Installation Guide for Nortel Meridian 2

InternationalInternational

Meridian 1

International ISDN PRI Installation

Document Number: 553-2901-201Document Release: 5.0Date: June 1999

Year Publish FCC TM

© 1991, 1999All rights reserved

Printed in the United States of America

Information is subject to change without notice. Nortel Networks Corporation reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules, and the radio interference regulations of Industry Canada. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense.

Meridian 1 is a trademark of Nortel Networks Corporation.


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Revision historyJune 1999

Issue 5.00 released as Standard for Generic X11 Release 24.2x.

October 1997Issue 4.00 released as Standard for Generic X11 Release 23.

December 1995Issue 3.00 released as Standard for Generic X11 Release 21B.

August 1995Issue 2.00 released as Standard for Generic X11 Release 21A.

August 1994Issue 1.00 released as Standard for Generic X11 Release 20.

August 1993This document is the standard release for Phase 8b.

October 1992This document is the standard release for Phase 7C.

June 1992This publication is the standard release for Phase 7B.


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Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Document overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note to installers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ISDN Primary Rate Interface equipment overview 7Primary Rate Interface (PRI) hardware . . . . . . . . . . . . . . . . . . . . . . . .

ISDN Signaling Link (ISL) hardware . . . . . . . . . . . . . . . . . . . . . . . 64 Kb/s Clear Data Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the Hayes Smartmodem 2400 for ISL applications . . . . .

NT6D11AB, NT6D11AE, and NT6D11AF DCHI . . . . . . . . . . . . . . . 1Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DCHI/PRI interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NT6D11AB, NT6D11AE/AF, and NT6D11AF faceplates . . . . . . 1

NT6D80 MSDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MSDL/PRI interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MSDL faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NT8D72AB and NT8D72BA PRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NT8D72AB and NT8D72BA faceplate . . . . . . . . . . . . . . . . . . . . . Cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Carrier interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . QMT21 High Speed Data Module . . . . . . . . . . . . . . . . . . . . . . . . .

QPC720 PRI for 1.5/2.0 Mb/s gateway . . . . . . . . . . . . . . . . . . . . . . . .


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Clock operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tracking mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Free run (non-tracking) mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference clock errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic clock recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic clock switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disk drive hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTCK43 Dual-port PRI2 and NT5D97 Dual-port DTI2/PRI2 card description . . . . . . . . . . . . . . . . . . 29NTCK 43 Dual-port PRI2 card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTCK43 product compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . NTCK43 faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTCK43 external connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTCK43 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware required for NTCK43 DPRI configuration . . . . . . . . . . Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTCK43 DPRI carrier interface . . . . . . . . . . . . . . . . . . . . . . . . . . . Clocking for the NTCK43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTBK51AA DDCH and the NTCK43 . . . . . . . . . . . . . . . . . . . . . . 5

NT5D97 Dual-port DTI2/PRI2 card . . . . . . . . . . . . . . . . . . . . . . . . . . Supported functionalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supported systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supported software releases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External D-Channel Interface (DCHI or MSDL) . . . . . . . . . . . . . . On-board NTBK51AA D-Channel Handler Daughterboard . . . . . DDP2 faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . System capacity and performance . . . . . . . . . . . . . . . . . . . . . . . . . . Testability and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware required for DDP2 configuration . . . . . . . . . . . . . . . . . . Cabling requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cabling diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clocking for the NT5D97 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DCHI installation for all systems . . . . . . . . . . . . . . 91Installing the NT6D11AB, NT6D11AE, NT6D11AF DCHI . . . . . . . 9

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Setting up the NT6D11AB, NT6D11AE, NT6D11AF DCHI . . . . . . . 9DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protocol selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valid switch combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Port addressing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Port address switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the NT6D11AB, NT6D11AE, NT6D11AF DCHI . . . . . . . 10

NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97 . . . . . . . . . . . . . . . . . . . . . . . . 103Installing the NTBK51 DDCH for the NTCK43 Dual-port PRI2 card 10

Removing the NTBK51 DDCH for the NTCK43 Dual-port PRI2 card 10

Installing the NTBK51 DDCH for the NT5D97 Dual-port DRI2/PRI2 card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the NTBK51 DDCH for the NT5D97 Dual-port DRI2/PRI2 card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MSDL installation for all systems . . . . . . . . . . . . . 109Installing the MSDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PRI and clock controller installation: 21/21E and ST/STE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113PRI circuit pack locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the NT8D72AB, NT8D72BA PRI . . . . . . . . . . . . . . . . . . . . 1

Installing or replacing the QPC775 clock controller . . . . . . . . . . . . . .

Removing the NT8D72AB, NT8D72BA PRI . . . . . . . . . . . . . . . . . . . 1

PRI and clock controller installation: 51/51C, 61/61C and NT . . . . . . . . . . . . . . . . . . . . . . 125PRI circuit pack locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


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Switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the NT8D72AA, NT8D72AB, NT8D72BA PRI . . . . . . . . . 13

Installing or replacing the Clock Controller: half-group . . . . . . . . . . . 1

Installing the Clock Controller in the 51/51C, 61/61C, NT: single-group . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the NT8D72AB, NT8D72BA PRI . . . . . . . . . . . . . . . . . . . 1

Installing an additional Network shelf . . . . . . . . . . . . . . . . . . . . . . . . .

PRI and clock controller installation: 71 and XT . 145PRI circuit pack locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dip switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the NT8D72AA/AB, NT8D72BA PRI . . . . . . . . . . . . . . . . 15

Removing the NT8D72AA/AB, NT8D72BA PRI . . . . . . . . . . . . . . . 15

Installing the Clock Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PRI and clock controller installation: 81/81C . . . . 159PRI circuit card locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the NT8D72AB, NT8D72BA PRI . . . . . . . . . . . . . . . . . . . . 1

Installing the Clock Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the Clock Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTCK43 Dual-port PRI2 installation and removal 171Setting up the NTCK43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTCK43 circuit pack locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1NTCK43 switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the NTCK43 DPRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

NT5D97 Dual-port DTI2/PRI2 installation and removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179DDP2 circuit card locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Port definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement of a digital trunk (NT8D72BA/QPC536E) by a DDP2 card,case scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DDP2 switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trunk interface switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ring ground switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . On board DDCH address select switches . . . . . . . . . . . . . . . . . . . .

Installing the NT5D97 DDP2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the NT5D97 DDP2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuring the NT5D97 DDP2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ISL installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193ISL configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DCHI switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MSDL switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shared mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dedicated mode using leased line . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dedicated mode using dial-up modem . . . . . . . . . . . . . . . . . . . . . . . . .

Dedicated mode using DTI2 trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . QMT11 switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . QMT8 switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . QMT21C switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ISL installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ISL dedicated mode (digital and analog) . . . . . . . . . . . . . . . . . . . . . ISL shared mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Echo canceller installation . . . . . . . . . . . . . . . . . . . 209Echo canceller operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . .

Echo canceller initialization procedures . . . . . . . . . . . . . . . . . . . . . . .

PRI to Echo canceller pin assignments . . . . . . . . . . . . . . . . . . . . . . . .

Non-standard cables . . . . . . . . . . . . . . . . . . . . . . . . 213NT5K40AA, NT5K41AA, NT5K86AA . . . . . . . . . . . . . . . . . . . . . . . 21


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NT8D7206, NT8D7207 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

QCAD128 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

QCAD129 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

QCAD133 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NT8D7205 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

QCAD328 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTND26 PRI to MSDL cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTND27 MSDL to I/O panel cables . . . . . . . . . . . . . . . . . . . . . . . . . .

NTND98 PRI to I/O panel cables . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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List of figuresFigure 1PRI hardware (shown without downloadable PRI and DCH cards) . .

Figure 2ISL dedicated mode: using dial-up Hayes Smartmodem 2400 . . . . . .

Figure 3NT6D11 DCHI faceplate layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4NT6D80 MSDL faceplate layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 5NT8D72AB and NT8D72BA PRI faceplate layout . . . . . . . . . . . . . . .

Figure 6Clock controller primary and secondary tracking . . . . . . . . . . . . . . . .

Figure 7NTCK43 DPRI faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 8Carrier Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 9Clock controller, primary and secondary tracking . . . . . . . . . . . . . . . .

Figure 10CC Option 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 11CC Option 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 12CC Option 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


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Figure 13CC Option 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 14NT5D97AA faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 15NTCK45AA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 16NT8D7217 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 17NTCK78AA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 18NTCK79AA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 19NTCG03AA/AB/AC/AD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 20NTCK46AA/AB/AC/AD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 21NTCK80AA/AB/AC/AD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 22DDP2 cabling for Meridian 1 and Meridian SL-1 systems with an I/O pan79

Figure 23DDP2 cabling for Meridian 1 and Meridian SL-1 systems without an I/O panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 24Clock Controller primary and secondary tracking . . . . . . . . . . . . . . . .

Figure 25Clock Controller - Option 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



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Figure 29NT6D11 DIP switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 30NT6D11 DCHI with ISL high-speed programming jumper settings . .

Figure 31NT6D11 DCHI with ISL low-speed programming jumper settings . .

Figure 32MSDL card layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3321/21E and SL-1 ST/STE cabling without echo canceller . . . . . . . . . .

Figure 34ST, STE, 21, 21E cabling with echo canceller . . . . . . . . . . . . . . . . . . .

Figure 35NT8D72AA, NT8D72AB, and NT8D72BA . . . . . . . . . . . . . . . . . . . . 11

Figure 36Half-group cabling for the 51/51C, 61/61C and NT, without echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 37Half group cabling for the 51/51C, 61/61C and NT, with echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 38Single-group cabling for the 51/51C, 61/61C and NT, without echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 39Single group cabling for the 51/51C, 61/61C and NT, with echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 40NT8D72AA, NT8D72AB, NT8D72BA PRI dip switch settings for the 51/51C, 61/61C and NT . . . . . . . . . . . . . . . . . . . . . . .

Figure 4171, XT cabling without echo canceller . . . . . . . . . . . . . . . . . . . . . . . . .


of 222 List of figures

148

150

160

161

164

172

187

188

194

195

196

197

198

200


Figure 4271, XT cabling with echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 43NT8D72AA, NT8D72AB, NT8D72BA PRI dip switch settings for the 71 and XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 44Option 81/81C cabling without echo canceller . . . . . . . . . . . . . . . . . .

Figure 4581/81C cabling with echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 46NT8D72AA, NT8D72AB, NT8D72BA PRI dip switch settings for the 81/81C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 47NTCK43 switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 48Switch functional areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 49Switch default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 50NT6D11AB, NT6D11AD DCHI with ISL high-speed programming jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 51NT6D11AB, NT6D11AD DCHI with ISL low-speed programming jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 52MSDL/ISL settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 53ISL in shared mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 54ISL dedicated mode, using leased line . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 55ISL dedicated mode, using dial-up Hayes Smartmodem 2400 . . . . . .

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203

211


Figure 56ISL dedicated mode: using PRI/DTI trunk . . . . . . . . . . . . . . . . . . . . .

Figure 57PRI to echo canceller cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


of 222

20

13

14

19

21

27

32

33

46

47

55

56

60


List of tablesTable 1Active and stored profiles of the autodial or originating modem . . . .

Table 2Active and stored profiles of the auto answer or terminating modem .

Table 3NT8D72AB and NT8D72BA PRI: External connectors . . . . . . . . . .

Table 4NT8D72AB and NT8D72BA PRI: Cables and cable lengths . . . . . . .

Table 53.5 inch disk hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 6NTCK43 DPRI: External connectors . . . . . . . . . . . . . . . . . . . . . . . . .

Table 7NTCK43 DPRI LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 8Clock Controller Options for the NTCK43 - Summary . . . . . . . . . . . .

Table 9Clock Controller Options for the NTCK43 - Descriptions . . . . . . . . .

Table 10Supported software releases on the NT5D97 . . . . . . . . . . . . . . . . . . . .

Table 11DCHI/MSDL Receiver Ready control signals . . . . . . . . . . . . . . . . . . .

Table 12External connectors and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


of 222 List of tables

64

68

70

72

74

85

86

93

94

95

98

98

99

111

117


Table 13NT5D97 DDP2 power requirements . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 14NTCK45AA cable pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 15NT8D7217 cable pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Table 18Clock Controller options- summary . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 19Clock Controller options - description . . . . . . . . . . . . . . . . . . . . . . . . .

Table 20Protocol selection switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 21Port 0 settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 22Port 1 settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 23Port 0 mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 24Port 1 mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 25Port address switch settings for ISDN . . . . . . . . . . . . . . . . . . . . . . . . .

Table 26MSDL switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 27PRA Cabling for 21/21E and ST/STE . . . . . . . . . . . . . . . . . . . . . . . . .

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119

131

134

149

151

162

165

173

173

175

176

176

182

183


Table 28NT8D72AB, NT8D72BA PRI transmission equalization switch settings for 21, 21E, ST, STE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 29Cabling for the 51/51C, 61/61C and NT . . . . . . . . . . . . . . . . . . . . . . .

Table 30NT8D72AA, NT8D72AB, NT8D72BA PRI transmission equalization switch settings for the 51/51C, 61/61C and NT . . . . . . . . . . . . . . . . . .

Table 31Cable connections and destinations for 71, XT . . . . . . . . . . . . . . . . . .

Table 32NT8D72AA/AB, NT8D72BA PRI transmission equalization switch settings for the 71 and XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 33Cable connections and destinations for 81/81C . . . . . . . . . . . . . . . . . .

Table 34NT8D72AA/AB, NT8D72BA PRI transmission equalization switch settings, 81/81C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 35Faceplate switch setting - S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 36Clock Controller settings - S2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 37Summary of on-board DDCH switch functions - S3 . . . . . . . . . . . . . .



Table 40Impedance level and loop mode switch settings . . . . . . . . . . . . . . . . .

Table 41Impedance level and loop mode switch settings . . . . . . . . . . . . . . . . .


of 222 List of tables

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184

184

185

186

201

210

215

217

218

219

220

221


Table 42Trunk interface line build out switch settings . . . . . . . . . . . . . . . . . . .

Table 43Trunk interface receiver impedance switch settings . . . . . . . . . . . . . .

Table 44Ring ground switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 45DCH mode and address select switch settings . . . . . . . . . . . . . . . . . . .

Table 46NTBK51AA daughterboard address select switch settings . . . . . . . . .

Table 47Pin assignment for D-channel RS-232 interface . . . . . . . . . . . . . . . . .

Table 48PRI-to-Echo canceller – pin assignments . . . . . . . . . . . . . . . . . . . . . .

Table 49NT5K40AA, NT5K41AA, NT5K86AA wire list . . . . . . . . . . . . . . . . 214

Table 50NT8D7206, NT8D7207 wire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 51QCAD128 wire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Table 54NT8D7205 wire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


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IntroductionDocument overview

This document gives the procedures to install, replace, or remove PrimaRate Interface (PRI) circuit cards, D-channel Interface (DCHI) cards, CloController cards, and ISDN Signaling Link (ISL) equipment. The documeis organized as follows:

PRI equipment—overview:

— NT6D11AB/AE/AF DCHIs

— NTBK51 Downloadable D-Channel Daughterboard (for Meridian 1 Options 51 to 81 and SL-1 'N' and 'T)

— NT6D80 Multi-purpose Serial Data Link (MSDL)

— NTCK43 dual port PRI (DPRI) card (for Meridian 1 Options 51 to 81and SL-1 'N' and 'T)

— NT8D72AA/AB PRI, NT8D72BA PRI

Note: For use on the Meridian 1 system Option 81/81C, and for EuroISDN applications, vintage NT8D72BA is required.

Note: One or more QPC720 (1.5 Mb/s) Primary Rate Access circuitcards will be needed on Meridian 1 systems which are being used a1.5/2.0 Mb/s Gateway. Refer to ISDN Primary Rate Installation 553-2901-200 for information on the QPC720 PRI card.

— QPC775 Clock Controllers


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Note: For EuroISDN applications, and for use on the Meridian 1 systOption 81 in international markets, vintage QPC77E is required.

The QPC775 Clock Controller card currently is not compatible with Stratum 3 clocking in the U.S.A. Therefore, it is available for only thCanadian and International markets.

DCHI installation:All Meridian 1 Options (except Option 11) and SL-1 systems

Installing the NT6D11AB/AE/AF DCHI

Removing the QPC757C, NT6D11AB/AE/AF DCHI

MSDL installationAll Meridian 1 Options (except Option 11)

Installing the NT6D80 MSDL

Removing the NT6D80 MSDL

PRI installation (not including the NTCK43 and NT5D97 Dual-port cards):Meridian 1 Option 21/21E and SL-1 systems ST/STE

Installing the QPC720B/C, NT8D72AB and NT8D72BA PRI

Installing the QPC471, QPC775 Clock Controller

Removing the QPC720B/C, NT8D72AB and NT8D72BA PRI

Meridian 1 Options 51, 51C, 61, 61C and SL-1 system NT


Installing the QPC471, QPC775 Clock Controller: half-group

Replacing the QPC471, QPC775 Clock Controller: half-group

Installing the QPC471, QPC775 Clock Controller: single-group

Replacing the QPC471, QPC775 Clock Controller: single-group

Removing the NT8D72AB and NT8D72BA PRI

Installing an additional Network shelf

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Introduction Page 3 of 222


Meridian 1 Option 71 and SL-1 system XT


Installing the QPC471, QPC775 Clock Controller

Replacing the QPC471, QPC775 Clock Controller


Meridian 1 Option 81/81C


Installing the QQPC471, PC775 Clock Controller

Replacing the QPC471, QPC775 Clock Controller


NTCK43 Dual-port PRI2 installation (for Meridian 1 Options 51 to 81C and SL-1 'N' and 'T)

NT5D97 Dual-port DTI2/PRI2 installation (for Meridian 1 Options 51 to 81C and SL-1 'N' and 'T)

ISL installation:All Meridian 1 Options (except Option 11) and SL-1 systems

ISL configurations

DCHI switch settings

Shared mode

Dedicated mode using leased line

Dedicated mode using dial-up modem

Dedicated mode using DTI2 trunk


of 222 Introduction


Echo canceller installation:All Meridian 1 Options (except Option 11) and SL-1 systems

PRI-to-Echo canceller pin assignments

Echo canceller operating parameters

Echo canceller initialization settings

Cables:Information to build SL-1 cables of nonstandard lengths for PRI interfaceapplications.

Note: The Pulsed E&M DTI2 signalling for France and Indonesia feature requires special firmware which is provided on these cards:

• QPC915C PEAM (France)

• QPC536E PEAM (Indonesia)

For installation information on these cards, refer to NTP 2Mb/s DTI Installation for Generic X11 with Supplementary Features, (553-2911-200)

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Introduction Page 5 of 222


ReferencesRefer to the following documents for additional information.

ISDN PRI documents:

International ISDN PRI Product and features overview 553-2901-101

International ISDN PRI Feature description and administration 553-2901-301

International PRI Maintenance 553-2901-501

Meridian 1 documents:

X11 Features and Services 553-3001-306

Basic and Network Alternate Route Selection General Description 553-2751-100

Electronic Switched Network General Description 309-3001-100

2-Mb/s Digital Trunk Interface Feature Description 553-2911-100

2-Mb/s Digital Trunk Interface Installation 553-2911-200

2-Mb/s Digital Trunk Interface General Maintenance 553-2911-500

2Mb/s Digital Trunk Interface Fault Clearing Procedures 553-2911-510

MSDL Description 553-3001-195


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Meridian 1 Option 11 documents:

Option 11 Technical Reference Guide 553-3011-100

Option 11 General Installation and Planning Guide 553-3011-200

Option 11 Installation Guide 553-3011-210

Option 11 Administration Guide 553-3011-300

Option 11 2.0 MBit/s DTI/PRI Administration and Maintenance Guide 553-3011-315

Option 11 Fault Clearing 553-3011-500

Note to installersBefore beginning an installation, do the following:

— Consult the Spares Planning Guide (553-3001-153) document and follow the instructions.

— Bring spares of all cables and boards.

— Remember that test procedures require a 24-hour minimum bit error-testing before being used. See the International ISDN PRI Feature description and administration (553-2901-301) document for these tesprocedures.

Option 11 systemsThe installation of Meridian 1 Option 11 is not detailed in this installationguide. For information regarding the installation of an Option 11 systemrefer to the Meridian 1 Option 11 Installation Guide (553-3011-210).

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ISDN Primar y Rate Interface equipment overviewPrimar y Rate Interface (PRI) hardware

This publication describes the equipment and procedures needed to instafollowing ISDN PRI hardware on Meridian 1 system Options 21/21E, 51/51C, 61/61C, 71, 81/81C and Meridian SL-1 systems ST/STE, NT, anXT:

— NT6D11AB, NT6D11AE/AF D-Channel Interface (DCHI) card

— NT6D80 Multipurpose Serial Data Link (MSDL) card

— Downloadable D-Channel Daughterboard (DDCH) NTBK51 (for Meridian 1 Options 51 to 81C and SL-1 N and T)

— NT8D72AB, NT8D72BA PRI card

— NTCK43 dual-port PRI2 card (supported on Meridian 1 Options 51/5161/61C, 71, 81/81C and Meridian SL-1 systems N and T)

— NT5D97 dual-port DTI2/PRI2 card (supported on Meridian 1 Options21/21E, 51/51C, 61/61C, 71, and 81/81C, and Meridian SL-1 systemSTE, RT, XT, and NT)

— QPC775 Clock Controller

Note: Information pertaining to the NTCK43 DPRI card, the NT5D97DDP2 card, and the DDCH NTBK51 DDCH is documented in the section “NTCK43 Dual-port PRI2 and NT5D97 Dual-port DTI2/PRI2card description” beginning on page 29.


of 222 ISDN Primary Rate Interface equipment overview

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Additional hardware is also required for PRI capability and applications. Installation instructions are given in other Practices or supplied by the manufacturer. This additional hardware includes:

— QPC414 Network card

— Channel Service Unit (CSU)

— Echo canceller

— ROM circuit card requirements:

option ST QPC717D for Group E softwareQPC7940A for Group F software

option NT QPC602 for Group E softwareQPC939A for Group F software

option XT QPC602 for Group E softwareQPC939A for Group F software

option 21/21E QPC7940A

option 51/51C QPC939A

option 61/61C QPC939A

option 71 QPC938A or QPC939A

option 81/81C ROM requirements are fulfilled by the NT6D66 CaProcessor (CP) card.

— QMT8 Asynchronous Data Module (ADM)

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ISDN Primary Rate Interface equipment overview Page 9 of 222


Figure 1PRI hardware (shown without downloadable PRI and DCH cards)

PRI

PRI

PRI PRI

PRI

553-7332

DCHI

DCHI

CEPT

Loop

PRI

ClockControllers

QPC414Network

Card

Interface to the external digital carrier (2Mb/s PCM carrier)



y

rce de


ISDN Signaling Link (ISL) hardwareThe following hardware is required for ISDN Signaling Link (ISL) capabilitand applications.

