RSM 155C User Handbook V1.10

8/3/2019 RSM 155C User Handbook V1.10

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RSM-155CCentralized SDH Optical Transmission

System

User Handbook

V1.10

July. 2009


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RSM-155C User Handbook_ V1.10 Page 2

Revision History

Version Date Remarks

V1.00 2009-02-18 Primarily Released.

V1.10 2009-07-13

Deleted function of RPD, renew figure of front panel of

DO1 card;

Added description of networking mode;

Changed description of both PC management software

and Network application;

Changed description of system structure, main cards

and EOW function;

Added description of protection switch and appendix.

Contents

1 Introduction ....................................................................................................................... 61.1 Overview ..................................................................................................................... 61.2 Main features ............................................................................................................... 6

2 System Structure .............................................................................................................. 72.1 Subrack ....................................................................................................................... 72.2 The backplane ............................................................................................................. 8

3 Line Card - DO1 .............................................................................................................. 123.1 Introduction ................................................................................................................ 123.2 Front Panel of DO1 Card ........................................................................................... 123.3 Jumper settings ......................................................................................................... 133.4 ALS Function ............................................................................................................. 133.5 Networking mode ...................................................................................................... 143.6 Technical Parameters ................................................................................................ 163.7 Network Management ............................................................................................... 18


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4 Data Management Card - DMU ...................................................................................... 194.1 Introduction ................................................................................................................ 194.2 Front Panel ................................................................................................................ 194.3 Jumper settings ......................................................................................................... 244.4 Technical Parameters ................................................................................................ 254.5 Network Management ............................................................................................... 26

5 E1 Tributary Card - 2MM21 ............................................................................................. 275.1 Introduction ................................................................................................................ 275.2 Feature ...................................................................................................................... 275.3 Front panel ................................................................................................................ 285.4 DIP-Switch and Jumper settings ............................................................................... 295.5 Network Management ............................................................................................... 305.6 Technical Parameters ................................................................................................ 305.7 2MM cable ................................................................................................................. 31

6 Data Backup card - DBU ................................................................................................ 337 Network applications...................................................................................................... 34

7.1 Chain Network ........................................................................................................... 347.2 Ring Network ............................................................................................................. 347.3 Notice ........................................................................................................................ 34

8 Protection Switch ........................................................................................................... 378.1 1+1 Path Protection ................................................................................................... 378.2 1+1 SNCP ................................................................................................................. 38

9 System installation ......................................................................................................... 399.1 System sub rack installation ...................................................................................... 399.2 Data management card installation ........................................................................... 399.3 Line card (DO1) installation ....................................................................................... 439.4 Tributary card (2MM21) installation ........................................................................... 439.5 System check ............................................................................................................ 44

9.5.1 Visual checking ........................................................................................................ 449.5.2 Power on check ....................................................................................................... 44

10 Device management ................................................................................................... 4611 EOW ............................................................................................................................. 47

11.1 Introduction ................................................................................................................ 4711.2 Steps in configuration ................................................................................................ 4711.3 Note ........................................................................................................................... 48

12 Technical parameters ................................................................................................. 50Appendix Related documents ............................................................................................ 53


