WorldDSL HDSL Line Units

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WorldDSL HDSL Line Units

Quick Installation Guide

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OVERVIEWThis Quick Installation Guide contains information for the

WorldDSL Line Units.

Table 1. Line Units, Interfaces, and PTM Support

LINE TERMINATION UNITSThe WorldDSL Line Termination Units (LTUs) model LTU-804 is

the Exchange Office side of an E1 transmission system. They

connect to a remote WorldDSL Network Termination Unit (NTU) to

provide a complete High-bit-rate Digital Subscriber Line (HDSL) E1

system.

The LTUs accept the DTE payload through G.703 and serial data

(Nx64k) interface ports and transport data to the NTU over the

HDSL loop at rates of up to 2.048 Mbps (the standard E1 rate). The

LTUs require -36 to -72 Vdc input from a local power supply. The

G.703 interface conforms with the ITU-T G.703 physical

specification and can be configured for an impedance of 75Ω

unbalanced or 120Ω balanced. User-selectable protocols conform

the Nx64k interface to V.35, V.36, X.21, or RS-530 (RS-449)

standards. The 2.048 Mbps payload is allocated to the G.703 and

Nx64k ports in time slot increments of 64 kbps each. The LTUs can

supply power to the remote NTUs using less than 120 Vdc and 50

mA on each HDSL loop. LTUs can line power 1 or 2 EDU-840 L3

doublers. LTUs can also line power UTUs.

UNIVERSAL TERMINATION UNITSThe WorldDSL Universal Termination Units (UTUs) model

UTU-804 is LTU- and NTU-configurable HDSL line units with G.703

and/or Nx64k interfaces. The default configuration of the UTU is

NTU.

The UTUs are functionally identical to LTUs with the same interface

(G.703 and/or Nx64k). The UTUs receive power from an LTU or

local power supply. They do not supply power to other HDSL units.

The UTUs can be installed in either a chassis or in an ERE remote

enclosure. LTUs and UTUs can be connected for longer reach

using EDU-804 L3 doublers.

TRANSMISSION RANGESTransmission ranges are based on a signal attenuation of 35 dB at

292 kHz with 135Ω terminations and assume the presence of noise

according to the model described in WorldDSL specification TS

101 135. The expected Bit Error Rate (BER) under this noise model

is 1x10-7. The reach of the system in such a noise environment is

2.8 km (1.74 miles) over 0.4 mm (26 AWG) twisted-pair copper

wire. Reducing the number of interferers in the cable results in

greater transmission distances.

COMPATIBILITYThe LTUs and UTUs are compatible with the following WorldDSL

shelves and enclosures.

• EMS-830 Exchange Office Management Shelf, rear

connector access.

• EMS-832 Exchange Office Management Shelf, front

connector access.

• ERE-811 Single-Slot Remote Enclosure. Equipped withinternal AC power supply on List 5.

Model Interface PTM

LTU-804 L1C G.703/Nx64k Yes

UTU-804 L1C G.703/Nx64k Yes

!

IMPORTANT Use of this product in a manner other than defined inthis installation guide may cause damage to equipmentor injury to personnel.

Falls der Gebrauch von diesem Produkt nicht gemaessder Definition im Installations Handbuch eingehaltenwird, besteht die Gefahr, dass Schaden am Geraet odersogar Koerperverletzungen entstehen koennten.



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Figure 1. Front Displays

Table 2. Front Panel LED Functions

LED/

Function Mode Description

HDSL Loop 1SYNCHDSL Loop 2SYNC

Displayssynchronizationstate for HDSL

Loop 1/Loop 2.

Steady green HDSL loop i s ready to transmi tand receive data across allspans.

Slow bl inking HDSL loop acquis it ion i s inprogress for local span.

Fast bl inking HDSL loop acquis it ion i s in

progress for downstream span(LTU only).

Off HDSL loop is not configured.

HDSL Loop 1 ALMHDSL Loop 2 ALM

Displays alarmstate for HDSLLoop 1/Loop 2.

Steady red Loss of sync word (LOSW),margin (MAR) below threshold,or errored seconds (ES) countabove threshold.

Pulsing red Pulses for every ES on anyspan.

Off Normal transmit or receive datais in progress.

I/F ALM

Displays alarm

state for the

G.703 or Nx64k

port.

Bl inking red Receive a larm indication signal(AIS) or G.703 loss of framealignment (LFA).

Pu lsing red Pu lses for every G.703 ES.

Steady red Loss of external clock (LOC) orG.703 signal (LOS).

LTU-804 L1C Front Panel UTU-804 L1C Front Panel

INSTALLATION

Step 1: Safety

!

IMPORTANT The input voltage for the List 1C HDSL cards is anominal -48 Vdc (tolerance -36 to -72 Vdc). However,to comply with the CE Mark Low Voltage Directive,the input voltage for these HDSL cards must belimited to a maximum of -60 Vdc and supplied by anisolated DC source that complies with TNV orearthed SELV requirements of the latest version ofIEC 950.