Equipment required for shared mode capability:

— NT6D11AB or NT6D11AE/AF DCHI or Downloadable D-Channel Daughterboard (DDCH) NTBK51 (for Meridian 1 Options 51/51C, 61/61C, 71, 81/81C and SL-1 N and T)

— NT6D80 MSDL (as an alternative to DCHI)

— NT8D72AB or NT8D72BA PRI, or

— NTCK43 dual-port PRI2, or the NT5D97 dual-port DTI2/PRI2 card

— QPC775 Clock Controller

Equipment required for dedicated mode using leased lines:



— 2400-baud modem set in synchronous mode

Equipment required for dedicated mode using a dial-up modem:



— 2400-baud modem with auto-dial capability

Note: This configuration is the least reliable due to lockup problemsinherent in Smart Modems from power spikes and noisy lines. To increase the reliability on this configuration, use a constant power souwhen powering the modems. Also, verify that TIE lines meet data graspecifications. Northern Telecom takes no responsibility for ISL D-Channel outages due to modem lockup.

553-2901-201 Standard 5.0 June 1999


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SL-1


The following modems or equivalent are recommended:

— Hayes Smartmodem 2400 (see the following pages for informaton how to install the Hayes Smartmodem 2400)

— Concord Data System CDS 224 Trispeed Series II

— Anderson Jacobson AJ 2441-1 or Racal-Vadic 2400 PA

— 500 set line card

— QPC71 2W Tie, or QPC237 4W Tie E&M

Equipment required for dedicated mode using a DTI2 trunk:



— QMT8 Asynchronous Data Module (ADM), QMT11 Asynchronous/Synchronous Interface Module (ASIM) or QMT21 High Speed Data Module (HSDM)

— Data line card

— NT8D72AB or NT8D72BA PRI, or

— NTCK43 dual-port PRI2, or the NT5D97 dual-port DTI2/PRI2 card

64 Kb/s Clear Data HardwareThe QMT21 High Speed Data Module (HSDM) is required in the clear-dpathway to support the 64Kb/s clear-data function. One module is requireeach SL-1 end of any connection.

Installing the Hayes Smartmodem 2400 for ISL applicationsThe software and hardware of the Hayes Smartmodem 2400 must be instsequentially. The Hayes Smartmodem 2400 software must be defined bethe hardware connection between the Hayes Smartmodem 2400 and thecan be made. Within the software installation, either the auto-dial or the auto-answer software can be set up first. Figure 2 shows the hardware configuration between two SL-1s and their corresponding Hayes Smartmodem 2400s.



are s of nd yes

rs


Figure 2ISL dedicated mode: using dial-up Hayes Smartmodem 2400

Examples of parameters used for actual auto-answer and auto-dial sitesshown in the following tables. Table 1 shows the active and stored profilethe auto-dial site (or the originating modem). Table 3 shows the active astored profiles of the auto-answer site (or the terminating modem). The HaSmartmodem 2400 User's Guide contains explanations of the parameteused in Table 1 and Table 2.

PRIPRI

PRI

PRI

PRI

PRI

553-7333

Meridian 1Meridian 1

ISL D-channel

Modem Modem QCAD42QCAD42

Twisted pairTwisted pair

DCHI

500 setcard

TIE

DCHI

TIE

500 setcard

Originatorautodial

Terminatorautoanswer

553-2901-201 Standard 5.0 June 1999


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After the software parameters have been set up, the JP1 jumpers behinfront faceplate of the Hayes Smartmodem 2400 must be dumb strappedboth modems. Then see the Hayes Smartmodem 2400 Getting Started Gto set up the hardware between the SL-1 and the modem.

Table 1Active and stored profiles of the autodial or originating modem

Active profile:

B1 E0 L2 M1 Q1 V1 X4 Y0 &C1 &D0 &G0 &J0 &L0 &P0 &Q2 &R0 &S0 &X0 &Y0S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:030S08:002 S09:006 S10:014 S12:050 S14:ACH S16:00H S18:000 S21:20HS22:76H S23:15H S25:005 S26:001 S27:42H

Stored profile 0:

B1 E0 L2 M1 Q1 V1 X4 Y0 &C1 &D0 &G0 &J0 &L0 &P0 &Q2 &R0 &S0 &X0S00:000 S14:ACH S18:000 S21:20H S22:76H S23:17H S25:005 S26:001S27:42H

Stored profile 1:

B1 E1 L2 M1 Q0 V1 X4 Y0 &C0 &D0 &G0 &J0 &L0 &P0 &Q0 &R0 &S0 &X0S00:00 S14:AAH S18:000 S21:00H S22:76H S23:17H S25:005 S26:001S27:40H

Telephone numbers:

&Z0=ATDT7414011&Z1=&Z2=&Z3=




Table 2Active and stored profiles of the auto answer or terminating modem

Active profile:

B1 E0 L2 M1 Q1 V1 X4 Y0 &C1 &D2 &G0 &J0 &L0 &P0 &Q1 &R0 &S1 &X2 &Y0S00:001 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:030S08:002 S09:006 S10:014 S12:050 S14:ACH S16:00H S18:000 S21:70HS22:76H S23:15H S25:005 S26:001 S27:61H

Stored profile 0:

B1 E0 L2 M1 Q1 V1 X4 Y0 &C1 &D2 &G0 &J0 &L0 &P0 &Q1 &R0 &S1 &X2S00:001 S14:ACH S18:000 S21:70H S22:76H S23:17H S25:005 S26:001S27:61H

Stored profile 1:

B1 E1 L2 M1 Q0 V1 X4 Y0 &C0 &D0 &G0 &J0 &L0 &P0 &Q0 &R0 &S0 &X0S00:000 S14:AAH S18:000 S21:00H S22:76H S23:17H S25:005 S26:001S27:40H

Telephone numbers:

&Z0=&Z1=&Z2=&Z3=

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NT6D11AB, NT6D11AE, and NT6D11AF DCHIPower requirements

The power requirements for the QPC757C DCHI are:

+5 volts at 3 amperes

+12 volts at 50 milliamperes

-12 volts at 50 milliamperes

The power requirements for the NT6D11AB/11AE/AF DCHI are:




DCHI/PRI interfaceThe NT6D11AB/AE/AF DCHIs connect to the NT8D72AB and NT8D72BAPRI by means of the QCAD328A, which is a special RS422 cable; refer to"Non-standard cables" section of this document for more details.

NT6D11AB, NT6D11AE/AF, and NT6D11AF faceplatesNT6D11AB/AE/AF DCHIs have one light-emitting-diode (LED), to indicatan active or inactive state, and two external connectors:

1 Port J1 is a standard asynchronous port providing an interface for non-PRI applications.

Note: This connection will not support an Add-on Data Module (ADMterminal.

2 Port J2 is the D-Channel Interface port.

Figure 3 shows the faceplate layout.




Figure 3NT6D11 DCHI faceplate layout

553-7334

J2

J1

Status LEDThe DCHI LED indicates the statusof both ports on the DCHI card. If both ports are configured, the LED is lit only when both ports are disabled.

Asynchronous portThis port is used for non-PRA applications. Port J1 is always an even number(0, 2, 4, ...14).

D-channel interfaceThis port is connected to port J5 ona PRI card. The D-channel is always channel 16 on a PRI2.Port J2 is always an odd number(1, 3, 5...15).

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NT6D80 MSDLThe NT6D80 MSDL card can be used in all Meridian 1 and SL-1 systemsupporting X11 release 18 Level H software. It can be used in conjunctwith, or independently from, the QPC757C, or NT6D11AB/AE/AF DCHI.

Power requirementsThe NT6D80 MSDL power requirements are:

MSDL/PRI interfaceMSDL can connect to PRI trunks through RS-422 or RS-232 interfaces. interfaces are switch configured.

MSDL faceplateThe NT6D80 MSDL has one light-emitting-diode (LED) to indicate an actior inactive state and four external connectors. Each port can be RS-422RS-232 connectors, with either DCE or DTE interfaces. Refer to Figure

Voltage(VAC)

Current(Amps)

Power(Watts)

Heat(BTUs)

+5+12-12

3.200.100.10

16.001.201.20

55.36 4.15 4.15




Figure 4NT6D80 MSDL faceplate layout

0 9 8 7654

321

0 9 8 7654

321

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

Ones

DCELED

Port 0

Port 1

Port 2

Port 3

MonitorPort

DTE

S4 S8

Card Address Select SwitchesCare Locking Device

Tens

S9 S10

DCE DTE

S3 S7

DCE DTE

I/O Port InterfaceConfiguration DIP Switches

S2 S6

DCE DTE

S1 S5

553-5434

Setting for an RS-232 interface DTE/DCE are software configured

Setting for an RS-422 DTE interface

Setting for an RS-422 DCE interface

Setting for an RS-232 interface DTE/DCE are software configured

553-2901-201 Standard 5.0 June 1999


s

the


NT8D72AB and NT8D72BA PRI Power requirements

The NT8D72AB and NT8D72BA PRI use power and ground connectionfrom the backplane. Power requirements are:




NT8D72AB and NT8D72BA faceplateThe NT8D72AB and NT8D72BA PRI contain five LEDs and six externalconnectors. Figure 5 shows the faceplate layout.

Table 3 below gives information about the external connectors located onNT8D72AB and NT8D72BA PRI faceplate.

Table 3NT8D72AB and NT8D72BA PRI: External connectors

Faceplate Destination

Type Description

J1 9-pin female, D-connector Reference Clock 0 interface

J2 9-pin female, D-connector Reference Clock 1 interface

J3 36-pin connector Loop interface

J4 15-pin male, D-connector External digital trunk

J5 15-pin male, D-connector D-Channel interface

J6 15-pin female, D-connector Echo Canceller/RS-232 interface

RCV MON Miniature bantam jack Monitor DSI from network

XMT MON Miniature bantam jack Monitor DSI from PRI




Figure 5NT8D72AB and NT8D72BA PRI faceplate layout

J1

J3

J2 J4

J5

J6

RCV

XMT

553-7336

OOS: Card is out of service

ACT: Card is enabled

LOCAL: Local alarm - local card or transmission fault

RAI: Remote alarm - far end fault

LBK: Loop -back test - see PRI tests

RCV MON: Access point to regenerated CEPT signal fromthe external network

XMT MON: Access pont to CEPT signal being transmitted

J1 and J2: Buffered recovered clocks derived from externalcarrier facility (Ref 1 & 2)

J4: CEPT interface to the external digital carrier

J5: D-channel interface (DCHI) for common channel signaling

J3: Standard 18-pair connector to Core Switch Network Loop

J6: RS-232 interface to echo canceller (satellitetransmission only). Test port only.

553-2901-201 Standard 5.0 June 1999


and


Cable requirementsTable 4 lists the types of cable used and the lengths required for internalexternal NT8D72AB and NT8D72BA PRI connections.

Note: No additional cabling is required for nB+D configurations. Multiple PRIs and the D-Channel are associated through software inOverlay 17, prompt PRI.

Table 4NT8D72AB and NT8D72BA PRI: Cables and cable lengths

Cable Type From ToMaximum length (meters)

NT8D79AA PRI card Clock controller (CC-0) 2.13

NT8D79AA PRI card Clock controller (CC-1) 2.13

QCAD328A PRI card DCHI card 1.8

QCAD328B PRI card DCHI card 5.5

QCAD328C PRI card DCHI card 10.67

QCAD328D PRI card DCHI card 15.24

NTND26AA PRI card MSDL 1.8

NTND26AB PRI card MSDL 5.5

NTND26AC PRI card MSDL 10.67

NTND26AD PRI card MSDL 15.24

NT8D85AB PRI card Network Network Card 15.24

RS-232 PRI card Echo canceller 15.24

NT8D7207 PRI card I/O panel(system options 51/51C, 61/61C, 71, 81, XT, NT)

3.05

NT8D7206 PRI card I/O panel (system options 21/21E, ST)

1.25

NT8D7205 I/O panel crossconnect 15.24



cho

bs

re. .

, one be

ay a


Carrier interfaceThe NT8D72AB and NT8D72BA PRI provide an interface to the 2Mb/s external digital line either directly or through an office repeater, echo canceller or line terminating unit (LTU).

Echo canceller interfaceEcho cancellers are required only on satellite transmission circuits. The ecanceller detects the length of the loop, and then cancels out reflected transmission. (Callers will not hear echoes of their own voices reflectingback to them from the far end of the call.)

The echo canceller’s control protocol must conform with that of the TellaModel 251. Both the echo canceller and the PRI circuit card act as data terminal equipment (DTEs).

QMT21 High Speed Data ModuleThe QMT21 High Speed Data Module supports the 64K Clear Data featu(It allows data terminating equipment (DTE) to send and receive 64-Kb/sclear data.) The QMT21B is required for the SL-1 to SL-1 configurations

QPC720 PRI for 1.5/2.0 Mb/s gatewayOn Meridian 1 systems which are being used as a 1.5/2.0 Mb/s Gatewayor more QPC720 (1.5 Mb/s) Primary Rate Interface circuit cards will alsoneeded. Further information on the QPC720, refer to 553-2901-200.

Note: Older vintages of the QPC720 PRI can not be used for Gatewapplications. The 1.5/2.0 Mb/s Gateway feature requires the use of QPC720 circuit card with firmware updated to provide modified PADvalues.

553-2901-201 Standard 5.0 June 1999


de.

lock as as

k-up to

p to nce


Clock operationThere are two types of clock operation—tracking mode and free-run mo

Tracking modeIn tracking mode, the PRI loop supplies an external clock reference to a ccontroller. Two PRI loops can operate in tracking mode, with one definedthe primary reference source for clock synchronization, the other definedthe secondary reference source. The secondary reference acts as a bacthe primary reference.

As shown in the Figure 6, an SL-1 system with dual CPUs may have twoclock controllers (CC-0 and CC-1). One clock controller acts as a back-uthe other. The clock controllers should be completely locked to the refereclock.




Figure 6Clock controller primary and secondary tracking

553-1385

REF 1

REF 2

J1

J2

ClockController

1

secondary

secondary

primary

primary

PRIPRIMARYReference

PRISECONDARY

Reference

REF 1

REF 2

Clock Controllerback-up

J3

J2

J1

J3

J2

J1Clock

Controller0

J1

J2

553-2901-201 Standard 5.0 June 1999


eck

ich the

ver a

the

l led,

, it

k .


Free run (non-tracking) modeThe clock synchronization of the SL-1 may operate in free-run mode if:

— no loop is defined as the primary or secondary clock reference,

— the primary and secondary references are disabled, or

— the primary and secondary references are in local alarm

Reference clock errorsSL-1 software checks at intervals of 1 to 15 minutes to see if a clock -controller or reference-clock error has occurred. (The interval of this chcan be configured in Overlay 73.)

In tracking mode, at any one time, there is one active clock controller whis tracking on one reference clock. If a clock-controller error is detected, SL-1 switches to the back-up clock controller, without affecting which reference clock is being tracked.

A reference-clock error occurs when there is a problem with the clock drior with the reference clock at the far end. If the clock controller detects reference-clock error, the reference clocks are switched.

Automatic clock recoveryA command for automatic clock recovery can be selected in LD 60 with command EREF.

A PRI loop is disabled when it enters a local-alarm condition. If the locaalarm is cleared, the loop is enabled automatically. When the loop is enabclock tracking is restored in the following conditions:

1 If the loop is assigned as the primary reference clock but the clock controller is tracking on the secondary reference or in free-run modeis restored to tracking on primary.

2 If the loop is assigned as the secondary reference clock but the cloccontroller is in free-run mode, it is restored to tracking on secondary



red

or

or ner:

k, it C

ock,

, d to

disk


If the clock check indicates the switch is in free-run mode:

1 Tracking is restored to the primary reference clock if defined.

2 If the primary reference is disabled or in local alarm, tracking is restoto the secondary reference clock if defined.

Note: If the switch was put into free-run mode intentionally by the craftsperson, it will resume tracking on a reference clock unless the clock-switching option has been disabled (LD 60, command MREF),the reference clock has been "undefined" in the database.

Automatic clock switchingIf the EREF command is selected in Overlay 60, tracking on the primarysecondary reference clock is automatically switched in the following man

1 If software is unable to track on the assigned primary reference clocswitches to the secondary reference clock and sends appropriate DTmaintenance messages.

2 If software is unable to track on the assigned secondary reference clit switches to free run.

Disk drive hardwareThe following hardware is required for Meridian 1 system options 21/21E51/51C, 61/61C, 71, 81 and for SL-1 systems NT and XT being upgradeGroup F (Phase 6) software (or later issues of software):

— 3.5-inch disk drive unit

— disk drive controller for above

— cable for above

Group F software (or any later issue) on an ST does not require a 3.5-inchdrive. On this machine option, Group F software will function with the 5.25-inch disk drive.

See Table 5 for information on disk drive components.

553-2901-201 Standard 5.0 June 1999



Table 53.5 inch disk hardware requirements

Product Code Description

NT8D68AA Floppy Disk Unit (FDU)

NTUD69AA Mass Disk Unit (MDU)

QPC742D Floppy Disk Interface (FDI) for FDU

QPC584E Floppy Disk Interface (FDI) for MDU

NT8D77AB Mass Storage Unit (MSU) interface cable (2 ft, 0.6m)

NT8D77AA Mass Storage Unit (MSU) interface cable (3 ft, 0.9m)

NT8D77AC Mass Storage Unit (MSU) interface cable (4 ft, 1.2m)

NT8D77AD Mass Storage Unit (MSU) interface cable (5 ft, 1.5m)




553-2901-201 Standard 5.0 June 1999

of 222

90

rd N

e

se 6 t rd er m

ect re

o


NTCK43 Dual-port PRI2 and NT5D97 Dual-port DTI2/PRI2 card descriptionNTCK 43 Dual-port PRI2 card

The NTCK43 is a dual-port (two port) 2.0 Mbit Primary Rate Interface casupported on Meridian 1 Options 51/51C, 61/61C, 71, 81/81C and SL-1 and T series systems. It reduces the PRI footprint by integrating the functionalities of two NT8D72 PRI cards and one QPC414 ENET into oncard. The NTCK43 occupies a single Network shelf slot providing two primary rate network connections.

NTCK43 product compatibilityThe NTCK43 DPRI supports all the functionality of the NT8D72BA PRI2card, it is software independent and is compatible with Generic X81 Phaand later software where the Downloadable DDCH Daughterboard is norequired, and Generic X11 software Phase 8B or later where the on-boaDCCH may be configured as an alternative to the standard MSDL. EarliPRI cards may be mixed with the NTCK43 DPRI card on the same systetype, where necessary.

Due to cabling limitations it is not possible on a specific Dual PRI to connboth MSDL and non MSDL D-Channel handlers when external DCHIs abeing used. e.g. It is not possible to have an MSDL D-Channel handler connected to Unit 0 and a NT6D11 type D-Channel handler connected tUnit 1.


of 222 NTCK43 Dual-port PRI2 and NT5D97 Dual-port DTI2/PRI2 card description

s

k


NTCK43 faceplateThe NTCK43 DPRI contain a set of vertical LEDs for each PRI Loop pluone Led giving the DDCH status. The faceplate includes five external connectors of which three are used by the customer. These are the Trunconnection P1, the external DCHI connector P3 and the clock controller connector P4. Figure 7 shows the NTCK43 faceplate layout.

553-2901-201 Standard 5.0 June 1999

NTCK43 Dual-port PRI2 and NT5D97 Dual-port DTI2/PRI2 card description Page 31 of 222


Figure 7NTCK43 DPRI faceplate

NTCK43AANTCK43AA

Enb

DisFaceplate switch

LEDs

P1: Trunk Connector

P2: Trunk Monitor

P3: DCHI Connector

P4: Clock Connector

P5: Maintenance Connector

553-7338

P2

P3

DPR I

COSCOSACTACTLOCLOCRAIRAILBKLBKDISDISDCHDCH

P1P1TrkTrk

P2MonMon

P3DCHDCH

P4P4ClkClk

P5P5MaintMaint



43


NTCK43 external connectorsTable 6 gives information about the external connectors located on NTCKDPRI faceplate.

Table 6NTCK43 DPRI: External connectors

Faceplate Connector

Connector Type

Description

P1 9-pin female, D-connector

Dual External Trunk Connection

P2 9-pin female, DIN

Monitor Port


Dual DCHI interface


Clock Controller Port

P5 9-pin female, DIN

Maintenance Port

553-2901-201 Standard 5.0 June 1999


43


NTCK43 LEDsTable 7 gives information about the external connectors located on NTCKDPRI faceplate. A more detailed description of the LEDs follow.

Table 7NTCK43 DPRI LEDs

U0 U1 Abbr. Description

Red Red OOS Out of Service

Green Green ACT Active

Red Red RED Local Alarm

Yellow Yellow RAI Remote Alarm

Green Green LBK Loopback

Red Red DIS Loop Status(Off = Loop Enabled)(ON = Loop Disabled)

Multi-Coloured

DCH DDCH StatusOFF = No DDCH Daughterboard InstalledRed = DDCH DisabledFlashing Red = DDCH Download in ProgressGreen = DDCH Enabled



ice ate" r-up,

is ignal

el fied

op

ent


LED descri ptionsOOSThis red LED indicates that the particular PRI channel is in an Out-of-Servstate, having received either the "disable loop" or "enter Out-of-Service stmessage from software. This is also the state of both channels after powecompletion of self-test, and exiting remote loopback mode.

ACTThis green LED indicates that the channel is in the active state, having received the "enable loop" message from software.

REDThis red LED indicates that the channel is in the Local alarm state. Thisthe state when the channel has a local problem with the received CEPT ssuch as Loss of signal, Loss of Multi-frame Alignment, or Loss of FrameAlignment.

RAIThis yellow LED is turned on and off by firmware to indicate that the channhas received either a RAI or an AIS signal from the remote end and notisoftware that it has persisted but not yet cleared.

LBKThis green LED indicates that the channel is in one of the various per loloopback states.

DISThis red LED indicates that the Loop is disabled.

DCHThis dual colour red/green LED indicates that the on-board DDCH is pres(red) or is present and enabled (green).

553-2901-201 Standard 5.0 June 1999


n

e

em

e

s. or


Hardware required for NTCK43 DPRI configurationThe following hardware is required when configuring the NTCK43 DPRI oMeridian 1 Options 51 to 81 and SL-1 N and T series systems.

Note: Note: Either the DCHI card, the MSDL, or the DPRI card may binstalled first. However, DPRI loops must be configured in software before defining DCH links.

PRI— NTCK43 DPRI

DCHI— NT6D11 DCHI

or as an option to the DCHI

MSDL— NT6D80

or as an option to the DCHI or MSDL

Downloadable DCH— NTBK51

Clock Controllers— QPC775 Clock Controller(s)

Note: For EuroISDN applications, and for use on the Meridian 1 systOption 81 in international markets, vintage QPC77E is required.

The QPC775 Clock Controller card currently is not compatible with Stratum 3 clocking in the U.S.A. Therefore, it is available for only thCanadian and International markets.

Other hardwareAdditional hardware may also required for PRI capability and applicationInstallation instructions are given in other Northern Telecom publicationssupplied by the manufacturer. This additional hardware may include:

— one Channel Service Unit (CSU), or Line Terminating Unit (LTU)



rnal

in

that tate that


— one office repeater

— one QMT8 Asynchronous Data Module (ADM)

CablingThis section lists the types of cable used and the lengths required for inteand external NTCK43 DPRI connections.

Note: No additional cabling is required for nB+D configurations. Multiple DPRIs and the D-Channel are associated through softwareOverlay 17, prompt PRI2.

DPRI cablesThe various cables associated with the Dual PRI are given below. Note the D-Channel and Clock Controller cables have length variations to facilidifferent configurations. These cable length variations match the lengths are presently available for the NT8D72BA.