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Table Index

Table 2-1-1 Card slots ...................................................................................................................... 7Table 2-1-2 Introduction to Part of RSM-155C cards....................................................................... 8Table 3-2-1 Interfaces and indicators on front panel ..................................................................... 12Table 3-3-1 Jumper settings ............................................................................................................. 13Table 3-6-1 DO1 Environment requirements ................................................................................. 16Table 3-6-2 Parameters specified for STM-1 optical interfaces ..................................................... 17Table3-6-3 SDH NI output jitter parameters .................................................................................. 17Table3-6-4 STM-1 port input jitter and wander parameters ........................................................... 17Table3-6-5 REG jitter transfer characteristic .................................................................................. 18Table 4-2-1 Interfaces and indicators on front panel ..................................................................... 19Table 4-2-2 Switches on front panel .............................................................................................. 20Table4-2-3 The Details of Urgent (UALM) of system (SDH line) ................................................... 20Table4-2-4 The Details of Non-urgent alarm(DALM) of system(SDH line) .................................... 21Table4-2-5 Definition of Serial network management interface and User channel interface ........ 22Table4-2-6 Definition of ETS interface ........................................................................................... 22Table4-2-7 Definition of EX interface ............................................................................................. 23Table4-3-1 Jumper Settings ........................................................................................................... 24Table4-4-1 DMU Environment requirements ................................................................................. 25Table4-4-2 EMU interface characteristic ........................................................................................ 25Table4-4-3 ETS interface ............................................................................................................... 25Table4-4-4 EX interface ................................................................................................................. 25Table 5-3-1 indicators on front panel ............................................................................................. 28Table 5-4-1 Jumper settings .......................................................................................................... 29Table 5-4-2 DIP-Switch settings(S1) .............................................................................................. 29Table 5-6-1 2MM21 Environment requirements ............................................................................ 30Table5-6-2 E1 interface .................................................................................................................. 30Table5-6-3 PDH NI output jitter parameters .................................................................................. 30Table5-6-4 PDH port input jitter and wander parameters .............................................................. 30Table 12-1 Device dimension and weights .................................................................................... 50Table 12-2 Environment requirements ........................................................................................... 50Table 12-3 Power supply ............................................................................................................... 50Table 12-4 RSM-155C system interface summary ........................................................................ 50Table 12-5 Optical interface data summary ................................................................................... 51Table 12-6 E1 Tributary interface ................................................................................................... 51Table 12-7 Ethernet interface features .......................................................................................... 51Table 12-8 ETS interface ............................................................................................................... 51Table 12-9 EX interface ................................................................................................................. 52Table 12-10 232 Interface(as network management Interface ) .................................................... 52Table 12-11 232 Interface(as User channel Interface) ................................................................... 52Table 12-12 Ethernet management interface(EMU) ...................................................................... 52Table A-1 RSM-155C Related documents list ............................................................................... 53


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Figure Index

Fig.2-1-1 RSM-155C Subrack ......................................................................................................... 7Fig.2-2-1 The front side of backplane .............................................................................................. 9Fig. 2-2-2 The back side of backplane .......................................................................................... 10Fig. 2-2-3 Dentist Connector .......................................................................................................... 10Fig. 2-2-4 Pin assignment of dentist connector(75) .................................................................... 11Fig. 3-2-1 Front Panel of DO1 ....................................................................................................... 12Fig. 3-3-1 Jumper settings ............................................................................................................. 13Fig. 3-5-1 Mode1(AB:CD:EF) ........................................................................................................ 14Fig.3-5-2 Mode 2(AC:BD:EF) ........................................................................................................ 15Fig.3-5-3 Mode 3(AE:BF:CD) ........................................................................................................ 15Fig.3-5-4 Mode 4(AC:BE:DF) ........................................................................................................ 16Fig. 4-2-1 Front panel of DMU ....................................................................................................... 19Fig. 4-2-2 Serial network management Interface and User channel Interface .............................. 22Fig. 4-2-3 Application of EX ........................................................................................................... 23Fig.4-3-1 jumper settings of DMU .................................................................................................. 24Fig. 5-1-1 Application of 2MM21 .................................................................................................... 27Fig. 5-3-1 2MM21 front panel and E1 interface ............................................................................. 28Fig.5-4-1 DIP-Switch and jumper of 2MM21 ................................................................................. 29Fig.5-7-1 2mm cable ...................................................................................................................... 31Fig.5-7-2 2 Pin assignment of dentist connector(75) ................................................................. 32Fig. 6-1 DBU card .......................................................................................................................... 33Fig.7-1 Chain network. ................................................................................................................... 34Fig.7-2 Ring network ...................................................................................................................... 34Fig.7-4-c Star type I ....................................................................................................................... 35Fig.7-4-d Star type II ...................................................................................................................... 36Fig. 8-1 Ring Network .................................................................................................................... 37Fig. 8-2 Ring Network .................................................................................................................... 38Fig.9-2-1 Data Management card installation ................................................................................ 41Fig.9-2-2 Connect EOW set ........................................................................................................... 41Fig.9-2-3 Set the NE address ........................................................................................................ 41Fig.9-2-4 Connect EMS port .......................................................................................................... 42Fig.9-2-5 Joint the two RSM-155C belong to deferent networks ................................................... 42Fig.9-3 Connect STM-1 optical port ............................................................................................... 43Fig.9-4 Use 2mm cable to lead out E1 tributaries ......................................................................... 44Fig.9-5-2 Grounding ....................................................................................................................... 45