Die Eingangsspannung für die List 1C Karten istnominell -48 VDC, Toleranz -36 bis -72 VDC. Um denVorschriften des CE Prüfzeichen zu genügen ist dieGleichstromquelle auf ein maximum von -60 Vdc zulimitieren. Die isolierte Gleichstromquelle mussebenfalls den Vorschriften der Norm IEC 950 fürFernsprechnetzspannung (TNV) undSicherheitskleinspannung (SELV) entsprechen.

!

IMPORTANT Be careful when installing or modifying telephonelines. Dangerous voltages can be present. It isunsafe to install telephone wiring during a lightningstorm.

Walte Vorsicht beim Installieren oder Ändern von

Telefonlinien. Gefährliche Spannungen könntenanliegen. Es ist nicht sicher während einesGewitters Telefondräte zu installieren.

!

IMPORTANT Always disconnect all telephone lines and powerconnections before servicing or disassembling thisequipment. For performance and safety reasons,only power supplies listed for use with telephoneequipment by a locally recognized organizationshould be used with WorldDSL equipment. All wiringexternal to the product should follow the local wiringcodes.

Bevor Wartung oder Auseinandernehmen desGerätes müssen immer alle Telefon- und Netzkabelausgezogen werden. Aus Leistungs- undSicherheitsgründen sollten nur Netzteile die für

Telefongeräte zugeschnitten und von einemrenommierten Geschäft vertrieben werden mitWorldDSL Geräten verwendet werden. Alle externenVerdrahtungsarbeiten sollten nach den hiesigenElektrizitätsvorschriften ausgeführt werden.

!

IMPORTANT The line units contain static-sensitive components.Wear an antistatic wrist band connected to earthground when installing these units.



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Step 2: Line Unit Jumper SettingsJumpers must be set on the LTU-804 and UTU-804 if using a

120Ω interface or if grounding your G.703 cables a t the data port

on the shelf or remote enclosure. The locations of these jumpers

(P8, P11, and P12) are shown in Figure 2.

Figure 2. Jumper Locations on LTU-804 and UTU-804 Line Units

To set the jumpers on the LTU-804 and UTU-804 line units:

Step Action

1 Jumper P8 complies with the ITU G.703 requirement

that an option be provided which allows the connection

of the outer conductor of the coaxial pair or the screen

of the symmetrical pair to earth (frame) ground at the

G.703 input data port. Do one of the following:

• Do nothing if the factory settings provide the

standard G.703 input port interface. Cable grounding

is not used.

• Short P8 pins 1 and 2 if grounding the screen of the

120Ω cable.

• Short P8 pins 2 and 3 if grounding the outer

conductor of the 75Ω input cable.

2 Jumpers P11 and P12 configure the line unit for use

with a 75Ω or 120Ω G.703 interface. Place the

four-position jumper block on one of the following:

• P11 for balanced 120Ω circuits.

• P12 for unbalanced 75Ω circuits (factory setting).

P11 P12

P8

Step 3: Line Unit Installation

To install an LTU or UTU into a shelf or remote enclosure:

Table 3. G.703 75Ω Output Connector Pinouts

Table 4. G.703 75Ω Input Connector Pinouts

!

IMPORTANT The chassis ground of the shelf or remote enclosurereceiving these units must be connected to earthground for protection of the equipment and for thesafety of personnel.

Der Gehaeuseboden beim Einschub oder bei derFerneinschließung, muß an die Masse angeschlossenwerden, die dann für den Schutz der Ausrüstung undauch zur Sicherheit der Personen dient.

!

IMPORTANT Primary protection for the HDSL line must be providedby the user. Both primary and secondary protectionmust be provided by the user if the E1 line runs outsideof the building.

Der primaere Schutz des HDSL Anschlusses muss vonder Benutzerseite aus geregelt werden. Wenn der E1 Anschluss ausserhalb des Gebaeudes installiert ist,muss der primaere und sekundaere Schutz von derBenutzerseite aus geregelt werden.

Step Action

1 Install the line unit into the appropriate slot (1 through

16) of a shelf or into a remote enclosure. See“Compatibility” on page 1.

2 Connect the interface cabling and power connections

using the procedures in the user manual for the shelf

or remote enclosure in which the line units are

installed.

3 Set the DTE to the correct data rate or keep the DTE

disconnected.

Pin Signal Description

Center E1_TTIP G.703 Output, Tip

Shield E1_TRING G.703 Output, Ring

Pin Signal Description

Center E1_RTIP G.703 Input, Tip

Shield E1_RRING G.703 Input, Ring

Table 5. G.703 75Ω Input Connector Pinouts

Table 6. HDSL Line Connector Pinouts

Pina

a. No other pins are used.