NTCK45AA120 Ohm Dual PRI to I/O Panel cable (8ft)

Note: This cable is not used for ST Machines.

Connector P2 supplies the PRI Trunk connection for Unit 0.


553-7339

P1P2

P3

553-2901-201 Standard 5.0 June 1999



NTCK78AA120 Ohm Dual PRI cable for ST Machines (50ft)

Note: This cable is used for ST Machines only.



NTCK79AA75 Ohm Dual PRI Coax Cable (40ft)

This cable is 75 Ohm Dual Coaxial cable which interfaces to P1 on the faceplate side and to external equipment such as an LIU.

553-7339

P1P2

P3

553-7340

P1

Unit 0 Tx (Red)

Unit 0 Rx (Green)

BCN Connectors

Unit 1 Tx (Red)

Unit 1 Rx (Green)




External DPRI cableNT8D7217Dual PRI I/O Panel to Multiplexer cable (50ft)

Note: This cable is not used for ST Machines.

External MSDL/DDCH D-Channel cablesNTCK80AADual PRI to MSDL DCHI cable (6ft)

NTCK80ABDual PRI to MSDL DCHI cable (18ft)

NTCK80ACDual PRI to MSDL DCHI cable (35ft)

NTCK80ADDual PRI to MSDL DCHI cable (50ft)

Connector P2 supplies the DCHI connections for Unit 0.

Connector P3 supplies the DCHI connections for Unit 1.

Clock Controller cables (1 to 2 port cables )NTCK47AADual PRI to Clock Controller cable (2ft)

553-7341

P1

NT8D7217 Cable

P2

553-7339

P1P2

P3

553-2901-201 Standard 5.0 June 1999


he

ual om a PRI


NTCK47ABDual PRI to Clock Controller cable (4ft)

NTCK47ACDual PRI to Clock Controller cable (6ft)

NTCK47ADDual PRI to Clock Controller cable (8ft)

NTCK47AEDual PRI to Clock Controller cable (10ft)

Cable NTCK47 is the clock control cable used for most configurations.TNTCK47 can be used for all clocking options that use a Single CPU.

It can also be used for all clocking options using a Dual CPU where a DPRI provides one of the references and the other reference is provided frdifferent source, that source being either a different Dual PRI, a NT8D72 or a DTI.

553-7339

P1P2

P3



oth

of the

over h rs


Clock Controller Cables (1 to 4 port cables )NTCK81AADual PRI to Clock Controller cable (2ft)

NTCK81ABDual PRI to Clock Controller cable (4ft)

NTCK81ACDual PRI to Clock Controller cable (6ft)

NTCK81ADDual PRI to Clock Controller cable (8ft)

NTCK81AEDual PRI to Clock Controller cable (10ft)

Cable NTCK81 is used only in the situation where 1 Dual PRI provides breferences to both CPUs, i.e.. where the Dual PRI is the sole source of clocking references for the system. If a system has other PRIs installed (DPRIs or NT8D72) other than the Dual PRI, it is recommended that onethe clocking references be taken from that other source. This will de-riskimpact of a Dual PRI card failure on the system.

Note: When the Dual PRI cabling is completed, any connector that remain unterminated should have a protective plastic sleeve placed the connector, to protect it from dust or from coming into contact witother voltages. An example of this might be when all of the connectoon the NTCK47 cable were not terminated.

553-7342

P1P3

P2

P4

P5NTCK81: 1 to 4 Port Cable

553-2901-201 Standard 5.0 June 1999


r


NTCK43 DPRI carrier interfaceThe NTCK43 DPRI provide an interface to the 2Mb/s external digital lineeither directly or through an office repeater, line terminating unit (LTU), oChannel Service Unit (CSU). This is depicted by Figure 8.

Figure 8Carrier Interface

NTCK43AANTCK43AA

Enb

Dis

P2

P3

DPR I

COSCOSACTACTLOCLOCRAIRAILBKLBKDISDISDCHDCH

P1P1TrkTrk

P2MonMon

P3DCHDCH

P4P4ClkClk

P5P5MaintMaint

553-7343

PRI Cable

DCHI Cable

CC Cable(s)

I/O Panel Multiplexer,LIU or otherequipment

NT8D7217

NT8D7217

DCHI (NT6D80 MSDL, orNT6D11 type DCHI card)

ClockControllers

P1

P2

P3

P4

P5Clock controllercabling,depends on the configuration used.

Switch

LEDs



e.

a ther ts as a

ave

the


Clocking for the NTCK43Clock o perationThere are two types of clock operation - tracking mode and free-run mod

Tracking modeIn tracking mode, the DPRI loop supplies an external clock reference to clock controller. Two DPRI loops can operate in tracking mode, with onedefined as the primary reference source for clock synchronization, the odefined as the secondary reference source. The secondary reference acback-up to the primary reference.

As shown in Figure 9, a Meridian 1 or SL-1 system with dual CPUs may htwo clock controllers (CC-0 and CC-1). One clock controller acts as a back-up to the other. The clock controllers should be completely locked toreference clock.

553-2901-201 Standard 5.0 June 1999



Figure 9Clock controller, primary and secondary tracking

553-7344

REF 1Primaryclockingsource

Secondaryclockingsource

REF 2

ClockController

1

secondary

secondary

primary

primary

PRIPRIMARYReference

PRISECONDARY

Reference

REF 1

REF 2

Clock Controllerback-up

J3

J2

J1

J3

J2

J1Clock

Controller0



e if:

his

ich the ut

iver a

ith

al led,

, it

k .


Free run (non-tracking) modeThe clock synchronization of the Meridian 1 may operate in free-run mod



— the primary and secondary references are in local alarm

Reference clock errorsMeridian 1 software checks at intervals of 1 to 15 minutes to see if a clock-controller or reference-clock error has occurred. (The interval of tcheck can be configured in Overlay 73.)

In tracking mode, at any one time, there is one active clock controller whis tracking on one reference clock. If a clock-controller error is detected,Meridian 1 or SL-1 system switches to the back-up clock controller, withoaffecting which reference clock is being tracked.

A reference-clock error occurs when there is a problem with the clock dror with the reference clock at the far end. If the clock controller detects reference-clock error, the reference clocks are switched.

Automatic clock recover yA command for automatic clock recovery can be selected in Overlay 60 wthe command EREF.

A DPRI loop is disabled when it enters a local-alarm condition. If the localarm is cleared, the loop is enabled automatically. When the loop is enabclock tracking is restored in the following conditions:

1 If the loop is assigned as the primary reference clock but the clock controller is tracking on the secondary reference or in free-run modeis restored to tracking on primary.

2 If the loop is assigned as the secondary reference clock but the cloccontroller is in free-run mode, it is restored to tracking on secondary

553-2901-201 Standard 5.0 June 1999


red

or

or ner:

k, it C

ock,

ive dary

such t J2)

rce its


If the clock check indicates the switch is in free-run mode:

1 Tracking is restored to the primary reference clock if defined.

2 If the primary reference is disabled or in local alarm, tracking is restoto the secondary reference clock if defined.

Note: If the switch was put into free-run mode intentionally by the craftsperson, it will resume tracking on a reference clock unless the clock-switching option has been disabled (LD 60, command MREF),the reference clock has been "undefined" in the database.

Automatic clock switchin gIf the EREF command is selected in Overlay 60, tracking on the primarysecondary reference clock is automatically switched in the following man

1 If software is unable to track on the assigned primary reference clocswitches to the secondary reference clock and sends appropriate DTmaintenance messages.

2 If software is unable to track on the assigned secondary reference clit switches to free run.

Clockin g confi gurationsThe following Clock Controller configurations are possible:

— a Single CPU System.

— a Dual CPU System.

A single CPU system has one Clock Controller card. This card can recereferences clocks from two sources referred to as the primary and seconsources. These two sources can originate from a PRI, DTI etc. PRI cardsas the NT8D72 are capable of supplying 2 references of the same clocksource. These are known as Ref1 (available at J1) and Ref2 (available aon the NT8D72.

The Dual PRI is capable of supplying two references from each clock soui.e. four references in total. Dual PRI can thus supply Ref1 and Ref2 fromPrimary and Ref1 and Ref2 from its Secondary.

There are two Clock Controller Cables, namely NTCK47 & NTCK81.




The following tables give full details of clocking options.

Table 8Clock Controller Options for the NTCK43 - Summary

CC Option S2-1 S2-2CPU Type

Cable Notes

Option 1 OFF OFF Single NTCK47 Ref from U0 on P2Ref from U1 on P3

Option 2 OFF ON Dual NTCK47 Ref 1 from U0 on P2Ref 2 from U0 on P3

Opt ion 3 ON OFF Dual NTCK47 Ref 1 from U1 on P2Ref 2 from U1 on P3

Option 4 ON ON Dual NTCK81 Ref 1 from U0 on P2Ref 2 from U0 on P3Ref 1 from U1 on P4Ref 2 from U1 on P5

553-2901-201 Standard 5.0 June 1999



Table 9Clock Controller Options for the NTCK43 - Descriptions

Clock Option Notes

Option 1 This option provides a single CPU system with 2 clock sources derived from the 2 units of the Dual PRI.Connector P2 provides a clock source from Unit 0.Connector P3 provides a clock source from Unit 1.Refer to Figure 10.

Option 2 This option provides a Dual CPU system with 2 references of a clock source derived from unit 0 of the DPRI.Connector P2 provides a Ref 1 clock source from Unit 0.Connector P3 provides a Ref 2 clock source from Unit 0.Refer to Figure 11.

Option 3 This option provides a Dual CPU system with 2 references of a clock source derived from unit 1 of the DPRI. Connector P2 provides a Ref 1 clock source from Unit 1.Connector P3 provides a Ref 2 clock source from Unit 1.Refer to Figure 12.

Option 4 This option provides a Dual CPU system with 2 references from each clock source derived from the DPRI. Connector P2 provides a Ref 1 clock source from Unit 0.Connector P3 provides a Ref 2 clock source from Unit 0.Connector P4 provides a Ref 1 clock source from Unit 1.Connector P5 provides a Ref 2 clock source from Unit 1.Refer to Figure 13.



s t


Figures 10 to 13 illustrate the various clocking configurations available, awell as the Clock Controller cables and Clock switch options that supporthese configurations.

Figure 10CC Option 1

553-7345

PrimaryReference

SecondaryReference

Dual PRI

Unit 0

Unit 1

P4 ofDual PRI

CC for CPU O

J1 Secondary

J2 Primary

NTCK47 Cable

Secondary Ref

Primary Ref

S2 Switch Setting: Option 1S2-1 S2-2OFF OFF(i.e., One references from each unit)

P2 Ref from Unit 0

P3 Ref from Unit 1

P1

553-2901-201 Standard 5.0 June 1999




553-7346

PrimaryReference

SecondaryReference

Dual PRI

Unit 0

Unit 1

NT8D72BA

P4 ofDual PRI

CC for CPU O

CC for CPU 1

J1 Secondary

J2 Primary

J1 Secondary

J2 Primary

NTCK47 Cable

Primary Ref 1

Primary Ref 2

NTCK47 Cable

Secondary Ref 1

NT8D79 Cable

Secondary Ref 2

NT8D79 Cable

S2 Switch Setting: Option 2S2-1 S2-2OFF ON(i.e., Both references from unit 0)

J1 Ref 1

J2 Ref 2

P2 Ref 1 from Unit 0


P1





553-7347

PrimaryReference

SecondaryReference

Dual PRI card

Unit 0

Unit 1

NT8D72BA

P4 ofDual PRI

CC for CPU O

CC for CPU 1

J1 Secondary

J2 Primary

J1 Secondary

J2 Primary

NTCK47 Cable

Secondary Ref 1

NT8D79 Cable

Secondary Ref 2

NT8D79 Cable

Primary Ref 2

NTCK47 Cable

Primary Ref 1

NTCK47 Cable



S2 Switch Setting: Option 3S2-1 S2-2ON OFF(i.e., Both references from unit 1)

P1

J1 Ref 1

J2 Ref 2

553-2901-201 Standard 5.0 June 1999




553-7348

PrimaryReference

SecondaryReference

Dual PRI

Unit 0

Unit 1

P4 ofDual PRI

CC for CPU O

CC for CPU 1

J1 Secondary

J2 Primary

J1 Secondary

J2 Primary

NTCK81 Cable

Secondary Ref 1

Primary Ref 1

Secondary Ref 2

Primary Ref 2

S2 Switch Setting: Option 4S2-1 S2-2ON ON(i.e., Both references fromboth units)

P1P3: Ref 2 from Unit 0

P2: Ref 1 from Unit 0





The for CH ,

0 .


NTBK51AA DDCH and the NTCK43An optional two port Downloadable D-Channel Daughterboard (DDCH, NTBK51AA) has been introduced to be used with the NTCK43 DPRI in configurations where an MSDL is used instead of an external DCHI card. NTBK51 DDCH daughterboard is a 2 port MSDL card supporting all thefeatures of the existing 4 port MSDL (NT6D80), and eliminating the needan external DCHI card and associated cables for MSDL applications. DDcan support a maximum of 32 (16*2) MSDL type D-Channels per systemunlike MSDL which can support a maximum of 64.

Note: Only one version, the NTBK51AA, can be used in with the NTCK43 card. The newer NTBK51BA version has only 30+30 pin connectors (instead of 40+30 pins in the AA version). The missing 1pins in the BA version prohibits usage of port 0 on the NTCK43 card

553-2901-201 Standard 5.0 June 1999


A D97

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NT5D97 Dual-port DTI2/PRI2 cardThe NT5D97 is a dual-port 2.0 Mbit DTI2/PRI2 card (the DDP2 firmwarefunctions in DTI2 or PRI2 mode, depending on DIP switch settings) integrating the functionality of two QPC536E DTI2 cards or two NT8D72BPRI2 cards, and one QPC414 ENET card, into a single CE card. The NT5occupies a single slot in the Network shelf, providing two DTI2/PRI2 network connections, an interface to an external D-Channel Handler (theNT6D11AF/NT5K75AA/NT5K35AA DCH card or the NT6D80 Multi-purpose Serial Data Link card), and an optional plug-on NTBK51ADownloadable D-Channel daughterboard (DDCH) with two DCH interfacports.

The NT5D97 DDP2 card may be mixed in the same machine with earlieDTI2 (QPC536E) cards or PRI2 (NT8D72BA) cards, and the NTCK43 dual-port PRI2 (DPRI) card.

The NT5D97 DDP2 card hardware design uses a B57 ASIC E1/T1 framThe carrier specifications comply with the ANSI TI.403 specification. TheNT5D97 provides an interface to the 2.048 Mbps external digital line eithdirectly or through an office repeater, Network Channel Terminating Equipment (NCTE), or Line Terminating Unit (LTU).

CAUTION

The NT5D97 DDP2 card is not designed to be directly connected to the Public Switched Network, or other exposed plant networks. Such a connection should only be done using anisolating-type networking terminating device that provides voltage surge protection, such asLine Terminating Unit (LTU), Network Channel Terminating Equipment (NCTE), or Network Termination 1 (NT1), as certified by your local, regional, or national safety agency and telecommunications authority.

Supported functionalitiesThe NT5D97 supports the following functionalities and capabilities:

— Supports configuration of any combination of the two PRI2/DTI2 loopon the pack. Both loops may configured as PRI2 or DTI2, or one of loops may be configured as DTI2 and the other as PRI2.



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2


— Interfaces to the M1 network bus, and performs switching between tnetwork bus and the two 2Mbit carriers (60 channels).

— Performs the Power Up selftest.

— Performs Signal Scan and Distribution (SSD). SSD is the generic nafor messages from the SL-1 CPU and Peripheral Equipment cards input/output messages.

— Supports the Continuity test, and Bypass operation.

— Supports the Time Switch Memory (TSM) test.

— Processes alarm conditions raised by the 2Mbit drivers.

— Performs the setting and controlling of Card Leds.

— Supports 32 Pads on a per channel basis, and A law to/from µ law conversions.

— Performs Loop/channel tests, Echo tests, Near-end tests, Far-end teand Loop-back tests.

— Controls the connection of the reference clock to the Clock Controlle

— Supports TS16 signalling, and ABCD bits (in DTI2 mode only).

— Performs the on-board Digit Outpulsing (without using the Tone andDigit Switch card) and the on-board Digit Collection, when operating

with the Meridian 1 software Releases X11 21 or later1 (in DTI2 mode only). The features are activated by setting the ‘CDTI2’ prompt in theOverlay 73 to ‘YES’ and defining the ‘DIPF’ Class Of Service for thedial pulse trunks on the DDP2 DTI2 loop (the QPC536E uses the Toand Digit Switch card for the Digit Outpulsing and does not support ton-board Digit Collection).

— Supports the Cyclic Redundancy Check 4 (CRC4) alarm mode (in DTmode only), if the ‘CDTI2’ prompt in the Overlay 73 is set to ‘YES’.

— Supports connection to the external D-Channel handling devices (DCMSDL card), and to the optional NTBK51AA Downloadable D-Channdaughterboard (DDCH) (in PRI2 mode only).

1. A patch is required for the earlier MSL-1 / Meridian 1 software releases to support the DDP2 operating in the DTI2 Dial Pulse register signalling. The patch is designed to send the digit outpulsing requests to the DDPpack instead of performing the outpulsing driven by the TDS card.

553-2901-201 Standard 5.0 June 1999


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— Supports flexible D-Channel timeslot assignment1 (in PRI2 mode only).

— Supports configuration of DPNSS1 loops2.

Supported systemsThe NT5D97 is supported on Meridian 1 Options 21/21E, 51/51C, 61/6171, and 81/81C, and Meridian SL-1 STE, RT, XT, and NT systems (the NT5D97 is not supported on the Option 11C).

Supported software releasesTable 10 shows the Generic X11 software releases that are supported oNT5D97.

Table 10Supported software releases on the NT5D97

Note: The MSDL and NTBK51AA DDCH are compatible with GenericX11 Release 18 and later software.

1. This functionality requires a software patch in order to inform the NT5D97 about the selected E1 timeslot number.2. The NTBK51AA DDCH does not support DPNSS1. For DPNSS1 configurations, an external D-Channel interface card is required.

Software Release

Trunk T ype & Si gnallin g

DTI2 Dial Pulse DTI2/DTMF

PRI2/DCHI

PRI2/MSDL

PRI2/DDCH

Outpulsin g Incomin g DIPF

Release 15F-17 Yes* Yes No Yes Yes No No

Release 18-20 Yes* Yes No Yes Yes Yes Yes

Release 21 and later

Yes Yes Yes Yes Yes Yes Yes

Legend:

Yes - Supported.

YES* - A Digit Outpulsing patch is required.

No - Not supported.

DIPF - On-board Digit Collection is performed by the DDP2 firmware.



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to

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External D-Channel Interface (DCHI or MSDL)The connection between the DDP2 card and the external DCHI or MSDvia a 26 pin female D type connector. The data signals conform to the electrical characteristics of the EIA standard RS-422.

Two control signals are used to communicate the D-Channel link status toDCHI or MSDL. These are:

• Receiver Ready (RR), originating at the DDP2 card, to indicate the DCHI or MSDL that the D-channel link is operational.

• Transmitter Ready (TR), originating at the DCHI or MSDL, to indicate to the DDP2 card that the DCHI or MSDL are ready to uthe D-Channel link.

Table 11 indicates how the RR control signal operates with regard to theDDP2 status.

Table 11DCHI/MSDL Receiver Ready control signals

RR State Condition

ON D-Channel data rate selected at 64 Kbps

and

PRI2 loop is enabled

and

PRI2 link is not in OOS or Local Alarm mode state

and

PRI2 link is not transmitting a Remote Alarm pattern

and

PRI2 link is not receiving a Remote Alarm Indication from a remote facility

OFF All other conditions

553-2901-201 Standard 5.0 June 1999


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On-board NTBK51AA D-Channel Handler DaughterboardThe optional dual-port Downloadable D-Channel daughterboard (DDCHNTBK51AA) can be used with the NT5D97 DDP2 in system hardware configurations as an alternative to an MSDL or a DCHI card (refer to “Hardware required for DDP2 configuration” on page 65 for possible configurations).

Note: Only one version, the NTBK51AA, can be used in DDP2 cardThe newer NTBK51BA version has only 30+30 pin connectors (insteof 40+30 pins in the AA version). The missing 10 pins in the BA versioprohibits usage of port 0 on the DDP2 card.

The NTBK51AA DDCH daughterboard is a two-port D-Channel Handlercard supporting all the features of the existing four port MSDL (NT6D80).eliminates the need for a D-Channel Handler or an MSDL card, and associated cables.

The NTBK51AA can support a maximum of 32 (16*2) D-Channels per system (the MSDL can support a maximum of 64).

Note 1: The software allocation for NTBK51AA DDCH is similar to theMSDL. It is both physical and logical, and supports D-Channel functionality only.

Note 2: Port 0 has to be an even loop on the DDP2, and Port 1 has tan odd loop. Port 2 and Port 3 should not be configured.

The connection between the DDP2 card and the DDCH daughterboard imade using two headers: one 30 pin and one 40 pin connector.

The main functions of the card are:

— Dual-port Serial Communication Controller message handling with DMA for support of 2 D-channels;

— Sanity check and Self Tests;

— Program download from the Meridian 1 CPU;

— Serial maintenance port (for debugging purposes).



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DDP2 faceplateFigure 14 illustrates the faceplate layout for the DDP2 card. The faceplacontains an enable/disable switch; a DDCH status LED; 6 x 2 trunk port staLEDs; and six external connectors. Table 12 shows the name of each connector, its designation with respect to the faceplate and the name andescription of the card it is connected to. Also shown are the names of thLEDs.

553-2901-201 Standard 5.0 June 1999



Figure 14NT5D97AA faceplate

D-Channel LED

ENET LEDTrunk Disable LED

Trunk Out of Service LEDNear End Alarm LED

Far End Alarm LEDLoop Back LED

Recovered Clock0#1Recovered Clock0#2Recovered Clock1#1Recovered Clock1#2

External DCHI/MSDL

Trunk0 / Trunk1

553-7380

EnbDis




Table 12External connectors and LEDs

FunctionFaceplate Designator Type Description

Switch ENB/DIS Plastic, ESD protected Card Enable/disable switch

Connectors Unit 0 Clock 0 RJ11 Connector Connects reference clock 0 to Clock Controller card 0

Unit 0 Clock 1 RJ11 Connector Connects reference clock 0 to Clock Controller card 1



J5 TRK 9 Pin Female D Connector

Two external E1 Trunk 0 and Trunk 1

J6 DCH 26 Pin Female D Connector

Connects to external DCHI or MSDL

LEDs ENET 2 Red LEDs ENET 0 or ENET 1 is disabled

DIS 2 Red LEDs Trunk 0 or Trunk 1 is disabled

OOS 2 Yellow LEDs Trunk is out of service

NEA 2 Yellow LEDs Local (Near End) Alarm

FEA 2 Yellow LEDs Far End Alarm

LBK 2 Yellow LEDs Loop Back test being performed on Trunk 0 or Trunk 1

DCH Bicolor Red/Green LED NTBK51AA status

553-2901-201 Standard 5.0 June 1999


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The following is a brief description of each element on the faceplate.

Enable/Disable SwitchThis switch is used to disable the card prior to insertion or removal from network shelf. While this switch is in disable position, the card will not respond to the Meridian 1 CPU.