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1 Introduction

1.1 Overview

RSM-155C is a STM-1 optical transmission system, whose technical performances fully comply

with ITU-T and ETSI standards. The system provides up to six STM-1 aggregate optical

interfaces, completing synchronous timing features and a powerful non-blocking cross

connection matrix. It can be used for building point-to-point, chain or ring networks, with SNCP

features, serving departments of Telecom, Traffic or Energy industry, etc.

1.2 Main features

As an ADM or TM multiplexer;

Supports up to six STM-1 optical interfaces;

Supports up to 231 E1-circuit add/drop;

Provide Ethernet access of channelized E1;

Support any connectivity at VC12 or VC3 level;

Supports Auto Laser Shutdown (ALS) on each optical port

Support SETS, it is possible to tracing the line port or external synchronization input,

provide external synchronization output, and automatically handle timing source

rearrangement according to the failure message or SSM;

Support Path Protection and SNCP with switching time less than 50ms

Support EOW system for site selection calling.

Supports firmware download locally and remotely without disturbance of existing traffic

NE management

Supports network management based on PC via unified platform

Provides 10/100Base-T Ethernet port or RS-232 serial port to connect local NMS

(Network Management Station)


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2 System Structure

2.1 Subrack

RSM-155C subrack is 6U height, installed in 19 inch equipment racks conveniently, fully

comply with ETSI standard.Fig.2-1-1 shows the subrack.

Fig.2-1-1 RSM-155C Subrack

Card slots

The subrack contains 14 slots for plug-in cards, refer to Table 2-1-1 for details

Table 2-1-1 Card slots

Slot Description Remark

SLOT1 STM-1 line card slot Only DO1 card is allowed to plug in

SLOT2 STM-1 line card slot or Data

backup card slot

Either DO1 card or DBU card is allowed

to plug in

SLOT3 Data Management card slot Only DMU card is allowed to plug in

SLOT4 STM-1 line card slot or service

card slot

Either DO1 card or service card such as

2MM21, ES011 is allowed to plug in

SLOT514 Service card slots Various service cards such as 2MM21,

ES011 and etc. Is allowed to plug in


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Table 2-1-2 Introduction to Part of RSM-155C cards

Type Name Description

STM-1 line card DO1 Provides two STM-1 optical interfaces

Data Management

cardDMU

A comprehensive functional module integrating

network management, timing, Cross-connection,

EOW, overhead controlling and so on.

Data backup card DBU

DBU is a spare management card when DMU

failed to work, it backup some important data such

as cross-connection, network management, timing

and so on

E1 card 2MM21

Each 2MM21 card provides 21 E1 interfaces,

implementing mapping E1 traffic from each port into

VC-12 channel

ETH card ES011

ES011 provides 4 Ethernet ports, by adopting

VLAN technology and ITU-T G.7041- &

G.7042-compliant EOS (Ethernet Over SDH)

technology, each Ethernet port can employs one or

more separate Virtual Concatenation groups

(VCG), and each VCG can be assigned to one or

more Ethernet ports. The bandwidth of VCG can be

flexibly configured for efficient transmission of

Ethernet data over SDH network.

Note: RSM-155C provides various service cards which wont be introduced here; please refer

to the corresponding user handbook.