Signal Description

1 E1_RTIP G.703 Input, Tip

2 E1_R120SCRN G.703 Input Port

Screen

3 E1_TTIP G.703 Output, Tip

4 CGND Chassis Ground

9 E1_RRING G.703 Input, Ring

11 E1_TRING G.703 Output, Ring

Pina

a. No other pins are used.

Signal Description

4 HDSL_RING_A HDSL Ring Loop 1

9 HDSL_TIP_A HDSL Tip Loop 1

1 HDSL_RING_B HDSL Ring Loop 2

6 HDSL_TIP_B HDSL Tip Loop 2



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HDSL SELF TEST AND LINK UPPower up the line units and observe the HDSL self test and link

up as follows:

Step Action

1 Turn on the power supplied to the shelf or enclosure

where the units are installed.

Each unit performs a brief power-up self test. During the test,

the front-panel LED indicators flash in an incremental binarysequence to indicate the test in progress. If the LEDs stopincrementing, the unit has failed the self test. Obse rve the finalLED pattern displayed, then contact ADC cust omer service.

Step Action

2 The units attempt to establish the HDSL link, and the

HDSL SYNC LEDs flash once per second. After

approximately 30 seconds, confirm the following:

• One or both of the HDSL SYNC LEDs are green and

the corresponding HDSL ALM LED is off. The HDSL

transmission line is ready to transmit and receive

user data. The units are now ready for configuration

through the console screen menus.

• One or both of the HDSL SYNC LEDs continue toflash. If the LEDs do not stop flashing after

approximately one minute, it indicates that the HDSL

transmission pair corresponding to the indicator is

experiencing an excessive signal loss or is open.

Check the line and repair it if necessary.

• An LTU holds the configuration settings for both itself

and the remote NTU. After the two units establish

synchronization, the LTU checks if the remote NTU

is the same type (same model number) as existed

prior to the units achieving synchronization. If the

NTU type is the same, the LTU configures the NTU

to the previous settings that had been established. If

the NTU type is different, the LTU configures the

NTU to its factory default settings.

S YSTEM CONFIGURATION

After establishing communication with the remote line card, the HDSL

system can be configured and its performance monitored from the

local unit. If the HDSL link is down, the only parameters that can be

changed are those on the local unit. The LTU also provides a special

lockout feature that prevents users from changing the circuit

configuration. When enabled, the maintenance terminal connected to

an NTU provides a read-only view of the entire HDSL system.

The console screen menus are not available when the HDSLline unit is under the control of a shelf management unit.



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HOW TO OBTAIN ADC DOCUMENTATIONCopies of this and other, associated WorldDSL publications can be downloaded from the ADC

website at www.adc.com. To order a hard copy, please contact your sales representative.

FCC CLASS A COMPLIANCEThis 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. 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 radiocommunications. 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 his own expense.

LIMITED WARRANTYProduct warranty is determined by your service agreement. Refer to the ADC Warranty/Software

Handbook for additional information, or contact your sales representative or Customer Service for

details.

MODIFICATIONS Any changes or modifi cations made to this device that are not expressly approved by ADC

Telecommunications, Inc. voids the user's warranty. All wiring external to the products should

follow the provisions of the current edition of the National Electrical Code.

STANDARDS COMPLIANCEThis equipment has been tested and verified to comply with the applicable sections of the following

safety standards:

• GR 63-CORE - Network Equipment-Building System (NEBS) Requirements

• GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety

• Binational standard, UL-60950/CSA C22.2 No. 60950-00: Safety of Information Technology

Equipment.

WORLD HEADQUARTERSTo contact ADC by mail:

ADC Telecommunications, Inc.

PO Box 1101

Minneapolis, MN 55440-1101

TECHNICAL SUPPORTTechnical assistance is available 24 hours a day, 7 days a week by contacting the ADC Technical

Assistance Center (TAC) at:

Telephone: 800.366.3891 (toll-free in the U.S. and Canada)

E-mail: [email protected]

Knowledge Base: www.adc.com/Knowledge_Base/index.jsp

Web: www.adc.com

WORLDDSL HDSL LINE UNITS

Quick Installation Guide

Product Catalog: LTU, UTU

Document: LTPE-QI-3147-01

Issued November 2, 2007´.7"¶0A¨

1423020

REVISION HISTORY

Copyright ©2007 ADC Telecommunications, Inc. All rights reserved.

ADC is a registered trademark of ADC Telecommunications, Inc. WorldDSL is a trademark of ADC Telecommunications, Inc. No right, license, or i nterest to such trademarks is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.

Other product names mentioned in this practice are used for identification purposes only and may be trademarks or registered trademarks of their respective companies.

Information contained in this document is company private to ADC Telecommunications, Inc., and shall not be modified,used, copied, reproduced or disclosed in whole or in part without the written consent of ADC.

Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further

disclaims any and all liability for indirect, incidental, special, consequential, or other similar damages. This disclaimer of liability applies to all products, publications and services during and after th e warranty period.

Rev Date Revisions

01 11/2/2007 Initial release.

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