ENET LEDsTwo red LEDs which indicate if the “ENET0” and “ENET1” portions of thecard are disabled. These LEDs are lit in the following cases:

• When the enable/disable switch is in disabled state (lit by hardwa

• After power-up, before the card is enabled.

• When the ENET port on the card is disabled by software.

Trunk Disable (DIS) LEDsTwo red LEDs which indicate if the “trunk port 0” or “trunk port 1” portionsof the card are disabled. These LEDs are lit in the following cases:

• Upon reception of the “disable loop” message from the software

• After power-up.

OOS LEDsTwo yellow LEDs which indicate if the “trunk port 0” and “trunk port 1” portions of the card are out of service.

NEA LEDsTwo yellow LEDs which indicate if the near end detects absence of incomsignal or loss of synchronization in “trunk port 0” or “trunk port 1” respectively. The Near End Alarm causes a Far End Alarm signal to be transmitted to the far end.

FEA LEDsTwo yellow LEDs which indicate if a Far End Alarm has been reported by far end (usually in response to a Near End Alarm condition at the far end“trunk port 0” or “trunk port 1”.



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e

DL


LBK LEDsTwo yellow LEDs which indicate if a remote loopback test is being performed on trunk port 0 or trunk port 1. The loopback indication is actiwhen the digital trunk is in remote loopback mode. Normal call processininhibited during remote loopback test.

DCH LEDDual color red/green LED which indicates that the on-board DDCH is presbut disabled (red), or is present and enabled (green). If a DDCH is not configured on the DDP2 card, this lamp will not be lit.

Unit 0 Clk ConnectorsTwo RJ11 connectors for connecting:

— Digital trunk unit 0 recovered clock to primary or secondary referencsource on clock controller card 0.


Unit 1 Clk ConnectorsTwo RJ11 connectors for connecting:



Connector J5 (TRK)A 9 pin D-Type connector used to connect:

— Digital trunk unit 0 receive and transmit Tip / Ring pairs.

— Digital trunk unit 1 receive and transmit Tip / Ring pairs.

Connector J6 (DCH)A 26 pin D-type connector (identical to the one used on the NTCK43 dual-port PRI2 card), used to connect the DDP2 card to the external MSor D-channel handler.

553-2901-201 Standard 5.0 June 1999


card er ical

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System capacity and performancePhysical ca pacit yEach NT5D97 DDP2 card occupies one slot on the network shelf. Each supports two digital trunk circuits and two network loops. The total numbof DDP2 cards per system is limited by the number of network loops, physcapacity of the shelf, number of DTI2/PRI2 interfaces allowed by the software and the range of DCH addresses.

D-Channel ca pacit yThe software configuration for the NTBK51AA DDCH is similar to the MSDL. It is both physical and logical, and supports D-Channel functionalonly.

Meridian 1 has a total capacity of 16 addresses (Device Addresses or DNthat may be reserved for DCHI card, MSDL card or DDCH card. One exception is DNUM 0 which is commonly assigned to the TTY terminal.

No two different D-Channel providers can share the same DNUM. Hence,combined maximum number of DCHI, MSDL and DDCH cards in the systis 16.

The DCHI has one D-Channel unit, the DDCH has two D-Channel units, the MSDL has up to four. Therefore the total number of D-Channel in a Meridian 1 is derived by the following formula:

Total_Num_DCH-Units = Num_DCHIx1 + Num_DDCHx2 + Num_MSDLx4

Therefore, Total_Num_DCH-Units in any given system is between 0-63.

CPU capacit yUsing a NT5D97 DDP2 card instead of DTI2/PRI2 cards does not increathe load on the Meridian 1 CPU. The DDP2 replaces an ENET card andDTI2/PRI2 cards. Emulating the ENET card and the overall CPU capacitnot impacted by using a DDP2 card instead of a DTI2/PRI2 card.



60

d


Power re quirementsTable 13 lists the power requirements for the NT5D97 DDP2 card.

Table 13NT5D97 DDP2 power requirements

Testability and diagnosticsThe DDP2 card supports testing and maintenance functions through thefollowing procedures:

• Selftest upon power up or reset;

• Signalling test performed in the OVL 30;

• Loopback tests, self tests, and continuity tests performed by OVLand OVL 45;

• The D-Channel (MSDL, DCHI, DDCH) maintenance is supporteby OVL 96.

Note: The MSDL selftest is not applicable to the NTBK51AA D-Channel daughterboard.

Voltage Source Current

DDP2 (without

NTBK51AA)

DDP2 (with

NTBK51AA)

+5V Backplane 3A 3.8A

+12V Backplane 25mA 75mA

-12V Backplane 25mA 75mA

Total Power (Maximum) 15.6W 20.8W

553-2901-201 Standard 5.0 June 1999


on ian

3

e

m .


Hardware required for DDP2 configurationThe following hardware is required when configuring the NT5D97 DDP2 Meridian 1 Options 21/21E, 51/51C, 61/61C, 71, and 81/81C, and MeridSL-1 STE, RT, XT, and NT systems.

Note: The NT5D97 DDP2 card hardware design uses a B57 ASIC E1/T1 framer. The carrier specifications comply with the ANSI TI.40specification. The NT5D97 provides an interface to the 2.048 Mbps external digital line either directly or through an office repeater, or LinTerminating Unit (LTU).

DTI2/PRI2— NT5D97 DDP2 card

D-Channel InterfaceEither of the following:

Note: Either the DCHI card, the MSDL, or the DDP2 card may be installed first. However, DDP2 loops must be configured in softwarebefore defining DCH links.

an external DCHI card

— NT6D80 MSDL

— NT6D11AF/NT5K75AA/NT5K35AA

or optionally, as a plug-on

— NTBK51AA Downloadable D-Channel daughterboard

Clock Controller— QPC471/QPC775 Clock Controller(s)

Note: For EuroISDN applications and for use on the Meridian 1 systeOption 81/81C in international markets vintage QPC775E is required



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are


Other hardwareAdditional hardware may also required for PRI2 capability and applicatiosuch as to having the NT5D97 DDP2 card connect directly to the PublicSwitched Network, or other exposed plant networks (refer to the Cautionpage 53). This additional hardware may include:

— one Line Terminating Unit (LTU) per E1 span

— one office repeater per E1 span

Installation instructions are given in other Northern Telecom publicationssupplied by the manufacturer.

Cabling requirementsThis section lists the types of cable used and the lengths required for inteand external NT5D97 DDP2 connections.

Note: No additional cabling is required for nB+D configurations. Multiple DDP2 cards and the D-channel are associated through softwin Overlay 17.

DDP2 cable assemblies include:

— E1 carrier cables

• NTCK45AA (A0407956)

• NT8D7217 (A0617192)

• NTCK78AA (A0618294)

• NTCK79AA (A0618296)

— DDP2 to QPC471/QPC775 Clock Controller Cables

• NTCG03AA

• NTCG03AB

• NTCG03AC

• NTCG03AD

553-2901-201 Standard 5.0 June 1999


9


— DDP2 to DCHI cables

• NTCK46AA

• NTCK46AB

• NTCK46AC

• NTCK46AD

— DDP2 to MSDL cables

• NTCK80AA

• NTCK80AB

• NTCK80AC

• NTCK80AD

A detailed discussion of each type of DDP2 cable follows.

E1 carrier cablesNTCK45AA (A0407956)The NTCK45AA (8 ft) is an 120Ω cable for Meridian 1 and Meridian SL-1 systems equipped with an I/O filter panel, connecting the TRK port (P1, D-type 9 pin male) on the DDP2 faceplate to the I/O filter (P2, P3 D-typepin males).

Figure 15NTCK45AA

Table 14 which follows lists the pin attributes for the NTCK45AA cable.

553-7385

P1P2

P3

D-type15 pin, males

D-type9 pin, males




Table 14NTCK45AA cable pins

Cable Name Description ColorDDP2 pins

I/O Panel pins

0 T-PRI0TX Trunk 0 Transmit Tip Black P1-1 P2-6

0 R-PRI0TX Trunk 0 Transmit Ring Red P2-2 P2-7

0 T-PRI0RX Trunk 0 Receive Tip Black P1-3 P2-2

0 R-PRI0RX Trunk 0 Receive Ring White P1-4 P2-3

0 GND Shield Wire Bare N/C Case P2


0 Standard Wire (3”) Bare Case P2 P2-5










553-2901-201 Standard 5.0 June 1999



NT8D7217 (A0617192)The NT8D7217 (50 ft) is an 120Ω cable for Meridian 1 and Meridian SL-1 systems equipped with an I/O filter panel, connecting the 9 pin I/O filter connector to the 9 pin NCTE connector.

Figure 16NT8D7217

Table 15 which follows lists the pin attributes for the NT8D7217 cable.

553-7386

P1 P2

I/O Panel TrunkD-type 9 pin, female

Multiplexer TrunkD-type 9 pin, male




Table 15NT8D7217 cable pins

Cable Name Description ColorDDP2 pins

I/O Panel pins


0 R-PRI0TX Trunk 0 Transmit Ring White P1-7 P2-7


0 R-PRI0RX Trunk 0 Receive Ring Red P1-3 P2-3

0 GND Shield Wire Bare P1-5 N/C



1 R-PRI1TX Trunk 1 Transmit Ring White P1-7 P2-7


1 R-PRI1RX Trunk 1 Receive Ring Red P1-3 P2-3



553-2901-201 Standard 5.0 June 1999


el.


NTCK78AA (A0618294)The NTCK78AA (50 ft) is an 120Ω cable for connecting the TRK port on theDDP2 faceplate (P1, D-type 9 pin male) to the Main Distribution Frame (MDF) (P2, P3 D-type 15 pin males). The NTCK78AA is used for Meridian 1 and Meridian SL-1 systems not equipped with an I/O filter pan

Figure 17NTCK78AA


553-7385

P1P2

P3

D-type15 pin, males

D-type9 pin, males





Cable Name Description ColorDDP2 pins NCTE pins





0 GND Shield Wire Bare P1 Case P2-2








553-2901-201 Standard 5.0 June 1999


nit


NTCK79AA (A0618296)The NTCK79AA (40 ft) is a 75Ω coaxial cable for connecting the TRK porton the DDP2 faceplate (P1, D-type 9 pin male) to the Line Terminating U(LTU) (P2, P3, P4, P5 BNC males).

Figure 18NTCK79AA


553-7388

P1

P2: Unit 0 Tx

P3: Unit 0 RxP4: Unit 1 Tx

P5: Unit 1 RxD-type9 pin, male BNC

males





Cable Name Description ColorDDP2 pins NCTE pins

0 T-PRI0TX Trunk 0 Transmit Tip Red P1-1 P2 inner conductor

0 R-PRI0TX Trunk 0 Transmit Ring Red P1-2 P2 shield

0 T-PRI0RX Trunk 0 Receive Tip Green P1-3 P3 inner conductor

0 R-PRI0RX Trunk 0 Receive Ring Green P1-4 P3 shield

1 T-PRI1TX Trunk 1 Transmit Tip Red P1-5 P4 inner conductor

1 R-PRI1TX Trunk 1 Transmit Ring Red P1-6 P4 shield

1 T-PRI1RX Trunk 1 Transmit Tip Green P1-7 P5 inner conductor

1 R-PRI1RX Trunk 1 Receive Ring Green P1-8 P5 shield

1 Outer metalized PVC shield

Bare N/C P1 Case

1 3 stranded wire Bare N/C P1 Case

553-2901-201 Standard 5.0 June 1999


r


Reference clock cablesThe NTCG03AA (14 ft), NTCG03AB (2.8 ft), NTCG03AC (4.0 ft), or NTCG03AD (7 ft), is a DDP2 card to Clock Controller cable, connecting each of the CLK0 or CLK1 ports on the DDP2 faceplate to the primary osecondary source ports on Clock Controller card 0 or 1.

Figure 19NTCG03AA/AB/AC/AD

553-7384

P1 P22.8, 4, 7 or 14 ft.

Connector P1 - 4 pin, male, RJ11 (DDP2 faceplate)Connector P2 - 9 pin, male, D-type (Clock Controller)

Note: Includes an RJ11Ö9 pin D-type adaptor.



s


MSDL/DCHI cablesExternal DCHI cableThe NTCK46 cable connects the DDP2 card to the NT6D11AF/NT5K75AA/NT5K35AA D-Channel Handler card. The cable iavailable in four different sizes:

— NTCK46AA (6 ft) - DDP2 to DCHI cable

— NTCK46AB (18 ft) - DDP2 to DCHI cable

— NTCK46AC (35 ft) - DDP2 to DCHI cable

— NTCK46AD (50 ft) - DDP2 to DCHI cable

Figure 20NTCK46AA/AB/AC/AD

553-7387

P1P2

P3

D-type15 pin, males

D-type9 pin, males

553-2901-201 Standard 5.0 June 1999


he


External MSDL cableThe NTCK80 cable connects the DDP2 card to the NT6D80 MSDL card. Tcable is available in four different sizes:

— NTCK80AA (6 ft) - DDP2 to MSDL cable

— NTCK80AB (18 ft) - DDP2 to MSDL cable

— NTCK80AC (35 ft) - DDP2 to MSDL cable

— NTCK80AD (50 ft) - DDP2 to MSDL cable

Figure 21NTCK80AA/AB/AC/AD

553-7387

P1P2

P3

D-type15 pin, males

D-type9 pin, males



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ith

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Cabling diagramsFigure 22 and Figure 23 provide examples of typical cabling configuratiofor the DDP2.

Figure 22 shows a typical DDP2 cabling for a Meridian 1 system Option wan I/O panel, with the connection between the I/O panel and a Network Channel Terminating Equipment (NCTE).

Figure 23 shows cabling for a Meridian 1/Meridian SL-1 system without I/O panel. Here, the DDP2 faceplate is cabled directly to the NCTE.

Note: Since there exists several clock cabling options, none has beerepresented in the diagrams. Please refer to “Clocking configurationspage 84 for a description on each available option.

553-2901-201 Standard 5.0 June 1999



Figure 22DDP2 cabling for Meridian 1 and Meridian SL-1 systems with an I/O panel

LED's

Switch

DCH

Trunk

553-8489

clk0Port 0

clk1

clk0Port 1

clk1NCTE

(MDF or LTU) NCTENT8D7217 cable

NT8D7217 cable

Clock Controllers

NTCK78AA/NTCK79AA cable

NTCK80 cable (to MSDL) orNTCK48 cable (to DCHI)

NT6D80 MSDL,or

NT6D11AF/NT5K75AA/NT5K35AA DCHI

Note: for possible clock cabling options, refer to the "Clocking configurations" chapter

EnbDis




Figure 23DDP2 cabling for Meridian 1 and Meridian SL-1 systems without an I/O panel

LED's

Switch

DCH

Trunk

553-7400

clk0Unit 0

clk1

clk0Unit 1

clk1

NCTE(MDF or LTU)

Clock Controllers

NTCK78AA/NTCK79AA cable

NTCK80 cable (to MSDL) orNTCK48 cable (to DCHI)

NT6D80 MSDL,or

NT6D11AF/NT5K75AA/NT5K35AA DCHI

Note: for possible clock cabling options, refer to the "Clocking configurations" chapter

NTCG03 cables

EnbDis

553-2901-201 Standard 5.0 June 1999


e.

a e ther ts as a

ller ly


Clocking for the NT5D97Clock o perationThere are two types of clock operation - tracking mode and free-run mod

Tracking modeIn tracking mode, the DDP2 loop supplies an external clock reference toclock controller. Two DDP2 loops can operate in tracking mode, with ondefined as the primary reference source for clock synchronization, the odefined as the secondary reference source. The secondary reference acback-up to the primary reference.

As shown in Figure 24, a Meridian 1 or Meridian SL-1 system with dual CPUs may have two clock controllers (CC-0 and CC-1). One clock controacts as a back-up to the other. The clock controllers should be completelocked to the reference clock.




Figure 24Clock Controller primary and secondary tracking

553-7401

Primaryclockingsource DDP2

PrimaryReference

DDP2SecondaryReference

J1

J2

J3

Clock ControllerBackup

ClockController 0

ClockController 1

J1

J2

J3

Primary

Primary

Secondary

Secondary

REF 1

REF 2

REF 1

REF 2


553-2901-201 Standard 5.0 June 1999


te

ck ck

ich the ler,

iver

ith

al led,

, it

k .


Free run (non-tracking) modeThe clock synchronization of the Meridian 1 or Meridian SL-1 may operain free-run mode if:



— the primary and secondary references are in local (near end) alarm

Reference clock errorsMeridian 1 software checks at intervals of 1 to 15 minutes to see if a clocontroller or reference-clock error has occurred. (The interval of this checan be configured in Overlay 73).

In tracking mode, at any one time, there is one active clock controller whis tracking on one reference clock. If a clock controller error is detected,Meridian 1 or Meridian SL-1 system switches to the back-up clock controlwithout affecting which reference clock is being tracked.

A reference-clock error occurs when there is a problem with the clock dror with the reference clock at the far end. If the clock controller detects areference-clock error, the reference clocks are switched.

Automatic clock recover yA command for automatic clock recovery can be selected in Overlay 60 wthe command EREF.

A DDP2 loop is disabled when it enters a local-alarm condition. If the localarm is cleared, the loop is enabled automatically. When the loop is enabclock tracking is restored in the following conditions:

— If the loop is assigned as the primary reference clock but the clock controller is tracking on the secondary reference or in free-run modeis restored to tracking on primary.

— If the loop is assigned as the secondary reference clock but the cloccontroller is in free-run mode, it is restored to tracking on secondary



ce

e

or ner:

k, it TC

ock,

tem.

ive dary ards ame able

k lk1


— If the clock check indicates the switch is in free-run mode:

• Tracking is restored to the primary reference clock if defined.

• If the primary reference is disabled or in local alarm, tracking is restored to the secondary reference clock if defined.

Note: If the Meridian 1 or Meridian SL-1 was put into free-run modeintentionally by the craftsperson, it will resume tracking on a referenclock unless the clock-switching option has been disabled (LD 60, command MREF), or the reference clock has been “undefined” in thdatabase.

Automatic clock switchin gIf the EREF command is selected in Overlay 60, tracking on the primarysecondary reference clock is automatically switched in the following man

— If software is unable to track on the assigned primary reference clocswitches to the secondary reference clock and sends appropriate Dmaintenance messages.

— If software is unable to track on the assigned secondary reference clit switches to free run.

Clockin g confi gurationsClock Controllers may be used in a single CPU system or a dual CPU sys

A single CPU system has one Clock Controller card. This card can recereferences clocks from two sources referred to as the primary and seconsources. These two sources can originate from a PRI2, DTI2, etc. PRI2 csuch as the NT8D72BA are capable of supplying two references of the sclock source. These are known as Ref1 (available at J1) and Ref2 (availat J2) on the NT8D72BA.

The NT5D97 card is capable of supplying two references from each clocsource, i.e., four references in total. NT5D97 can thus supply Clk0 and Cfrom Unit 0 and Clk0 and Clk1 from Unit 1. Either Unit 0 or Unit 1 can originate primary source, as shown in Figure 25 through Figure 28.

There is one Clock Controller cable required for the DDP2 card, which isavailable in four sizes; this is the NTCG03AA/AB/AC/AD. Refer to “Reference clock cables” on page 75 for more information.

553-2901-201 Standard 5.0 June 1999


s in


Table 18 summarizes the clocking options. Table 19 explains the optionmore detail.

Table 18Clock Controller options- summary

CC Option CPU Type Notes

Option 1 Single Ref from P0 on Clk0

Ref from P1 on Clk0

Option 2 Dual Ref from P0 on Clk0

Ref from P0 on Clk1


Ref from P1 on Clk1


Ref from P0 on Clk1

Ref from P1 on Clk0

Ref from P1 on Clk1




Table 19Clock Controller options - description

Clock Option

Notes

Option 1 This option provides a single CPU system with 2 clock sources derived from the 2 ports of the DDP2.

Connector Clk0 provides a clock source from Unit 0.

Connector Clk0 provides a clock source from Unit 1.

Refer to Figure 25.

Option 2 This option provides a Dual CPU system with 2 references of a clock source derived from port 0 of the DDP2.

Connector Clk0 provides a Ref 1 clock source from Unit 0.


Refer to Figure 26.

Option 3 This option provides a Dual CPU system with 2 references of a clock source derived from port 1 of the DDP2.



Refer to Figure 27.

Option 4 This option provides a Dual CPU system with 2 references from each clock source derived from the DDP2.





Refer to Figure 28.

553-2901-201 Standard 5.0 June 1999



Figure 25Clock Controller - Option 1

553-7401

Primaryclockingsource DDP2

PrimaryReference

DDP2SecondaryReference

J1

J2

J3

Clock ControllerBackup

ClockController 0

ClockController 1

J1

J2

J3

Primary

Primary

Secondary

Secondary

REF 1

REF 2

REF 1

REF 2






553-7403

PrimaryReference

Port 0

DDP2

Port 1

Clock Controllerfor CPU 0


Secondary Ref 1

Secondary Ref 2

Secondary Ref 1

Secondary Ref 2J1 Sec.

J2 Prim.

J1 Sec.

J2 Prim.Primary Ref 1

Primary Ref 2

Both references from port 0

clk 0

clk 1

Clk0

Clk1

Port 0

DDP2

Port 1

clk 0

clk 1

Clk0

Clk1

SecondaryReference

NT8D72BA

J1 Ref 1

J2 Ref 2

An NT8D72BA maybe configured as an

alternate to DDP2

553-2901-201 Standard 5.0 June 1999




553-7404

PrimaryReference

Port 0

DDP2

Port 1



Secondary Ref 1

Secondary Ref 2

Secondary Ref 1

Secondary Ref 2

J1 Sec.

J2 Prim.

J1 Sec.


Primary Ref 2

Both references from port 1

clk 0

clk 1

Clk0

Clk1

Port 0

DDP2

Port 1

clk 0

clk 1

Clk0

Clk1

SecondaryReference

NT8D72BA

J1 Ref 1

J2 Ref 2

An NT8D72BA maybe configured as an

alternate to DDP2





553-7402

PrimaryReference

Port 0

DDP2

Port 1



J1 Sec.

J2 Prim.

J1 Sec.


Primary Ref 2

Secondary Ref 1

Secondary Ref 2

Both references from both ports

clk 0

clk 1

Clk0

Clk1

SecondaryReference

553-2901-201 Standard 5.0 June 1999

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108

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DCHI installation for all systemsInstalling the NT6D11AB, NT6D11AE, NT6D11AF DCHI

Installation instructions for the NT6D11AB, NT6D11AE, and NT6D11AEDCHIs are the same for Meridian 1 system options 21/21E, 51/51C, 61/671, 81 and SL-1 systems ST/STE, NT, and XT. These instructions applyhardware both for primary and backup D-channels. D-channel lines musconditioned for 64K before D-channels can be brought up.

Note: To configure J1, the asynchronous port on the DCHI card, refethe documentation of the application being interfaced, and to NTP 553-3001-211 (circuit-pack switch settings). J1 configuration is not described here.


of 222 DCHI installation for all systems

s its) sed

is t. mode


Setting up the NT6D11AB, NT6D11AE, NT6D11AF DCHIDIP switch settings

The NT6D11AB/AE/AF has three sets of DIP switches. Each port has it'own bank of 10 DIP switches (SW1 & SW2) to select the port address (8 band mode of operation (2 bits). SW1 is used for port 0 settings, SW2 is ufor port 1 settings. SW3 is used to select the D-Channel protocol. Port 0used to select whether the asynchronous ESDI port is be disabled or noPort 1 is used to select the standard or expanded D-Channel addressingon the NT6D11AB/AE/AF.

The DIP switches are located as shown by Figure 29.

Figure 29NT6D11 DIP switches

553-7349

PORT 0

PORT 1

1 2SW3

1 10SW1

1 10SW2

553-2901-201 Standard 5.0 June 1999

DCHI installation for all systems Page 93 of 222


Protocol selectionSW3 is used to select the D-Channel protocol, as shown by Table 20.

Note: The setting must be 1 for ISDN applications.

Table 20Protocol selection switch settings

Protocol Switch Setting

SW3.1 SW3.2

DPNSS1 0 0

ISDN 1 1



is


Valid switch combinationsThe following are the only allowable switch setting combinations (not including address switch settings).

Port 0Port 0 can be configured as asynchronous ESDI, or disabled. If the portconfigured as disabled, it will not be visible to the system CPU. Refer to Table 21.

Table 21Port 0 settings

Mode Switch setting

SW1.1 SW1.2 SW3.1 SW3.2

Asynchronous ESDI

Note: DO NOT USE THIS SELECTION.

1 0 0 0

Asynchronous ESDI 1 0 1 1

Port disabled 1 1 - -

553-2901-201 Standard 5.0 June 1999


rt to


Port 1The following are the only valid emulation modes combinations. If the pois configured as disabled, it will not be visible to the system CPU. Refer Table 22.

Note: The ISDN emulation must be selected.

Table 22Port 1 settings

Mode Emulates Switch setting

SW2.1 SW2.2 SW3.1 SW3.2

DPNSS1 NT5K35AA 0 0 0 0

ISDN NT6D11AB/AE 0 0 1 1

Expanded DPNSS1

NT5K75AA 0 1 0 0

Port disabled 1 1 - -



t. g


Jumper settingsThe NT6D11AB/AE/AF has two banks of option straps, one for each porThese select between DCE and DTE operation and whether the signallininterface is RS232 or RS422. Refer to Figure 30 and Figure 31.

Figure 30NT6D11 DCHI with ISL high-speed programming jumper settings

553-7350

PORT 0

PORT 1

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422

553-2901-201 Standard 5.0 June 1999



Figure 31NT6D11 DCHI with ISL low-speed programming jumper settings

553-7351

PORT 0

PORT 1

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422



ed or

mode


Port addressing modesPort 0 Mode selectionPort 0 is used to select whether the asynchronous ESDI port is be disablnot. Refer to Table 23.

Note: The asynchronous ESDI port must be set to “disabled”.

Table 23Port 0 mode selection

Port 1 mode selectionPort 1 is used to select the standard or expanded D-Channel addressingon the NT6D11AB/AE/AF. Refer to Table 24.

Table 24Port 1 mode selection

Port Mode Switch Setting

SW1.1 SW1.2

Not used 0 -

Asynchronous ESDI 1 0

Port disabled 1 1

Port Mode Switch Setting

SW2.1 SW2.2

Synchronous, D-Channel, standard addressing

Note: THIS SELECTION MUST BE MADE FOR ISDN.

0 0

Synchronous, D-Channel, expanded addressing

0 1

Not used 1 0

Port disabled 1 1

553-2901-201 Standard 5.0 June 1999


to


Port address switch settingsPort address switch settings in the standard mode, for ISDNThe table that follow depict the port address switch settings in that applySW1 or SW2, the D-Channel port, form ISDN mode. Refer to Table 25.

Table 25Port address switch settings for ISDN

Port Address Switch Setting

Half Group No. Device No.

S3 S4 S5 S6 S7 S8 S9 S10

0 0 0 0 0 0 0 0 x

1 0 0 0 0 0 0 1 x

2 0 0 0 0 0 1 0 x

3 0 0 0 0 0 1 1 x

4 0 0 0 0 1 0 0 x

5 0 0 0 0 1 0 1 x

6 0 0 0 0 1 1 0 x

7 0 0 0 0 1 1 1 x

8 0 0 0 1 0 0 0 x

9 0 0 0 1 0 0 1 x

10 0 0 0 1 0 1 0 x

11 0 0 0 1 0 1 1 x

12 0 0 0 1 1 0 0 x

13 0 0 0 1 1 0 1 x

14 0 0 0 1 1 1 0 x

15 0 0 1

16-31 0 0 1




32-47 0 1 0

48-63 0 1 1

64-79 1 0 0

80-95 1 0 1

96-111 1 1 0

112-127 1 1 1

Port Address Switch Setting

Half Group No. Device No.

S3 S4 S5 S6 S7 S8 S9 S10

553-2901-201 Standard 5.0 June 1999



Procedure 1Installing the NT6D11AB, NT6D11AE, NT6D11AF DCHI

Step Action

1 Determine the cabinet and shelf location for the circuit pack being installed.

The NT6D11AB, NT6D11AE, or NT6D11AF DCHI card can be installed in any slot appropriate for an I/O port card on a Network shelf. (The NT6D11 DCHI card can be located on the Common Equipment shelf only on single-CPU switches.)

2 Unpack and inspect card.

3 Set option switches on the DCHI card. For PRA capability, set port J2 to odd.

For ISL capability, set port J2 for high speed or low speed operation.

(See Figure 30, Figure 31, Table 25).

4 Set faceplate toggle switch to DISABLE.

5 Install DCHI card into the assigned shelf and slot.

6 Connect DCHI port J2 to the NT8D72AB or NT8D72BA PRI port J5 with a QCAD328A cable.

7 Set faceplate toggle switch to ENABLE.

8 Coordinate the start-up and verification of the DCHI with the start-up of the PRI. See the International ISDN PRA Administration document (553-2901-301).

Enable the DCHI card using Overlay 96, command ENL DCHI N.

Refer to PRA Start-up in the International ISDN PRA Maintenance (553-2901-501) for additional information.




Removing the NT6D11AB, NT6D11AE, NT6D11AF DCHI

CAUTIONThe NT6D11AB, NT6D11AE, NT6D11AF DCHI must be software disabled before it is hardware disabled or initialization will occur.

Procedure 2Removing the NT6D11AB, NT6D11AE, NT6D11AF DCHI

Step Action

1 Disable the NT6D11AB, NT6D11AE, NT6D11AF DCHI using Overlay 96, command DIS DCHI N.

Note: If asynchronous port J1 is enabled, it must also be software disabled, using Overlay 37, or initialization will occur.

2 If the circuit pack is being completely removed, not replaced, remove data from memory.

3 Determine the cabinet and shelf location of the card to be removed.


5 Disconnect NT6D11AB, NT6D11AE, NT6D11AF DCHI cables.

6 Remove NT6D11AB, NT6D11AE, NT6D11AF DCHI card.

7 Pack and store card.

553-2901-201 Standard 5.0 June 1999

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108

rate

e

or


NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97

Note to installersBefore beginning an installation, do the following:

— Consult the Spares Planning Guide (553-3001-153) document and follow the instructions.

— Bring spares of all cables and boards.

— Remember that test procedures require a 24-hour minimum bit error-testing before being used. See the International PRI Administration (553-2901-301) for these test procedures.

— Either the DDCH, the MSDL, or the NTCK43 or NT5D97 card may binstalled first. However, NTCK43 or NT5D97 PRI2 loops must be configured in software before defining DCH links.

The only version of the NTBK51 DDCH that can be used on an NTCK43NT5D97 is the NTBK51AA . Vintage NTBK51BA cannot be used, due to adifferent pin configuration (the NTBK51BA is used on the Meridian 1 Option 11C.)


of 222 NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97

1 NT

hen sent

fore the


Installing the NTBK51 DDCH for the NTCK43 Dual-port PRI2 card

Installation instructions for the NTBK51 DDCH are the same for Meridiansystem options 51/51C, 61/61C, 71, 81/81C and SL-1 systems ST/STE,and XT.

Set the address for the DDCH. If a DDCH is present on a Dual PRI pack tan external D-Channel should not be connected to P3. If a DDCH is prethe LED “DCH” will light up.

CAUTIONThe static discharge bracelet located inside the cabinet must be worn behandling circuit cards. Failure to wear the bracelet can result in damage tocircuit cards.

1 The DDCH can be mounted on any Dual PRI card except those in slots that are occupied by BTUs.

2 Unpack and inspect the DDCH Daughterboard.

3 The DDCH comes with 4 stand-offs so that it can be mounted onto the Dual PRI. These are easily pushed into 4 corresponding mounting holes on the Dual PRI.

4 The DDCH is mounted so that it mates correctly with P9 and P11 on the Dual PRI motherboard.

553-2901-201 Standard 5.0 June 1999

NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97 Page 105 of 222

fore the


Removing the NTBK51 DDCH for the NTCK43 Dual-port PRI2 card

Removal instructions for the NTBK51 DDCH are the same for Meridian 1system options 21/21E, 51/51C, 61/61C, 71, 81/81C and SL-1 systems ST/STE, NT and XT.

CAUTIONThe static discharge bracelet located inside the cabinet must be worn behandling circuit cards. Failure to wear the bracelet can result in damage tocircuit cards.

The DDCH can only be removed when it is disabled in S/W.

The associated PRI link must also be disabled.

1 Disable the faceplate switch on the Dual PRI. If S1 is not disabled the Meridian 1 system will initialize.

2 Remove the Dual PRI and DDCH.



ian

CH on a If a

it


Installing the NTBK51 DDCH for the NT5D97 Dual-port DRI2/PRI2 card

Installation instructions for the NTBK51AA DDCH are the same for Meridian 1 Options 21/21E, 51/51C, 61/61C, 71, and 81/81C, and MeridSL-1 STE, RT, XT, and NT systems.

The DDCH can be mounted on any DDP2 card. Set the address for the DD(see the switch settings section to set the address). If a DDCH is presentDDP2 card then an external D-Channel should not be connected to J6. DDCH is present the LED “DDCH” will light up.

CAUTION

The static discharge bracelet located inside the cabinet must be worn before handling circucards. Failure to wear the bracelet can result in damage to the circuit cards.

Step Action

1 Unpack and inspect the DDCH daughterboard.

2 The DDCH comes with four stand-offs so that it can be mounted onto the DDP2. These are easily pushed into 4 corresponding mounting holes on the DDP2.

3 Mount the DDCH so that it mates with P2 and P3 on the DDP2 motherboard.

4 Set the DDP2 ENB/DIS faceplate switch to Enable (ON).

The DDCH LED should flash three times.

553-2901-201 Standard 5.0 June 1999

NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97 Page 107 of 222

ian

it


Removing the NTBK51 DDCH for the NT5D97 Dual-port DRI2/PRI2 card

Removal instructions for the NTBK51AA DDCH are the same for Meridian 1 Options 21/21E, 51/51C, 61/61C, 71, and 81/81C, and MeridSL-1 STE, RT, XT, and NT systems.

CAUTION


Step Action

1 The DDCH can only be removed when it is disabled in software.

2 Both ports of the associated DDP2 card must be disabled.

3 Set the DDP2 ENB/DIS faceplate switch to Disable (OFF).

4 Remove the DDP2 and the DDCH.




553-2901-201 Standard 5.0 June 1999

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112

ace

list

32.

ng

ree t is

le.


MSDL installation for all systemsInstalling the MSDL

Installation instructions for the MSDL card are the same for Meridian 1 system options 21/21E, 51/51C, 61/61C, 71, 81/81C and SL-1 systems ST/STE, NT and XT. See Figure 32, and Table 26 for the port and interfswitch settings.

Procedure 3Installing the MSDL card

1 Determine module and slot location for the MSDL card. Refer to the above. The MSDL card can go into the following slots.

STE/21E CE/PE Network Module slot 4-9NT, 51/51C, 61/61C CPU/Network Module slot 1-8XT, 71 Network Module slot 5-1281/81C Network Module slot 5-12

2 Unpack and inspect the MSDL card.

3 Set the MSDL switch settings to correspond to Table 26, and Figure

4 Insert the MSDL card into the selected card slot of the module followithe card guides.

5 Observe the red LED on the MSDL faceplate. If it turns on, flashes thtimes, and stays on continuously, the MSDL is operating correctly bunot yet enabled.

If the LED turns on and stays on continuously without flashing threetimes, the card may be defective. Go to step 8.

6 Run and connect the cables: NTND80 to PRI J5 with a NTND26 cab


of 222 MSDL installation for all systems

sh

not


7 Enable the MSDL card in LD96.

8 Unplug the MSDL card and reinsert it. If the red LED still does not flathree times, leave the card installed for approximately 10 minutes toallow the card to be initialized.

9 After 10 minutes unplug the card, reinsert it and if the card still does flash three times, the card is defective and must be replaced.

Figure 32MSDL card layout

0 9 8 7654

321

0 9 8 7654

321

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

Ones

DCELED

Port 0

Port 1

Port 2

Port 3

MonitorPort

DTE

S4 S8

422232

Card Address Select Switches

Tens

S9 S10

DCE DTE

S3 S7

422232

DCE DTE

S2 S6

422232

DCE DTE

S1 S5

422232

553-5431

553-2901-201 Standard 5.0 June 1999

MSDL installation for all systems Page 111 of 222


Table 26MSDL switch settings

Port 0 — SW4 Port 0 — SW8

RS-232-D

RS-422-ADTE

RS-422-ADCE

off off off off off off off off


on on on on on on on on

off off off off off off off off off off

on on on on on on on on on on



RS-232-D

RS-422-ADTE

RS-422-ADCE








RS-232-D

RS-422-ADTE

RS-422-ADCE








RS-232-D

RS-422-ADTE

RS-422-ADCE








of 222 MSDL installation for all systems

32.

ree t is

le.

sh

not


Procedure 4Replacing the MSDL card

1 Disable the MSDL card in LD 96.

2 Disconnect MSDL to PRI cables.

3 Remove the faulty MSDL card.

4 Unpack and inspect the new MSDL card.

5 Set the MSDL switch settings to correspond to Table 26, and Figure

6 Insert the new MSDL card into the selected card slot of the module following the card guides.

7 Observe the red LED on the MSDL faceplate. If it turns on, flashes thtimes, and stays on continuously, the MSDL is operating correctly bunot yet enabled.

If the LED turns on and stays on continuously without flashing threetimes, the card may be defective. Go to step 10.

8 Run and connect the cables: NTND80 to PRI J5 with a NTND26 cab

9 Enable the MSDL card in LD96.

10 Unplug the MSDL card and reinsert it. If the red LED still does not flathree times, leave the card installed for approximately 10 minutes toallow the card to be initialized.

11 After 10 minutes unplug the card, reinsert it and if the card still does flash three times, the card is defective and must be replaced.

553-2901-201 Standard 5.0 June 1999

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124

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TI

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PRI and clock controller installation: 21/21E and ST/STE

Note: For information on the installation of the QPC720 PRI card (if required for the 1.5/2.0 Mb/s Gateway feature), refer to 553-2901-20

PRI circuit pack locationsEach PRI circuit pack requires two adjacent slots on a shelf. PRI packsbe placed in:

— System option 21/21E: slots in NT8D11 Common/Peripheral EquipmModule and NT8D47 Remote Peripheral Equipment Module

— SL-1 systems ST/STE: slots in the Common Equipment (CE) and DExpansion Tier

Cable requirementsShielded 22 AWG (0.644 mm) cables NT8D7205 and NT8D7206 are recommended for connecting the PRI to the cross-connect point. Thesecables consist of two twisted-pair conductors (to manufacture cables of lengths different than those of the standard cables provided, see the "Non-standard cables" section of this practice.)

The transmit and the receive pairs must be enclosed in a polyvinyl jackeThis type of cable is commonly referred to as "6-conductor" cable. The cashould be grounded at the cross-connect point. In addition to twisted-paconductors, 75-ohm coaxial cable can also be used to provide connectiothe office repeater or line terminating unit (LTU).


of 222 PRI and clock controller installation: 21/21E and ST/STE

cho


See Figure 33 and Figure 34 for cabling arrangements under Meridian 1system options 21/21E and SL-1 systems ST/STE, with and without an ecanceller, respectively; also, refer to Table 27 for a description of these cables.

A note about illustrationsThroughout this document,

The recommended order of PRI connections for the Universal I/O Panel(P0715058) for NT8D11 CE/PE Module (system option 21) follows.

— with echo canceller, J4 and J12 for the T1, J8 for the echo canceller

— without echo canceller, J4, J8, and J12 for the T1s

553-2901-201 Standard 5.0 June 1999

PRI and clock controller installation: 21/21E and ST/STE Page 115 of 222


Figure 3321/21E and SL-1 ST/STE cabling without echo canceller

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

2Mb/sstream

RS-232

NT8D72AAPRI Card

(Primary reference)NT8D79AA

No connection

No connection

No connection

QCAD328A

NT8D85AB

NT8D7205 repeater(Note 2)

CabinetI/O Panel(Note 1)

Note 1: Maximum cable distance from PRI card to cross connect is 200 m (655 ft) . Note 2: Maximum cable distance from PRI card to repeater is 229 m (750 ft).

NT8D79AA to PRI Card(Secondary reference)

553-1389

J3

J2

J1

QPC471Clock

Controller0

J2QPC757

DCHI

J2Network

Card

DS-1Cross-Connect

Terminal




Figure 34ST, STE, 21, 21E cabling with echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232

QPC720PRI Card(Primary

reference)QCAD130

No connection

No connection

QCAD328A orNTND26

QCAD124

QCAD133

RS232QCAD129

Echo CancellerQCAD128 orQCAD133 LD-1

(Note 2)Cabinet

I/O Panel (Note 1)

CabinetI/O Panel

22 AWG ABAM

Note 1: Maximum cable distance from PRI card to DS-1 cross connect is 200 m (655 ft). Note 2: Maximum cable distance from PRI card to LD-1 is 229 m (750 ft).Note 3: QPC720 does not interface with NT8D04 Superloop Network Card.

QCAD130 to PRI Card(Secondary reference)

553-1390

J3

J2

J1

QPC471Clock

Controller0

J2QPC757

orNT6D80

J2

T1

RS232

QPC414(Note 3)

DS-1Cross-Connect

Terminal

553-2901-201 Standard 5.0 June 1999


I.


Note: No additional cabling is required for multiple PRIs. The D-channel is associated through software in Overlay 17, prompt PR

Table 27PRA Cabling for 21/21E and ST/STE

Cable From Con To Des Con Notes

NT8D79AA PRI card J1 Clock controller

CC-0 J2 Only when primary clock source.


CC-0 J1 Only when secondary clock source.

NT8D85AB PRI card J3 Network Run directly to Network pack.

NTND26 PRI card J5 MSDL X11 release 18 Level H and later

QCAD328A PRI card J5 DCHI J2 Run directly to DCHI card.

NT8D7205 I/O Panel Cross connect

NT8D7206 PRI card J4 I/O panel

QCAD129 PRI card J6 I/O Panel Echo canceller

RS-232 I/O Panel Echo canceller

RS-232 PRI card J6 Echo canceller



s.

ld


Switch settingsFigure 35 shows the NT8D72AA, NT8D72AB, and NT8D72BA PRI dip switch settings for Meridian 1 system options 21/21E and SL-1 systems ST/STE. Table 28 indicates the Transmission equalization switch setting

Figure 35NT8D72AA, NT8D72AB, and NT8D72BA

Note: For EuroISDN applications, the default setting (120 ohms) shoube used.

75

75

ohm switch setting

ohm switch setting

OR

S1 S2

S1 S2 S1 S2

S1 S2

OR

120 ohm switch setting (default)


OFF

ON

OFF

ON

OFF

ON

OFF

ON1 2

1 2

1 2

1 2

NT8D72AA, NT8D72AB

NT8D72BA

553-7533

553-2901-201 Standard 5.0 June 1999



Table 28NT8D72AB, NT8D72BA PRI transmission equalization switch settings for 21, 21E, ST, STE

Switch S2 settings To repeater facility To cross-connect point

5 on

2, 4, 6 on

1, 3, 7 on

0 - 45 m(0 - 150 ft)

46 - 135 m(151 - 450 ft)

136 - 225 m(451 - 750 ft)

0 - 30 m(0 - 100 ft)

31 - 100 m(101 - 355 ft)

101 - 200 m(356 - 655 ft)

Switch 3 options for PRI with ESF

SW3-1 on = extended superframe format (ESF)off = superframe format (SF)

Note 1: All positions on S2 (location B22) are OFF except as shown under the column labeled “Switch S2 settings.” The 8-pole SW3 (location E37) positions are OFF except for SW3-1 as shown for “Switch 3 option for DTI with ESF.”

Note 2: For D2, D3, or D4 framing formats (superframe formats), set all SW3 options to OFF.

Note 3: For the DTI with ESF option, you must set the framing format as ESF with the DLOP prompt in LD17 before you set SW3-1 on the card.




Installing the NT8D72AB, NT8D72BA PRI

Procedure 5Installing the NT8D72AB, NT8D72BA PRI on the 21/21E and ST/STE

Step Action

1 Determine the cabinet and shelf location of the PRI card. The following slots can be used if they are not required for other cards.

System Shelf Slot

ST/STE CE 5—1221/21E NT8D11 CE/PE module 4—8

2 Unpack and inspect circuit packs.

3 Set the option switch on the PRI circuit pack.

The output pulse must fit within the pulse template for a coaxial pair with a 75 ohm resistive load and a balanced pair with a 120 ohm resistive load.

The dip switch, S1, on the NT8D72AB and NT8D72BA can accommodate either 75 or 120 ohms (the 120 ohm setting is the default setting). Refer to Figure 35 for the dip switch positions.

4 Install PRI circuit pack in the assigned shelf and slot.

5 Install Network circuit pack (if no Network loop connection is available).

6 If required, install I/O adapters in I/O panel.

7 Run and connect the PRI cables (refer to Figure 33 and Figure 34, and also to Table 27).

8 If required, install connecting blocks at MDF or wall mounted cross-connect terminal.

9 If required, designate connecting blocks at MDF or wall mounted cross-connect terminal.

10 If required, install Network Channel Terminating Equipment (NCTE).

11 Cross-connect PRI circuits.

12 Add related office data into switch memory. Refer to the work order and the International PRI Feature description and administration (553-2901-301).

553-2901-201 Standard 5.0 June 1999



Installing or replacing the QPC775 clock controller

CAUTIONDo not deviate from this procedure. Deviation will not cause the switch to SYSLOAD or initialize, but will stop call processing.

Procedure 6Installing or replacing the QPC775 clock controller on the 21/21E and ST/STE

Step Action Response

1 Determine the cabinet and shelf location of the QPC775 clock controller to be installed.

The following slots can be used if they are not required for other cards.

System Shelf Slot

ST/STE CE 5—12

21/21E NT8D11 CE/PE module 4—8

2 Unpack and inspect circuit pack.

3 Set option switches and insert option plugs on the new Clock Controller.

Clock Controller Switch Setting

QPC775 SW2 ON

SW3 OFF

SW4 (1, 2) ON

Note: “ON” in switch setting also means “1” or “CLOSED”. “OFF” in switch setting also means “0” or “OPEN”.

4 On the Clock Controller being added, set faceplate toggle switch to DISABLE.

5 When replacing an existing Clock Controller, make sure the existing card is software disabled, using Overlay 60.




6 On the Clock Controller being replaced, set the faceplate toggle to DISABLE.

7 Disconnect cables from Clock Controller card and remove card from the shelf.

The Clock Controller status display in this mode will indicate NO UART (no universal async receiver transmitter). This is normal, however, do not perform a clock status check when receiving this code.

8 Install replacement Clock Controller in the same slot.

9 Run and connect cables (refer to Figure 33 and Figure 34, and also to Table 27).

Connect Primary reference to J2.

Connect Secondary reference, if available, to J1.


11 Turn off DISABLE LED using Overlay 60 and the command ENL Clock Controller 0.

12 Add related office data into switch memory. Refer to work order and the International PRI Feature description and administration (553-2901-301).

13 To track on a primary or secondary reference clock, use Overlay 60. The command is:

TRCK PCK (for Primary)SCLK (for Secondary)FRUN (for Free-Run)

Tracking on a Reference Clock: The Clock Controller, when enabled, will be in free-run mode. It should stay in this mode for several minutes before being switched to tracking mode.

Procedure 6Installing or replacing the QPC775 clock controller on the 21/21E and ST/STE


553-2901-201 Standard 5.0 June 1999



Removing the NT8D72AB, NT8D72BA PRI

Procedure 7Removing the NT8D72AB, NT8D72BA PRI on the 21/21E and ST/STE

Step Action

1 Disable Network Loop using Overlay 60. The command is DISL "loop number."

2 If the PRI pack is being completely removed, not replaced, remove data from memory. See the International PRI Feature description and administration (553-2901-301).

3 Determine the cabinet and shelf location of the PRI pack to be removed.

4 Remove cross connections at MDF to wall-mounted cross-connect terminal.

5 Tag and disconnect cables from pack.

Rearrange Clock Controller cables if required.

Ensure D-channel is not left hanging.

6 Remove the PRI and Network circuit packs.

Note: If the other circuit of a dual Network pack is in use, DO NOT remove the Network pack.

7 Pack and store the PRI and Network circuit packs.




553-2901-201 Standard 5.0 June 1999

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PRI and clock controller installation: 51/51C, 61/61C and NT


PRI circuit pack locationsThe PRI circuit pack occupies two adjacent slots on a shelf. As many ascircuit packs can be plugged into an empty Network shelf, along with a PoConverter circuit pack. Specific locations will depend on available space

Note: Due to physical width, Bus Terminating Units (BTUs) and PRIcannot fit next to each other on a shelf.

This section includes instructions for installing an additional Network shein Meridian 1 system options 51/51C, 61/61C and SL-1 NT (when no vacpositions are available to install PRI packs, additional Network shelves creplace Peripheral Equipment shelves located on the rear of the CommoEquipment or Disk shelves).

If an additional cabinet is required to install more Network shelves, use aQPC58 cabinet.

Cable requirementsShielded 22 AWG (0.644 mm) cables NT8D7205 and NT8D7207 are recommended for connecting the PRI to the cross-connect point. This cconsists of two twisted-pair conductors.

The transmit and the receive pairs must be enclosed in a polyvinyl jackeThis type of cable is commonly referred to as "6-conductor" cable. The cashould be grounded at the cross-connect point.


of 222 PRI and clock controller installation: 51/51C, 61/61C and NT

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s


In addition to twisted-pair conductors, 75-ohm coaxial cable can also be uto provide connection to the office repeater or line terminating unit (LTU

To manufacture cables of lengths different than those of the standard caprovided, (to manufacture cables of lengths different than those of the standard cables provided, see the "Non-standard cables" section of thispractice.)

See Figure 36, Figure 37, Figure 38, and Figure 39 for half-group and single-group cabling arrangements applying to Meridian 1 system option51/51C, 61/61C and SL-1 NT; also, refer to Table 29.

553-2901-201 Standard 5.0 June 1999

PRI and clock controller installation: 51/51C, 61/61C and NT Page 127 of 222


Figure 36Half-group cabling for the 51/51C, 61/61C and NT, without echo canceller

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

2Mb/sstream

RS-232

NT8D72AAPRI Card


No connection

No connection

No connection

QCAD328A

NT8D85AB

NT8D7205 repeater(Note 2)




553-1389

J3

J2

J1

QPC471Clock

Controller0

J2QPC757

DCHI

J2Network

Card

DS-1Cross-Connect

Terminal




Figure 37Half group cabling for the 51/51C, 61/61C and NT, with echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232


reference)QCAD130

No connection

No connection

QCAD328A orNTND26

QCAD124

QCAD133

RS232QCAD129


(Note 2)Cabinet

I/O Panel (Note 1)

CabinetI/O Panel

22 AWG ABAM



553-1390

J3

J2

J1

QPC471Clock

Controller0

J2QPC757

orNT6D80

J2

T1

RS232

QPC414(Note 3)

DS-1Cross-Connect

Terminal

553-2901-201 Standard 5.0 June 1999



Figure 38Single-group cabling for the 51/51C, 61/61C and NT, without echo canceller

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

2Mb/sstream

RS-232

NT8D72AAPRI Card


NT8D79AA

No connection

QCAD328A

QCAD125

NT8D85AB

NT8D7205NT8D7207 repeater(Note 2)

CabinetI/O Panel

(Note 1)



553-1391

J3

J2

J1

QPC775Clock

Controller0

J3

J2

J1

QPC775Clock

Controller0

J2 QPC757DCHI

J2 NetworkCard

DS-1Cross-Connect

Terminal




Figure 39Single group cabling for the 51/51C, 61/61C and NT, with echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232


reference)QCAD130

QCAD130

QCAD328A orNTND26

QCAD124

QCAD133

RS232QCAD129


(Note 2)Cabinet

I/O Panel (Note 1)

CabinetI/O Panel

22 AWG ABAM



553-1392

J3

J2

J1

QPC471Clock

Controller0

J3

J2

J1

QPC471Clock

Controller0

J2QPC757

orNT6D80

J2

T1

RS232

QPC414(Note 3)

DS-1Cross-Connect

Terminal

553-2901-201 Standard 5.0 June 1999



Table 29Cabling for the 51/51C, 61/61C and NT

Cable From Des Con To Des Con To

NTND26 PRI card J5 MSDL X11 release 18 and later





For single-group only:





QCAD125 Clock controller

CC-0 J3 Clock controller

CC-1 J3 Clock Controller back-up.

NT8D85AB PRI card J3 Network Run directly to Network pack.

QCAD328A PRI card J2 DCHI J2 Run directly to DCHI card.

NTND26 PRI card J5 MSDL X11 release 18 and later

NT8D7207 PRI card J4 I/O Panel

RS-232 I/O Panel Echo canceller

RS-232 PRI card J6 Echo canceller



I).


Note: No additional cabling is required for multiple PRIs. The D-channel is associated through software in Overlay 17 (prompt PR

NT8D7205 I/O Panel cross connect

Run via cabinet I/O panel to cross-connect terminal from switch.

Cable From Des Con To Des Con To

553-2901-201 Standard 5.0 June 1999


L-1 ings.

ld


Switch settingsFigure 40 shows the NT8D72AA, NT8D72AB, and NT8D72BA PRI dip switch settings for Meridian 1 system options 51/51C, 61/61C and the Ssystem NT. Table 30 indicates the Transmission equalization switch sett

Figure 40NT8D72AA, NT8D72AB, NT8D72BA PRI dip switch settings for the 51/51C, 61/61C and NT


75

75

ohm switch setting

ohm switch setting

OR

S1 S2

S1 S2 S1 S2

S1 S2

OR



OFF

ON

OFF

ON

OFF

ON

OFF

ON1 2

1 2

1 2

1 2

NT8D72AA, NT8D72AB

NT8D72BA

553-7533




Table 30NT8D72AA, NT8D72AB, NT8D72BA PRI transmission equalization switch settings for the 51/51C, 61/61C and NT

Switch S2 settings To repeatered facility To cross-connect point

5 on

2, 4, 6 on

1, 3, 7 on

0 - 45 m(0 - 150 ft)

46 - 135 m(151 - 450 ft)

136 - 225 m(451 - 750 ft)

0 - 30 m(0 - 100 ft)

31 - 100 m(101 - 355 ft)

101 - 200 m(356 - 655 ft)






553-2901-201 Standard 5.0 June 1999



Installing the NT8D72AA, NT8D72AB, NT8D72BA PRI

Procedure 8Installing the NT8D72AA, NT8D72AB, NT8D72BA PRI in the 51/51C, 61/61C and NT

Step Action

1 Determine the cabinet and shelf location of the circuit pack to be installed.


System Shelf Slot

NT Network (LH) QSD39 5—12Network (RH) QSD40 5—10

51 and 61 NT6D39 CPU/Network Module 3—7




The dip switch, S1, NT8D72AB and NT8D72BA can accommodate either 75 or 120 ohms (the 120 ohm setting is the default setting). Refer to Figure 40 for the dip switch positions.

4 Install PRI circuit pack into the assigned shelf and slot.



7 Run and connect PRI cables. See Figure 36, Figure 37, Figure 38, and Figure 39; also, refer to Table 30.

CAUTION

The NT8D79AA cable connecting the Clock Controller and a PRI card must NOT be routed through the center of the cabinet past the power harness. Instead, it should be routed around the outside of the equipment shelves

8 If required, install connecting blocks at MDF or wall-mounted cross-connect terminal.




9 If required, designate connecting blocks at MDF or wall-mounted cross-connect terminal.



12 Add related office data into switch memory. Refer to the work order and International PRI Feature description and administration (553-2901-301).

13 Run PRI status check. Refer to International ISDN PRI Maintenance (553-2901-501) for the PRI verification tests, PRI self-test, PRI status check, and PRI start-up test.

Procedure 8Installing the NT8D72AA, NT8D72AB, NT8D72BA PRI in the 51/51C, 61/61C and NT

553-2901-201 Standard 5.0 June 1999



Installing or replacing the Clock Controller: half-group


Procedure 9Installing the Clock Controller in 51/51C, 61/61C, NT half-group




System Shelf Slot

NT Network (LH) QSD39 13Network (RH) QSD40 2

51 and 61 NT6D39 CPU/Network Module 9




QPC775 SW2 13SW3 2SW4 (1, 2) 9



5 If replacing an existing Clock Controller card, make sure the existing card is software disabled, using Overlay 60.






The Clock Controller status display in this mode will indicate NO UART (no universal async receiver transmitter).

This is normal, however, do not perform a clock status check when receiving this code.


9 Run and connect cables See Figure 36, Figure 37, Figure 38, and Figure 39; also, refer to Table 30.


If available, connect Secondary reference to J1.







Procedure 9Installing the Clock Controller in 51/51C, 61/61C, NT half-group

553-2901-201 Standard 5.0 June 1999



Installing the Clock Controller in the 51/51C, 61/61C, NT: single-group


CAUTIONIf CC-0 is to be replaced, CC-1 and CPU-1 must be active.

Similarly, if CC-1 is to be replaced, CC-0 and CPU-0 must be active.

Procedure 10Installing the Clock Controller in 51/51C, 61/61C, NT single-group






QPC775 SW2 13SW3 2SW4 (1, 2) 9






5 If replacing an existing Clock Controller card, make sure the existing card is software disabled, using Overlay 60.



The Clock Controller status display in this mode will indicate NO UART (no universal async receiver transmitter).

This is normal, however, do not perform a clock status check when receiving this code.


9 Run and connect cables See Figure 36, Figure 37, Figure 38, and Figure 39; also, refer to Table 30.


If available, connect Secondary reference to J1.





553-2901-201 Standard 5.0 June 1999



Removing the NT8D72AB, NT8D72BA PRI

Procedure 11Removing the NT8D72AB, NT8D72BA PRI in the 51/51C, 61/61C and NT

Step Action


2 If the circuit pack is being completely removed, not replaced, remove data from memory. See the International PRI Administration document (553-2901-301).

3 Determine the cabinet and shelf location of the circuit packs to be removed.


5 Tag and disconnect cables from pack. Rearrange Clock Controller pack cables if required.

6 Remove PRI and Network circuit packs.

Note: If the other circuit of a dual Network pack is in use, do NOT remove the Network pack.

7 Pack and store circuit pack.

553-2901-201 Standard 5.0 June 1999


ards n-


Installing an additional Network shelfThis procedure is used when additional shelf space is required for PRI cin SL-1 or NT switches. A QUD15 cooling unit is required for each additioal shelf installed.

CAUTIONDo not place the circuit packs in the shelf until Step 7 is completed.




Procedure 12Installing an additional Network shelf in the 51/51C, 61/61C, NT

Step Action

1 Determine the cabinet and shelf location of the Network shelf to be installed.

2 Unpack and inspect the shelf.

3 Remove the existing left or right rear Peripheral Equipment (PE) shelf (if required).

4 Install the additional Network shelf in the PE (Step 3) location.

5 Install a QUD15 cooling unit directly below the Network shelf and secure with four mounting screws.

6 Install and connect the QCAD172A power cable to the added QUD15 cooling unit as follows:

If the added QUD15 is located below the left Network shelf, unplug the C11 connector from the QCAD111 power harness that connects to the existing left side QUD15.

If the added QUD15 is located below the right Network shelf, unplug the C21 connector from the QCAD111 power harness instead of the C11.

— Plug the C11 or C21 connector into the single-ended connector of the QCAD172A power cable.

— Plug one of the two connectors at the other end of the C11 or C21 connector that was removed.

— Plug the remaining connector of the QCAD172A power cable into the added QUD15.

7 At the QCAD111 power wiring harness, untie and then connect:

— the C17 power connection cable to the right rear Network shelf

— the C19 power connection cable to the left rear Network shelf

8 Install PRI trunks and enter related shelf and PRI office data into switch memory.

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PRI and clock controller installation: 71 and XT


PRI circuit pack locationsThe PRI circuit pack occupies two adjacent slots on a shelf. As many as tcircuit packs can be plugged into an empty Network shelf, along with a PoConverter circuit pack. Specific locations will depend on available space

Note: Due to physical width, Bus Terminating Units (BTUs) and PRIcannot fit next to each other on a shelf.

When no vacant positions are available to install PRI packs, additional Network shelves can replace Peripheral Equipment shelves located on trear of the Common Equipment or Disk shelves.

If an additional cabinet is required to install more Network shelves, use aQPC108 cabinet with Meridian 1 system option 71 or the SL-1 XT.

Cable requirementsShielded 22 AWG (0.644 mm) cables NT8D7205 and NT8D7207 are recommended for connecting the PRI to the cross-connect point. Thesecables consists of two twisted-pair conductors.

The transmit and the receive pairs must be enclosed in a polyvinyl jackeThis type of cable is commonly referred to as "6-conductor" cable. The cashould be grounded at the cross-connect point.


of 222 PRI and clock controller installation: 71 and XT

sed ).

bles


In addition to twisted-pair conductors, 75-ohm coaxial cable can also be uto provide connection to the office repeater or line terminating unit (LTU

To manufacture cables of lengths different than those of the standard caprovided, see Section 9 of this practice.

See Figure 41 and Figure 42 for cabling arrangements applying to Meridian 1 system option 71 and the SL-1 XT; also refer to Table 31.

553-2901-201 Standard 5.0 June 1999

PRI and clock controller installation: 71 and XT Page 147 of 222


Figure 4171, XT cabling without echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232

PRI Card(Primary

reference)NT8D79AA

NT8D79AA

No connection

QCAD328A to DCHI orNTND26 to MSDL

NT8D85AB

NT8D7205NT8D7207 LD-1(Note 2)




553-7364

J3

J2

J1

QPC471Clock

Controller0

J3

J2

J1

QPC471Clock

Controller0

J2 DCHI

SCG0

SCG1QPC417Junctor

QCAD110

J2QPC414(Note 3)

DS-1Cross-Connect

Terminal




Figure 4271, XT cabling with echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232

PRI Card(Primary

reference)NT8D79AA

NT8D79AA


NT8D85AB

QCAD133

RS232QCAD129

Echo Canceller

NT8D7207 LD-1(Note 2)

CabinetI/O Panel (Note 1)

CabinetI/O Panel

22 AWG ABAM



553-7365

J3

J2

J1

QPC471Clock

Controller0

J3

J2

J1

QPC471Clock

Controller0

J2 DCHI

SCG0

SCG1QPC417Junctor

QCAD110

J2

T1

RS232

QPC414(Note 3)

DS-1Cross-Connect

Terminal

553-2901-201 Standard 5.0 June 1999



Table 31Cable connections and destinations for 71, XT

Cable From Des. Con. To Des. Con. Notes









QCAD328A PRI card J2 DCHI J2


QCAD124 PRI card J3 Network

QCAD328A PRI card J2 DCHI card J2


QCAD110 CC-0 J3 Network card

JCTR J11 Multi-group junctor board connection.

QCAD110 CC-1 J3 Network card

JCTR J12

NT8D85AB PRI card J3 Network Run to connector on Network pack.

NT8D7207 PRI card J4 I/O Panel Run directly to DCHI card.

NT8D7205 I/O Panel cross connect

From I/O to cross connect

RS-232 I/O Panel Echo Canceller



.

ld


Dip switch settings Figure 43 shows the NT8D72AA, NT8D72AB, and NT8D72BA PRI dip switch settings for Meridian 1 system option 71, and the SL-1 system XTTable 32 indicates the Transmission equalization switch settings.

Figure 43NT8D72AA, NT8D72AB, NT8D72BA PRI dip switch settings for the 71 and XT


75

75

ohm switch setting

ohm switch setting

OR

S1 S2

S1 S2 S1 S2

S1 S2

OR



OFF

ON

OFF

ON

OFF

ON

OFF

ON1 2

1 2

1 2

1 2

NT8D72AA, NT8D72AB

NT8D72BA

553-7533

553-2901-201 Standard 5.0 June 1999



Table 32NT8D72AA/AB, NT8D72BA PRI transmission equalization switch settings for the 71 and XT


5 on

2, 4, 6 on

1, 3, 7 on

0 - 45 m(0 - 150 ft)

46 - 135 m(151 - 450 ft)

136 - 225 m(451 - 750 ft)

0 - 30 m(0 - 100 ft)

31 - 100 m(101 - 355 ft)

101 - 200 m(356 - 655 ft)









Installing the NT8D72AA/AB, NT8D72BA PRI

Procedure 13Installing the NT8D72AA/AB, NT8D72BA PRI in the 71 or XT

Step Action



System Shelf Slot

XT Network (LH) QSD39 5—12Network (RH) QSD40 5—10

71 NT6D39 CPU/Network 3—7Module




The dip switch, S1, on the NT8D72AA/AB and NT8D72BA can accommodate either 75 or 120 ohms (the 120 ohm setting is the default setting). Refer to Figure 43 for the dip switch positions.

CAUTIONThe NT8D79AA cable connecting the Clock Controller and PRI card must NOT be routed through the center of the cabinet past the power harness. Instead, it should be routed around the outside of the equipment shelves.

553-2901-201 Standard 5.0 June 1999


I.


Note: No additional cabling is required for multiple PRIs. The D-channel is associated through software in Overlay 17, prompt PR

4 Install PRI circuit pack into the assigned shelf and slot.



7 Run and connect PRI cables. See Figure 41 and Figure 42; also, refer to Table 31.





12 Run PRI Verification Test.


Procedure 13Installing the NT8D72AA/AB, NT8D72BA PRI in the 71 or XT

Step Action




Removing the NT8D72AA/AB, NT8D72BA PRI

Procedure 14Removing the NT8D72AB, NT8D72BA PRI in the 71 or XT

Step Action


2 If the circuit pack is being completely removed, not replaced, remove data from memory. See the International PRI Feature description and administration (553-2901-301).

3 Determine the cabinet and shelf location of the circuit packs to be removed.

4 Remove cross connections at MDF or wall-mounted cross-connect terminal.

5 Tag and disconnect cables from pack. Rearrange Clock Controller packcables if required.

6 Remove PRI and Network circuit packs.

Note: If the other circuit of a dual Network pack is in use, DO NOT removethe Network pack.

7 Pack and store circuit pack.

553-2901-201 Standard 5.0 June 1999


ed,


Installing the Clock Controller


CAUTIONIf CC-0 is to be replaced, CC-1 and CPU-1 must be active. Similarly, if CC-1 is to be replacCC-0 and CPU-0 must be active.

Procedure 15 - Installing the Clock Controller


1 Determine the cabinet and shelf location of the circuit packs to be installed.


System Shelf Slot

XT Common Equipment 14

71 CPU Module 15 or 16(8—12 if no SBE)


3 Set option switches and insert option plugs on the Clock Controller being added.


QPC775 SW2 OFFSW3 OFFSW4 (1, 2) ON




r


4 For the QPC441 3PE cards in Network Shelves housing Clock Controller cards:

In the QSD39 (left-hand shelf) — set option switch position 2 to OFF.

In the QSD40 (right-hand shelf) — set option switch position 2 to ON.


6 When replacing an existing Clock Controller card, make sure the existing card is disabled, using Overlay 60.

Note: ERR20 messages may be generated. These can usually be ignored. However, excessive switching should be avoided, especially when counters are near the maintenance or out-of-service thresholds.

Excessive switching could generate threshold-exceeded messages or cause the PRI to be automatically disabled.

7 Check the counters in Overlay 60. If necessary, reset the counters using the RCNT command.

8 When replacing an existing System Clock Generator (SCG) card, make sure it is disabled using Overlay 39.


If the faceplate switch of any Clock Controller is set to DISABLE, the other Clock Controller will become active.

CAUTIONCall processing will cease if both Clock Controller cards are DISABLED, whetherin software or via the faceplate switch, regardless of whether the Clock Controlleto Junctor Board is connected or not.



553-2901-201 Standard 5.0 June 1999



10 Disconnect cables from SCG card or Clock Controller card.

If the cable connecting a Clock Controller to the Junctor board is disconnected, the Clock Controller card in the active CPU shelf will be active.

The clock status display will indicate NO UART (no universal async receiver transmitter). This is normal, however, do not perform a clock status check when receiving this code.

If the message appears repeatedly, check the cable going from the Clock Controller to the Junctor board.

11 Remove Clock Controller card from shelf. The switch will operate with only one Clock Controller if it is in the active CPU shelf.

CAUTIONIf the Clock Controller card in the active CPU shelf is removed, the other card cannot become active and call processing will cease.


13 Run and connect cables (see Figure 41 and Figure 42):

Connect cable to faceplate connector J3 of the Clock Controller.

Connect primary reference to J2.

If available, connect secondary reference to J1.


15 Turn off DISABLE LED using LD 60 and the ENL command.







17 To install second card, first switch the CPU, using Overlay 35. Then repeat steps 2 to 15.

The switch will operate with only one Clock Controller if it is in the active CPU shelf.






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sed

ided,


PRI and clock controller installation: 81/81C


PRI circuit card locationsEach PRI circuit card requires two adjacent slots on a shelf. As many ascircuit cards can be plugged into an empty network shelf, along with the Power converter card, depending on the shelf type.

Cable requirementsShielded 22 AWG (0.644 mm) cable is recommended for connecting the to the cross-connect point. This cable consists of two shielded twisted-pconductors and two shields.

The transmit and the receive pairs must be individually shielded and encloin a polyvinyl jacket. This type of cable is commonly referred to as "6-conductor" cable. T1 cable shielding should be grounded at the cross-connect point.

To manufacture cables of different lengths than the standard cables provrefer to the "Non-standard cables" section at the end of this document.


of 222 PRI and clock controller installation: 81/81C


Figure 44Option 81/81C cabling without echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232

PRI Card(Primary

reference)QCAD130

QCAD130

No connection


QCAD124

QCAD133QCAD128 LD-1(Note 2)


DS-1Cross-Connect

Terminal



553-7366

J3

J2

J1

QPC471Clock

Controller0

J3

J2

J1

QPC471Clock

Controller0

J2 DCHI

SCG0

SCG1QPC417Junctor

QCAD110

J2QPC414(Note 3)

553-2901-201 Standard 5.0 June 1999

PRI and clock controller installation: 81/81C Page 161 of 222


Figure 4581/81C cabling with echo canceller

CentralOffice

J1

J2

J5

J3

J4

J6

REF1

REF2

D-CH

LOOP

T1

RS232

PRI Card(Primary

reference)QCAD130

QCAD130


QCAD124



553-7367

J3

J2

J1

QPC471Clock

Controller0

J3

J2

J1

QPC471Clock

Controller0

J2 DCHI

SCG0

SCG1QPC417Junctor

QCAD110

J2QPC414(Note 3)

QCAD133

RS232QCAD129

Echo Canceller

NT8D7207 LD-1(Note 2)

CabinetI/O Panel (Note 1)

CabinetI/O Panel

22 AWG ABAM

T1

RS232

DS-1Cross-Connect

Terminal




Table 33Cable connections and destinations for 81/81C

Cable From Des. Con. To Des. Con. Notes

QCAD130 PRI card J1 Clock controller

CC-0 1


CC-0 2


CC-1 1


CC-1 2


CC-0 J3 Junctor board JCTR J11 3


CC-1 J3 Junctor board JCTR J12

QCAD124 PRI card J3 Network 4

QCAD328A PRI card J5 DCHI card J2 5


QCAD128 PRI card J4 I/O Panel 6

QCAD133 I/O Panel Patch Panel 6

QCAD129 PRI card J6 I/O Panel 6

RS-232 I/O Panel Echo Canceller

RS-232 PRI card J6 Echo Canceller 7

QCAD133 PRI card J4 Patch Panel 7

RS-232 PRI card J6 Echo Canceller 7

553-2901-201 Standard 5.0 June 1999



Note 1: Only when primary clock source.

Note 2: Only when secondary clock source.

Note 3: Multi-group junctor board connection.

Note 4: Run to connector on network pack.

Note 5: Run directly to DCHI card.

Note 6: Run by means of cabinet I/O panel to CSU, echo canceller, or cross connect terminal.

Note 7: Run by means of cabinet I/O panel to cross-connect terminal or echo canceller from non shielded system.

Note 8: No additional cabling is required for multiple PRIs. The D-channel is associated through software in LD17, prompt PRI.



the

ld


Switch settings Figure 46 shows the NT8D72AA, NT8D72AB, and NT8D72BA PRI dip switch settings for Meridian 1 system option 81/81C. Table 34 indicates Transmission equalization switch settings.

Figure 46NT8D72AA, NT8D72AB, NT8D72BA PRI dip switch settings for the 81/81C


75

75

ohm switch setting

ohm switch setting

OR

S1 S2

S1 S2 S1 S2

S1 S2

OR



OFF

ON

OFF

ON

OFF

ON

OFF

ON1 2

1 2

1 2

1 2

NT8D72AA, NT8D72AB

NT8D72BA

553-7533

553-2901-201 Standard 5.0 June 1999



Table 34NT8D72AA/AB, NT8D72BA PRI transmission equalization switch settings, 81/81C


5 on

2, 4, 6 on

1, 3, 7 on

0 - 45 m(0 - 150 ft)

46 - 135 m(151 - 450 ft)

136 - 225 m(451 - 750 ft)

0 - 30 m(0 - 100 ft)

31 - 100 m(101 - 355 ft)

101 - 200 m(356 - 655 ft)








I


Installing the NT8D72AB, NT8D72BA PRIThis procedure describes how to install the NT8D72AB, NT8D72BA PRcard in a Meridian 1 system option 81.

Procedure 16Installing the NT8D72AB, NT8D72BA PRI in an 81

1 Determine the location of the circuit card to be installed. The following slots can be used if they are not required for other cards.

2 Unpack and inspect circuit cards.

3 Set option switches on the PRI circuit card.

4 Install PRI circuit card in the assigned shelf and slot.

5 Install network circuit card (if no network loop connection is available).


7 Run and connect the PRI cables. Figures 44 and 45 show the 81 PRI cabling. Refer also to Table 34.



10 If required, install CSU or echo canceller.


12 Add related office data into system memory. Refer to the work order.

13 Run PRI Verification Tests.

Shelf Slot

Core 0-3

Network Module 5-9, 13-14

RPE 1, 11, 12

553-2901-201 Standard 5.0 June 1999


m


Installing the Clock ControllerNote: When installing a clock controller, you must replace the SysteClock Generator (SCG, QPC411).

Procedure 17Installing the QPC775 Clock Controller in the 81

1 Determine the location of the Clock Controller card to be installed.

2 Unpack and inspect circuit card.

3 Set option switches and insert option plugs on the Clock Controller.


5 Install Clock Controller in the selected slot.

6 Run and connect cables• Connect Primary reference to J2.• If available, connect Secondary reference to J1.


8 Set error detection thresholds and clock synchronization controls in LD 73.

9 In LD 60 enable the clock controller with by entering ENL CC x.

CAUTIONDo not deviate from this procedure. Deviation does not cause the system to SYSLOAD or initialize, but does stop call processing.

Shelf Slot

Core 6

SW2 SW3 SW4

off off on



ode


10 To track on a primary or secondary reference clock, use LD60. The command follows.


Tracking on a reference clockThe Clock Controller, when enabled, is in free run mode. It stays in this mfor several minutes before being switched to tracking mode.

553-2901-201 Standard 5.0 June 1999



Replacing the Clock Controller

Procedure 18Installing the QPC775 Clock Controller in the 81

1 Determine the location of the circuit card to be installed. See Tables 28 and 30.

2 Unpack and inspect circuit card.



5 Make sure the existing card is software disabled, using LD 60.

6 On the Clock Controller being removed, set the faceplate toggle switch to DISABLE.

7 Disconnect cables from Clock Controller card and remove card from the shelf. The Clock Controller status display in this mode indicates NO UART (no universal asynchronous receiver transmitter). This is normal; however, do not perform a clock status check when receiving this code.


9 Run and connect cables• Connect Primary reference to J2.• If available, connect Secondary reference to J1.


11 In LD60 enable the clock controller with by entering ENL CC x.

12 To track on a primary or secondary reference clock, use LD60. The command follows.TRCK PCK (for Primary)

SCLK (for Secondary)FRUN (for Free-Run)

CAUTIONDo not deviate from this procedure. Deviation does not cause the system to SYSLOAD or initialize, but does stop call processing.




553-2901-201 Standard 5.0 June 1999

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178

n s


NTCK43 Dual-port PRI2 installation and removal

This section contains information required to install the NTCK43 DPRI oMeridian 1 system options 51/51C, 61/61C, 71, 81/81C and SL-1 systemST/STE, NT and XT.

For installation and removal procedures pertaining to the NTBK51AA Downloadable D-Channel daughterboard, please refer to the section “NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97” on page 103.


of 222 NTCK43 Dual-port PRI2 installation and removal

an


Setting up the NTCK43NTCK43 circuit pack locations

Each NTCK43 DPRI circuit pack requires 1 slot on a shelf. DPRI packs cbe placed in any network slot.

NTCK43 switch settingsFigure 47 depicts the NTCK43 DPRI switch settings.

Figure 47NTCK43 switch settings

553-7368

LEDs

P1

P2 S4

S1

S3 S2

S6

S5

P3

DDCHDaughterboard

Switch Convention:ON: Towards the FaceplateOFF: Away from the Faceplate

P4P11

P9

P5

553-2901-201 Standard 5.0 June 1999

NTCK43 Dual-port PRI2 installation and removal Page 173 of 222

l the

efer

s:

ings.


The NTCK43 DPRI pack has 6 switches, namely S1 to S6. These controfollowing functions:

S1: Faceplate SwitchS1 is the Faceplate Switch and corresponds to the ENET enable switch. Rto Table 35.

S2: Clock Controller Functions

Note: Switches S2 to S6 follow the convention for ON/OFF as follow

ON is Towards the Faceplate.

OFF is Away from Faceplate.

Four options are available. Table S2 gives a summary of the switch sett

Note: S2(3-4) are not presently used.

Table 35Faceplate switch setting - S1

Switch UP DOWN

S1 Dual PRI Enabled Dual PRI Disabled

Table 36Clock Controller settings - S2

S2-1 S2-2 Clock Options

OFF OFF Option 1

OFF ON Option 2

ON OFF Option 3

ON ON Option 4



t set PRI.

of he not m

) in 8 nge

not t on

S3

s S3


S3: On-board DDCH address switchThis switch sets the address of the DDCH daughtercard only. It does nothe address of external D Channel handlers which are used with the DualIf external D Channel handlers are used then their address is set on theexternal DCHI card itself.

This address corresponds to the DNUM (0-15) that is assigned to Unit 0the DDCH during configuration. As a DDCH has 2 D Channels it is half tcapacity of the MSDL but then it does not take up a cardslot. Address 0 isnormally assigned to the DDCH as it is commonly assigned to the SysteTerminal TTY0.

The DDCH Address (0-15) is set on S3 lower 8 switch positions, S3 (1-8Binary format, i.e. S3-1 is the Least Significant Bit. Thus S3 positions 5-will be always ON (towards the faceplate). DDCH address can be in the rabinary 0000 (Zero) to 1111 (Fifteen).

If the DDCH is not installed then the address set on the S3 switch does matter. However if the DDCH is installed but not used then the address seS3 should not conflict with any other DCHI address.

Note: S3 (9-10) are not used and are spare.

Note: The DDCH Address is set by setting the relevant positions of to OFF.

Example 1: Setting up an address (DNUM) of "15" for the DDCH requireswitch S3 positions 1, 2, 3 & 4 away from the Faceplate (OFF) and settingpositions 5-8 towards the Faceplate (ON).

Example 2: Setting up an address (DNUM) of "9" for the DDCH requiresswitch S3 positions 1 & 4 away from the Faceplate (OFF) and setting S3positions 2,3, 5-8 towards the Faceplate (ON).

Table 37 gives a summary of the S3 on-board switch functions.

553-2901-201 Standard 5.0 June 1999


ll NT

d in ings.


Table 37Summary of on-board DDCH switch functions - S3

Note: S7 is not used with the DDCH daughter board (NTBK51) so aS7 switches should be set to “OFF” deactivating address matching inaddressing mode.

S3 AND S7: On-board NTAG54 address switch settings These switches reside on the NTAG54AA daughterboard, used for DASS2/DPNSS1 applications.

S4: Tx/Rx grounding optionsSwitch S4 provides the option to connect Frame Ground (FGND) to the carrier cable shield of the receive and / or transmit pair. This option is useSome 75 Ohm applications. Table 38 gives a summary of the switch sett

For 120 Ohm applications S4 (1-4) are set to OFF.

Switch ON OFF

S3-(1-8) - DDCH address

S3-9 Spare Spare

S3-10 Spare Spare



ided a



S5-6: Impedance matchingCCITT recommendations provide options for the use of either 75 Ohm coaxial or 120 Ohm twisted pair cable. Both of these impedances are provby the line interface. The impedance is switch selectable. Table 39 givessummary of the switch settings.


Switch ON OFF

(Switch closed) (Switch open)

S4-1 PRI 0 Rx Shield Grounded

PRI 0 Rx Shield Open

S4-2 PRI 0 Tx Shield Grounded

PRI 0 Tx Shield Open

S4-3 PRI 1 Rx Shield Grounded

PRI 1 Rx Shield Open

S4-4 PRI 1 Tx Shield Grounded

PRI 1 Tx Shield Open

Switch ON OFF

S6 (PRI unit 0) 75 ohm 120 ohm

S5 (PRI unit 1) 75 ohm 120 ohm

553-2901-201 Standard 5.0 June 1999


fore to


Installing the NTCK43 DPRICAUTION

The static discharge bracelet located inside the cabinet must be worn behandling circuit cards. Failure to wear the bracelet can result in damagethe circuit cards.

1 Determine the cabinet and shelf location where the Dual PRI is to be installed. The Dual PRI can be installed in any Network slot.


3 Set the option switches on the DPRI circuit pack before installation. Refer to “NTCK43 switch settings” on page 172.

S1 (faceplate switch) must be OFF when installing the Dual PRI otherwise an M1 Initialize may occur. S1 on the Dual PRI corresponds to the faceplate switch on the QPC414 Network pack.

4 Install DPRI circuit pack in the assigned shelf and slot.

The faceplate LEDs should flash 3 times.

Enable faceplate switch S1. This is the "Loop Enable" switch.


6 Run and connect the DPRI cables (refer to the 'Cabling requirements' section if required).




10 Run PRI Verification Test.

11 Add related office data into switch memory. Refer to the work order and International PRA Administration (553-2901-301).

12 Run PRA status check. Refer to International ISDN Primary Rate Access DPRI Maintenance (553-2901-501) for the PRA verification tests, DPRI self-test, PRA status check, and PRA start-up test.




553-2901-201 Standard 5.0 June 1999

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192

rt 71,

le H


NT5D97 Dual-port DTI2/PRI2 installation and removal

This section contains information required to install the NT5D97 Dual-poDTI2/PRI2 (DDP2) card on Meridian 1 Options 21/21E, 51/51C, 61/61C, and 81/81C, and Meridian SL-1 STE, RT, XT, and NT systems.

For installation and removal procedures for the NTBK51AA DownloadabD-Channel daughterboard, please refer to the section “NTBK51AA DDCInstallation and Removal for the NTCK43 and NT5D97” on page 103.


of 222 NT5D97 Dual-port DTI2/PRI2 installation and removal

e


DDP2 circuit card locationsEach DDP2 circuit card requires one slot on a shelf. DDP2 cards can beplaced in any card slot in the network bus.

Port definitionsSince the DDP2 card is dual-card, it equips two ports; these ports may bdefined in the following combinations:

Port 0 Port 1

DTI2 DTI2

Not configured DTI2

DTI2 Not configured

PRI2 PRI2

Not configured PRI2

PRI2 Not configured

DTI2 PRI2

PRI2 DTI2

553-2901-201 Standard 5.0 June 1999

NT5D97 Dual-port DTI2/PRI2 installation and removal Page 181 of 222

ital

gle

the p

ved

l nks

ch

d, 2


Replacement of a digital trunk (NT8D72BA/QPC536E) by a DDP2 card, case scenarios

The following discussion describes possible scenarios when replacing adigital trunk NT8D72BA PRI2 card or QPC536E DTI2 card configurationwith a NT5D97 DDP2 card configuration.

Case 1 - The two ports of a QPC414 network card are connected to two digtrunks.

In this case, the QPC414 and the two digital trunks are replaced by a sinDDP2 card, which is plugged into the network shelf in the QPC414 slot.

Case 2 - One port of the QPC414 card is connected to a digital trunk, andsecond is connected to a peripheral buffer. Both cards are in network loolocation.

In this case, the QPC414 should not be removed. The digital trunk is remoand the DDP2 card is plugged into one of the two empty slots.

Case 3 - The network shelf is full, one port of a QPC414 network card is connected to a digital trunk, and the second is connected to a peripherabuffer. This arrangement is repeated for another QPC414. The digital truare located in a shelf that provides only power.

In this case, the peripheral buffers will have to be re-assigned, so that eapair of buffers will use both ports of the same QPC414 card. The other QPC414 card may then be replaced by the NT5D97 DDP2.

Note in all cases - If an NT8D72BA card is being replaced by a DDP2 carthe D-Channel Handler or MSDL may be either reconnected to the DDPcard, or removed if an onboard NTBK51AA DDCH card is used.



or he nd

ters. fault

hes.

ard .

e


DDP2 switch settingsThe the NT5D97 DDP2 card is equipped with 6x2 sets of DIP switches ftrunk parameters settings for port0 and port1 respectively. Additionally, tDDP2 card is equipped with one set of four DIP switches for the Ring Grousetting and one set of eight DIP switches for the D-Channel Handler parameters setting.

The DIP switches are used for setting of default values of certain parameThe general purpose switches are read by the firmware which sets the devalues accordingly.

The parameters as shown in the tables that follow are set by the DIP switcFactory setups are shown in bold.

Note: There is no switch setting required to select between the on-boNTBK51AA D-Channel daughterboard, and an external DCHI/MSDLThe NT5D97 automatically detects when the on-board NTBK51AA D-Channel daughterboard is used.

Trunk interface switchesImpedance level and unit modeThe S9/S15 switch selects the impedance level and loop operation mod(DTI2 or PRI2). Refer to Table 40.

Table 40Impedance level and loop mode switch settings

Switch Description S9/S15 Switch Setting

1 Impedance level OFF - 120 ohmON - 75 ohm

2 Spare

3 Spare

4 Unit mode OFF - loop operates in the DTI2 modeON - loop operates in the PRI2 mode

553-2901-201 Standard 5.0 June 1999


ce

s the


Transmission modeA per trunk switch (S4/S10) provides selection of the digital trunk interfatype. Refer to Table 41.

Note: This setup should not be changed.

Table 41Impedance level and loop mode switch settings

Line Build OutA per trunk set of three switches (S5/S11, S6/S12, and S7/S13) providedB value for the line build out. Refer to Table 42.

Note: This setup should not be changed.

Table 42Trunk interface line build out switch settings

Description S4/S10 Switch Setting

E1 OFF

Not used

Description Switch Setting

S5/S11 S6/S12 S7/S13

0 dB OFF OFF OFF



75

o


Receiver ImpedanceA per trunk set of four DIP switches (S8/S14) provides selection betweenor 120 Ω values. Refer to Table 43.

Table 43Trunk interface receiver impedance switch settings

Ring ground switchesA set of four DIP switches (S2) selects which Ring lines are connected tground. Refer to Table 44.

Table 44Ring ground switch settings

Description S8/S14 Switch Setting

75 Ω OFF OFF ON OFF

120 Ω OFF OFF OFF ON

Switch Description S2 Switch Setting

1 Trunk 0 Transmit OFF - Ring line is not grounded

ON - Ring line is grounded

2 Trunk 0 Receive OFF - Ring line is not grounded


3 Trunk 1 Transmit OFF - Ring line is not grounded


4 Trunk 1 Receive OFF - Ring line is not grounded


553-2901-201 Standard 5.0 June 1999


r

and he


On board DDCH address select switchesIn case of an on-board NTBK51AA D-Channel daughterboard, set of fouswitches (S3) provide the daughterboard address. Refer to Table 45.

Note: There is no switch setting required for switch 8 of S3 (S3-8) toselect between the on-board NTBK51AA D-Channel daughterboard, an external DCHI/MSDL. The NT5D97 automatically detects when ton-board NTBK51AA D-Channel daughterboard is used.

Table 45DCH mode and address select switch settings

Table 46 shows the possible selections of the NTBK51AA D-Channel daughterboard address.

Switch Description S3 Switch Setting

1-4 D-Channel daughterboard Address See Table 46

5-8 For future use. OFF




Refer to Figure 48 and Figure 49 for switch functional areas and defaultsettings.

Table 46NTBK51AA daughterboard address select switch settings

Device Address 1 Switch Setting

02 OFF OFF OFF OFF

1 ON OFF OFF OFF

2 OFF ON OFF OFF

3 ON ON OFF OFF

4 OFF OFF ON OFF

5 ON OFF ON OFF

6 OFF ON ON OFF

7 ON ON ON OFF

8 OFF OFF OFF ON

9 ON OFF OFF ON

10 OFF ON OFF ON

11 ON ON OFF ON

12 OFF OFF ON ON

13 ON OFF ON ON

14 OFF ON ON ON

15 ON ON ON ON

Note 1: The maximum number of DCHI, MSDL, and DDCH devices in the system is 16.

The Device Addresses are equivalent to the MSDL DNUM designations. For programming information on the MSDL, refer to NTPs 553-3001-195 and 553-3001-400.

Note 2: Device address 0 is commonly assigned to the System TTY0 Monitor.

553-2901-201 Standard 5.0 June 1999



Figure 48Switch functional areas

PORT 0 PORT 1

Ring Ground

1 2 3 4 5 6 7 8

1 2 3 41 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4Trunk Interface

Receiver Impedence

Line

Build out

Switches

Transmission Mode

DCH Mode and Address Select

553-7405

J5

J6

S3

S4S2 S10

S5 S11

S6 S12

S7 S13

S8 S14

S9 S15




Figure 49Switch default settings

1 2 3 4 5 6 7 8ON

1 2 3ON

41 2 3ON

4 1 2 3ON

4

1 2 3ON

4 1 2 3ON

4

1 2 3ON

4 1 2 3ON

4

1 2 3ON

4 1 2 3ON

4

1 2 3ON

4 1 2 3ON

4

1 2 3ON

4 1 2 3ON

4

553-7406

J5

J6

S3

S4S2 S10

S5 S11

S6 S12

S7 S13

S8 S14

S9 S15

553-2901-201 Standard 5.0 June 1999


it

und the


Installing the NT5D97 DDP2CAUTION


Step Action

1 Determine the cabinet and shelf location where the DDP2 is to be installed. The DDP2 can be installed in any card slot in the Network bus.

2 Unpack and inspect circuit cards and cables.

3 If a DDCH is to be installed, refer to the section “NTBK51AA DDCH Installation and Removal for the NTCK43 and NT5D97” on page 103.

4 Set the option switches on the DDP2 circuit card before installation. Refer to “DDP2 switch settings” on page 182.

The ENB/DIS (enable/disable faceplate switch) must be OFF (DIS) when installing the DDP2, otherwise a system initialize may occur. The ENB/DIS on the DDP2 corresponds to the faceplate switch on the QPC414 Network card.

5 Install DDP2 circuit card in the assigned shelf and slot.

6 Set the ENB/DIS faceplate switch to ON.

If the DDCH is installed, the DDCH LED should flash three times.

7 If required, install the I/O adapters in the I/O panel.

8 Run and connect the DDP2 cables. Refer to the section “Cabling requirements” on page 66 for cable lengths and attributes.

CAUTION

Clock Controller cables connecting the Clock Controller and DDP2 card must NOT be routed through the center of the cabinet past the power harness. Instead they should be routed arooutside of the equipment shelves.




9 If required, install connecting blocks at the MDF or wall mounted cross-connect terminal.

10 If required, designate connecting blocks at the MDF or wall mounted cross-connect terminal.

11 If required, install a Network Channel Terminating Equipment (NCTE). or Line Terminating Unit (LTU).

12 Add related office data into switch memory.

13 Enable faceplate switch S1. This is the “Loop Enable” switch.

The faceplate LEDs should go on for 4 seconds then go off and the OOS, DIS and ACT LEDs should go on again and stay on.

IF DDCH is installed, the DCH LED should flash 3 times.

14 Run PRI/DTI Verification Test. Refer to the ISDN PRI2 Maintenance NTP (553-2901-501).

15 Run PRI status check. Refer to the ISDN PRI2 Maintenance NTP (553-2901-501).

553-2901-201 Standard 5.0 June 1999


it

und the


Removing the NT5D97 DDP2CAUTION


Step Action

1 Determine the cabinet and shelf location of the DDP2 card to be removed.

2 Disable Network Loop using Overlay 60. The command is DISL “loop number.”

The associated DCHI may have to be disabled first. The faceplate switch ENB/DIS should not be disabled until both PRI2/DTI2 loops are disabled first.

3 If the DDP2 card is being completely removed, not replaced, remove data from memory. Refer to the International PRI Features Description and Administration NTP (553-2901-301).


5 Tag and disconnect cables from card.

6 Rearrange Clock Controller cables if required.

CAUTION

Clock Controller cables connecting the Clock Controller and DDP2 card must NOT be routed through the center of the cabinet past the power harness. Instead they should be routed arooutside of the equipment shelves.

7 Remove the DDP2 card only if both loops are disabled. If the other circuit of a DDP2 card is in use, DO NOT remove the card. The Faceplate switch ENB/DIS must be in the OFF (DIS) position before the card is removed, otherwise the system will initialize.

8 Pack and store the DDP2 card and circuit card.



ed

80

AA;

e d d

L the

,

e,


Configuring the NT5D97 DDP2After the NT5D97 DDP2 has been installed, the system may be configurusing the same procedures as for the standard NT8D72BA PRI2 and QPC536E DTI2 card. Refer to the International ISDN PRI2 Feature description and Administration NTP (553-2901-301).

Consider the following when configuring the NT5D97 DDP2 card:

— The Meridian 1 software allows four ports to be defined for the NT6DMSDL. The DDCH (NTBK51AA) card has only two ports, 0 and 1; therefore, ports 2 and 3 must not be defined when using the NTBK51

— Port 0 of the NTBK51AA can only be defined to work with Loop 0 of thNT5D97 DDP2 card, and Port 1 of the NTBK51AA can only be defineto work with Loop 1 of the NT5D97. This relationship must be reflectewhen configuring a new DCH in overlay 17 (in response to the DCHprompt, enter either 0 or 1 when specifying the loop number used byDCH);

— You cannot define one of the DDP2 loops for the NTBK51AA DDCHand the other loop for the NT6D11AF/NT5K75AA/NT5K35AA DCH card or the NT6D80 MSDL.

— When configuring the NT5D97 DDP2 in DTI2 outgoing dial pulse moda Digit Outpulsing patch is required.

553-2901-201 Standard 5.0 June 1999

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208

.

he

e


ISL installationISL configurations

The ISDN Signaling Link (ISL) is used on SL-1 to SL-1 PRA connectionsThe ISDN Signaling Link (ISL) feature operates in two modes:

Shared modeThe DCHI supports ISDN PRA signaling for both PRA and ISL trunks.

Dedicated modeIn this mode, the DCHI supports ISL trunks using ISDN PRA signaling. TD-channel communicates with the far end using a dedicated leased line,dial-up modem, or DTI2 trunk.

DCHI switch settingsFor ISL functions, use the following switch settings for the J2 port:

— RS-232 for 19.2 Kbps and below

— HS (RS-422) for speeds above 19.2 Kbps

— External clock (in Overlay 17) provided by modem, ADM, or ASIM, otherwise DCHI will be running at 64 Kbps

— DTE device configuration

Figure 50 shows the ISL high-speed programming jumper settings for thNT6D11AB, NT6D11AE DCHI, and Figure 51 shows the ISL low-speed programming jumper settings for the NT6D11AB, NT6D11AE/AF DCHI.


of 222 ISL installation


Figure 50NT6D11AB, NT6D11AD DCHI with ISL high-speed programming jumper settings

553-7350

PORT 0

PORT 1

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422

553-2901-201 Standard 5.0 June 1999

ISL installation Page 195 of 222


Figure 51NT6D11AB, NT6D11AD DCHI with ISL low-speed programming jumper settings

553-7351

PORT 0

PORT 1

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422

DCE

DTE

DCE

DTE

RS-232

RS-422

RS-232

RS-422




MSDL switch settingsFor ISL functions, use the following switch settings.

— DTE for high speed programming;

— RS-232 for 19.2 Kbps and below;

— External clock (in LD17) provided by modem, ADM, or ASIM, HSDMotherwise DCH runs at 64 Kbps. Refer to Figure 52.

Figure 52MSDL/ISL settings

0 9 8 7654

321

0 9 8 7654

321

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

1 2 3 4 5 6 7 8ON

1 2 3 4 5 6 7 8 9 10ON

Ones

DCELED

Port 0

Port 1

Port 2

Port 3

MonitorPort

DTE

S4 S8

422232

Card Address Select Switches

Tens

S9 S10

DCE DTE

S3 S7

422232

DCE DTE

S2 S6

422232

DCE DTE

S1 S5

422232

553-5431

553-2901-201 Standard 5.0 June 1999


nd

R,

nks,


Shared modeIn shared mode, the D-channel is provided by the DCHI or MSDL card aPRI. The hardware configuration is basically the same as the ISDN PRI D-channel. See Figure 53.

Shared mode is established through service change in LD17, prompt USwith the response SHA.

In the shared mode, the DCH can share signaling for no more than 382 truincluding digital and analog.

Figure 53ISL in shared mode

PRIPRI

PRI

PRI

PRI

PRI

553-1398

Meridian 1 Meridian 1

ISL D-channel

must be configured asnon-ISL trunks

DCHIor MSDL

DCHIor MSDL

TIE TIE

500 setline card

500 setline card

Modem

Originating siteautodial

Terminating siteautodial

ModemQCAD42Aor NTND27

QCAD42Aor NTND27




em . See ely


Dedicated mode using leased lineIn this configuration, the D-channel connects the DCHI or MSDL to a modwhich communicates with a far-end modem over a dedicated leased lineFigure 54. A 2400 baud D-channel can support signaling for approximat700 trunks without non-call associated messages.

Both modems should be set in the synchronous mode.

Figure 54ISL dedicated mode, using leased line

PRI PRI

553-1505


(X11 release 18)

MSDLDCHIModem ModemQCAD42A NTND27ISL D-channel

Leased line

553-2901-201 Standard 5.0 June 1999


is the

l e

alled fore

dial

re

d the

e


Dedicated mode using dial-up modemIn this configuration, the DCHI or MSDL is connected to a modem whichconnected to a 500 set line card. See Figure 55. The call is connected tofar end through the 500 set-to-TIE trunk path.

To set up the D-channel, program the modem at one end in the auto-diamode, so it automatically initiates a call to the other end at power up. Thauto-dial DN must be coordinated with personnel at the far end switch.

Installing the Hayes Smartmodem 2400The software and hardware of the Hayes Smartmodem 2400 must be instsequentially. The Hayes Smartmodem 2400 software must be defined bethe hardware connection between the Hayes Smartmodem 2400 and theMeridian 1 can be made. Within the software installation, either the autoor the autoanswer software can be set up first.

Examples of parameters used for actual autoanswer and autodial sites ashown on the following pages. The Hayes Smartmodem 2400 User's Guidecontains explanations of the parameters used.

After the software parameters have been set up, the JP1 jumpers behinfront faceplate of the Hayes Smartmodem 2400 must be dumb strapped on both modems. Then see the Hayes Smartmodem 2400 Getting Started Guidto set up the hardware between the Meridian 1 and the modem.

Note: The Hayes Smartmodem 2400 cannot be used on leased, conditioned lines.




Figure 55ISL dedicated mode, using dial-up Hayes Smartmodem 2400

PRIPRI

PRI

PRI

PRI

PRI

553-1398


ISL D-channel

must be configured asnon-ISL trunks

DCHIor MSDL

DCHIor MSDL

TIE TIE

500 setline card

500 setline card

Modem

Originating siteautodial

Terminating siteautodial

ModemQCAD42Aor NTND27

QCAD42Aor NTND27


553-2901-201 Standard 5.0 June 1999


als


Table 47 identifies the signals sent from the pack to the modem, the signthe pack requires from the modem, and the state of the modem.

Table 47Pin assignment for D-channel RS-232 interface

Designation Direction State

PIN # Description EIA CCITTCOMMON

To DTE To DCE0 Space

On1 Mark

Off

1 frame gnd AA 101 FG

2 tx data BA 103 TxD X +12V -12V

3 rx data BB 104 RxD X +12V -12V

4 req to send CA 105 RTS X +12V -12V

5 clr to send CB 106 CTS X +12V -12V

6 data set rdy CC 107 DSR X +12V -12V

7 signal gnd AB 102 SG

8 data cxr detect CF 109 DCD X +12V -12V

9-14 (not connected)

15 tx clock DB 114 SCT X +12V -12V

16 (not connected)

17 rx clock DD 115 SCR X +12V -12V


20 data term rdy CD 108.2 DTR X +12V -12V


23 data rate sel CH 111 DRS X +12V 12V

24 ext tx clock DA 113 SCTE X +12V 12V

25 (not connected)



ata ). C). ath.

IM

hot l is

6

bps, bps

es. rce ines

l


Dedicated mode using DTI2 trunksIn this configuration, the DCHI or MSDL is connected to an High Speed DModule (HSDM) or Asynchronous/Synchronous Interface Module (ASIMSee Figure 56. The HSDM or ASIM is connected to a Data Line Card (DLThe call is then connected to the far end through the DLC to DTI trunk p

To establish the D-channel in this configuration, set up the HSDM or ASat one end in hot line mode. The hot line DN must be coordinated with personnel at the far end, then programmed in LD11. The preprogrammedline DN is dialed by the Meridian 1. If the call cannot be established, theMeridian 1 continues to dial the hot line number continuously until the calconnected.

Set the HSDM or ASIM must be in synchronous mode. A data rate of 9.Kbps is recommended because it provides internal error detection and correction. The following data rates are also supported: 1.2 Kbps, 2.4 K3.6 Kbps, 4.8 Kbps, 7.2 Kbps, 14.4 Kbps, 19.2 Kbps, 38.4 Kbps, and 56 Kfor ASIM. The High Speed Data Module (HSDM) supports 64 Kbps.

Note 1: This configuration is the least reliable due to the lockup problems inherent in Smart Modems from power splices and noisy linTo increase the reliability on this configuration, a constant power soucan be used when powering the modems. Also ensure that the TIE lmeet data grade specifications.

Note 2: Northern Telecom takes no responsibility for ISL D-channeoutages due to modem lockup.

553-2901-201 Standard 5.0 June 1999



Figure 56ISL dedicated mode: using PRI/DTI trunk

PRIPRI

PRI

PRI

PRI

PRI

553-5374

Meridian 1Meridian 1

(X11 release 18)

ISL D-channel

DCHI MSDL

DTI orPRI

DTI orPRI

Dataline card

Dataline card

HSDMor

ASM

HSDMor

ASMQCAD42A NTND27




t

a


QMT11 switch settingsIf using the QMT11 ASIM, set the dip switches, located on top of the uniunder the flip-up, as follows:

— Hotline On; See Note 1.

— Forced DTR On; See Note 2.

— FDX (full duplex) On

— SYNC On

— INTernal CLK On

— Modem/Network Modem

— Auto Answer On

— Loopback Off

Note 1: Set only one side of the interface to originate the hot line.

Note 2: Forced Data Terminal Ready (DTR) automatically reinitiatesdropped hot line call.

553-2901-201 Standard 5.0 June 1999


as


QMT8 switch settingsIf the QMT8 Asynchronous Data Module (ADM) is used, set the switchesfollows:

Switch 1: Switch 3: Switch 4:

set to zeros (no VFDN)1 not used

2 not used

3 FDX (full duplex)

4 modem

5 internal clock

6 no echo

7 auto answer

8 off (no loopback)

1 on

2 on (hot line*)

3 off (DTR-data terminal ready-required)

4 on (synchronous) U5 and U7 must be jumpered

* Only one side of the interface should be set to originate the hot line.



it

a


QMT21C switch settingsIf using the QMT21 HSDM, set the dip switches, located on top of the ununder the flip-up, as follows.

— Hotline On; See Note 1.

— Forced DTR On; See Note 2.

— FDX (full duplex) On

— SYNC On

— INTernal CLK On

— Modem/Network Modem

— Auto Answer On

— Loopback Off

Note 1: Set only one side of the interface to originate the hot line.

Note 2: Forced Data Terminal Ready (DTR) automatically reinitiatesdropped hot line call.

553-2901-201 Standard 5.0 June 1999


d

ks,


ISL installationThe following procedures explain the installation for ISL in both dedicateand shared modes.

Modem paths must have individual configurations: route data blocks, trunroutes, etc.

ISL dedicated mode (digital and analog)DTI should already be up and running.

1 In LD17, configure ISL for dedicated mode.USR ISLDISLM Number of trunks handled by this D-Channel (1-382)

2 In LD16, configure the Route Data Block to map out the software parameters for these trunks.

3 Install the modem with leased line functionality.

4 In LD14, reassign old trunks to the routes just built in LD16.

5 In LD16, out the old DTI route. A separate Route Data Block should be built for Leased Line, or to accommodate the dialing plan for a dedicated modem.

ISL shared modeDTI or PRI should already be up and running.

1 In LD14, remove the PRI trunks.

2 In LD17, configure ISL for dedicated mode.USR SHAISLM Number of trunks handled by this D-Channel (1-382)

3 In LD16, build a PRI route data block. This is the same route you just removed in step 1.ISDN YES

4 In LD16 build another route data block to correspond to the IAS routes.

5 In LD14, assign trunks to the newly configured routes.




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is ls out

wn


Echo canceller installationEcho cancellers are required only in cases where satellite transmission being used. The echo canceller detects the length of the loop, and cancetransmission reflections (which result in audible echoes of voices on satellite-carried calls).

Echo canceller operating parametersThe operational parameters of the echo canceller must be:

Data transfer rate: 4800 baud

System unit number: 1

Display time-out: active

Failures before alarm: 3

Echo canceller initialization proceduresEach of the 24 channels on the echo canceller must be initialized as shohere:

Bypass: OFF

Off-hook: ON

Canceller only: OFF

H reset: OFF

H hold: OFF


of 222 Echo canceller installation

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57


PRI to Echo canceller pin assignmentsThe echo canceller is controlled by an RS-232 port on the NT8D72AB, NT8D72BA PRI circuit pack. The following tables give the echo cancellepin assignments, operating parameters and initialization procedures.

See Table 48 for PRI-to-Echo canceller pin assignments; refer to Figurefor a PRI-to-Echo-canceller cabling schematic.

Table 48PRI-to-Echo canceller – pin assignments

Signal PRI pinEcho canceller

pin

EIA RS-232-C circuit

designator

TXD (Transmitted Data)

5 2 BA

RXD (Received Data)

2 3 BB

RTS (Request to Send)

— 4 CC

CTS (Clear to Send)

— 5 CB

Common Return (signal ground)

10 7 AB

DCD (received line signal detector)

1 8 CF

DTR (data terminal ready)

4 20 CD

553-2901-201 Standard 5.0 June 1999

Echo canceller installation Page 211 of 222


Figure 57PRI to echo canceller cabling

P R I

DisActRedYelLBk

J1 Ref 1

J1 Ref 2

J3 Net Loop

S

SERA

J4

J6

J5

553-1504

XTIP

XRING

GRD (Shield)

RTIP

RRING

GRD (Shield)

RXD (BB)

TXD (BA)

DCD (CF)

DTR (CD)

GRD (AB)

(if equipped)

J6

J4

1

9

2

3

11

4

2

5

1

4

10

Network

I/O Filter

Cross-Connect

BlockEcho

CancellerNCTE

(if required)

T1Port

RXD

TXD

DCD

DTR

GNDCTSRTS

RS-232 Jack

QPC720PRI QCAD129

cableI/O Filter Optional

Cross-Connect

Block

3

2

8

20

7

54


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222

RA)


Non-standard cablesThis section provides information required to build Meridian 1 and SL-1 systems cables of non-standard lengths for ISDN Primary Rate Access (Papplications.


of 222 Non-standard cables

plate ent

nd


NT5K40AA, NT5K41AA, NT5K86AAThese cables are used to transport the 2Mb/s digital signal from the faceconnector on the Primary Rate Interface to the Line Terminating Equipminterface.

— Standard lengths NT5K40AA - 4 m (13 ft)NT5K41AA - 8 m (26 ft)NT5K86AA - 12m (39 ft)

— Construction - 75 ohm dual co-axial type with solid inner conductor abraided shield.

— J1 Connector - 15-pin, male, subminiature D with jack-screws

— J2 Connector - 75 ohm BNC crimp plug

— J3 Connector - 75 ohm BNC crimp plug

Table 49NT5K40AA, NT5K41AA, NT5K86AA wire list

From(pack end)

To(I/O end)

Signal

J1-1 J2 Inner Conductor XTIP (transmit)

J1-9 J2 Shield XRING (transmit)

J1-3 J3 Inner Conductor RTIP (receive)

J1-11 J3 Shield RRING (receive)

J1-9 J3 Shield FRAME GROUND

553-2901-201 Standard 5.0 June 1999

Non-standard cables Page 215 of 222

to

ews


NT8D7206, NT8D7207This cable is used to transport the 2Mb/s digital signal from the PRI packthe I/O assembly located at the cabinet bulkhead.

— Standard length - 3.05 m (10 ft) for SL-1 system options 51, 61, 71, NT, XT

1.25 m (4 ft) for SL-1 system options 21 and ST

— Construction - 24 AWG, stranded foil-shielded twisted pairs

— P1 Connector (Pack end) - 9-pin, male, subminiature D, with jack-scr

— P2 Connector (I/O Panel end) - 9-pin, male, subminiature D, with jack-screws

Table 50NT8D7206, NT8D7207 wire list

ColorFrom(pack end)

To(I/O end)

Signal

White P1-1 P2-6 XTIP (transmit)

Black P1-9 P2-7 XRING (transmit)

Green Shield nc P2-CASE P2-9 GROUND

Red P1-3 P2-2 RTIP (receive)

Black P1-11 P2-3 RRING (receive)

Red Shield nc P2-CASE P2-5 GROUND




QCAD128This cable transports the T1 signal from the PRI pack to the I/O panel.

— Standard length - 10 ft (3.05 m)

— Construction - 15-conductor ribbon, 28 AWG (0.321 mm), stranded

— P1 Connector - 15-pin, male, subminiature D, with jack-screws


See Table 51.

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Table 51QCAD128 wire list

From To Signal

P1-1 P2-1 XTIP (transmit tip) to telephone company

P1-2 P2-2 GND (ground)

P1-3 P2-3 RTIP (receive tip) from telephone company

P1-4 P2-4 GND (ground)

P1-5 P2-5

P1-6 P2-6

P1-7 P2-7

P1-8 P2-8

P1-9 P2-9 XRING (transmit ring) to telephone company

P1-10 P2-10

P1-11 P2-11 RRING (receive ring) from telephone company

P1-12 P2-12

P1-13 P2-13

P1-14 P2-14

P1-15 P2-15




QCAD129This cable is used to connect the RS-232-C interface between an echo canceller and the PRI pack.

— Standard length - 2.1 m (7 ft)

— Construction - 22 AWG (0.644 mm), stranded


— P2 connector - 25-pin, male, subminiature D, with jack-screws


PRI Signal From ToEcho

CancellerSignal

DCD P1-1 P2-20 DTR

RXD P1-2 P2-2 TXD

DTR P1-4 P2-8 DCD

TXD P1-5 P2-3 RXD

GND P1-10 P2-7 GND

RTS P1-12 P2-4

CTS P1-9 P2-5

TPENB(Test Port Enable Bar)

P1-15 nc

553-2901-201 Standard 5.0 June 1999


l )

al

1

al


QCAD133For cabinets with an I/O filter assembly, this cable transports the T1 signafrom the I/O filter to the Network Channel Terminating Equipment (NCTEtelephone company interface. See Table 53.

For cabinets without an I/O filter assembly, this cable transports the T1 signfrom the QPC720 PRI pack to the NCTE telephone company interface.

— Standard length - 50 ft (15.3 m)

— Construction - Individually foil-shielded, twisted pairs, 24 AWG (0.51mm), stranded

— P1 Connector - 15-pin, female, subminiature D with jack-screws

— P2 Connector - 15-pin, male, subminiature D, with slide-latch (optionspring-latch loose-packed with cable assembly)


Color From To PRI signal

WHITE P1-1 P2-1 XTIP (transmit tip) to telephone company

BLACK P1-9 P2-9 XRING (transmit ring) to telephone company

GRN SHLD P1-2 nc GND (ground)

RED P1-3 P2-3 RTIP (receive tip) from telephone company

BLACK P1-11 P2-11 RRING (receive ring) from telephone company

RED SHLD P1-4 nc GND (ground)



l at

1


NT8D7205This cable is used to transport the 2Mb/s digital signal from the I/O panethe cabinet bulkhead to the Network Channel Terminating Equipment (NCTE) telephone company interface.

— Standard length - 15.3 m (50 ft)

— Construction - Individually foil-shielded, twisted pairs, 24 AWG (0.51mm), stranded

— P1 Connector - 9-pin, female, subminiature D with jack-screws

— P2 Connector - 9-pin, male, subminiature D, with jack screws

Table 54NT8D7205 wire list

ColorFrom(pack end)

To(I/O end)

Signal

White P1-6 P2-6 XTIP (transmit)

Black P1-7 P2-7 XRING (transmit)

Green Shield P1-9 nc GROUND

Red P1-2 P2-2 RTIP (receive)

Black P1-3 P2-3 RRING (receive)

Red Shield P1-5 nc GROUND

553-2901-201 Standard 5.0 June 1999


rd, 28


QCAD328This cable is used to connect the PRI pack to the D-channel interface caeither the QPC757 or NT6D11AB DCHI. There are two types of QCAD3cables: QCAD328A and QCAD328B.

— QCAD328A - 1.8 m (6 ft)

— QCAD328B - 5.5 m (18 ft)

— QCAD328C - 10.67 m (35 ft)

— QCAD328D - 15.24 m (50 ft)

— Construction - 24 AWG (0.511 mm), stranded

— P1 Connector - 25-pin male, subminiature D

— P2 Connector - 15-pin male, subminiature D


From To Signal

P1-2 P2-2 SDA+

P1-13 P2-10 SDB-

P1-20 P2-15 TR

P1-15 P2-9 STA+

P1-14 P2-11 STB-

P1-3 P2-4 RDA+

P1-16 P2-12 RDB-

P1-17 P2-5 RTA+

P1-12 P2-13 RTB-

P1-8 P2-8 RR

P1-5 P1-8 CS

P1-7 P1-1 SG

P1-1 P2-1 GND




NTND26 PRI to MSDL cablesPurpose—These cables connect the MSDL card to the PRI cards.

— NTND26AA 6 feet

— NTND26AB 18 feet

— NTND26AC 35 feet

— NTND26AD 50 feet

NTND27 MSDL to I/O panel cablesPurpose—These cables connect the MSDL card to the I/O panel.

— NTND27 6 feet

NTND98 PRI to I/O panel cablesPurpose—These cables connect the PRI trunk card to the I/O panel.

— NTND98 6 feet

553-2901-201 Standard 5.0 June 1999


Family Product Manual Contacts Copyright FCC notice Trademarks Document number Product release Document release Date Publish

Meridian 1

International ISDN PRIInstallation

© 1991,1999 Nortel Networks CorporationAll rights reservedInformation is subject to change without notice. Nortel Networks Corporation reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules, and the radio interference regulations of Industry Canada. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense.Meridian 1 is a trademark of Nortel Networks Corporation.Publication number: 553-2901-201Document release: Standard 5.0Date: June 1999Printed in the United States of America

Installation Guide for Nortel Meridian 2

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