2.2 The backplane

The backplane is installed inside the subrack, used for signal interconnection among all plug-in

cards, and it provides tributary interfaces, alarm output and power supply access and so on,

The front side of backplane has totally 14 columns of high density sockets, numbered as


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SLOT1~SLOT14, used to connect telecom bus of the various plug-in cards:

1) For SLOT4 and SLOT 5, each provides up to sixty-three SDH TU-12 timeslots carrying

various types of signal to add to or drop from telecom-bus;

2) From SLOT 6 to SLOT 14, every three slots are organized as a group (i.e. SLOT 6, 7 and 8

are organized as a group, SLOT9, 10 and 11 and SLOT 12, 13, 14 grouped separately) ,each

group provides up to sixty-three SDH TU-12 timeslots.

Fig.2-2-1 The front side of backplane

In the back side of backplane, there are 11 columns (SLOT4~14)of high density socket

connectors, used for providing E1 interfaces of local device, and each Slot provides up to

twenty-one E1 interfaces. There are two -48V DC power interfaces which can be accessed at

the same time, the two power modules are the standby power to each other See Fig.2-2-2 for

more.


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4, #4 E1 Outa18, #4 E1 Ind13, #3 E1 Outa3

7, #3 E1 Ind32, #2 E1 Outa46, #2 E1 Ind41, #1 E1 OutA65, #1 E1 Ind6

Fig. 2-2-4 Pin assignment of dentist connector(75 )


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3 Line Card - DO1

3.1 Introduction

DO1, the line card of RSM-155C, provides two STM-1 optical interfaces performing optical

signal transmitting and receiving, the processing ofSOH, high-order channel OH and pointer

explanation. It also provide synchronous timing source for synchronous timing unit. An

RSM-155C can supports 3 DO1 cards and provides 6 155Mb/s optical interfaces.

3.2 Front Panel of DO1 Card

DO1 N

OP

NOP

ALM

RUN

TX

RX

A TX

RX

B

Fig. 3-2-1 Front Panel of DO1

Table 3-2-1 Interfaces and indicators on front panel

Name Description

TX Optical signal output interface

RX Optical signal input interface

A/B Mark of Optical interface

NOP

Optical signal los alarm indicator ,red

ON: Optical signal loss is detected at port A/B

OFF: Optical signal loss is not detected at port A/B

ALM

General optical alarm indicator, red

ON: Optical Alarm present on local device

Blink: there is alarm or performance transmitting to the MCU

OFF: No alarm on the interface

RUN Running indicator, green.


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BLINK: Device works normally

ON or OFF: Abnormal working status

3.3 Jumper settings

Optical A

Optical B

DO1

J2

J3

ENABLE DISABLE

ENABLE DISABLE

TelecomBus

Fig. 3-3-1 Jumper settings

Table 3-3-1 Jumper settings

ID Meaning Default Remarks

J2Enabling/disabling

ALS of optical port BDisable

If the jumper is connected to Enable point,

the ALS is enabled, otherwise, it is disabled.J3

Enabling/disabling

ALS of optical port ADisable

3.4 ALS Function

In order to minimize or eliminate risk of exposure to laser radiation from fiber breaks, all optical

interfaces in the RSM-I55C support the Automatic Laser Shutdown (ALS) function.

When an optical interface detects a Loss of Signal (LOS) for 800ms, it will enter into an ALS

state. The interface will then start sending a laser pulse in a certain interval periodically in order

to restore as the fiber is healed.


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Note: ALS should be disabled when measuring Average Optical Transmit Power and Receiving

Sensitivity.

3.5 Networking mode

There are 4 networking modes for DO1 card:

Mode 1: AB:CD:EF

In this mode, A-B, C-D and E-F make up their respective independent ring network; the traffic

on each ring adopts 1+1 path protection. If a DO1 card is plugged out of the device, the traffic

on that corresponding ring will be broken because the two optical ports protected by each other

are in the same DO1 card.

155CP

A

B

DO1

A

B

DO1

A

B

C

D

DO1

E

F

DO1

C

D

E F

Ring 1 Ring 2

Ring 3

155S

155S155S

Fig. 3-5-1 Mode1(AB:CD:EF)

Mode 2ACBDEF

In this mode, A-C, B-D, E-F make up their respective independent ring network, the traffic on

each ring adopts 1+1 path protection, and the traffic on card 1 and card 2 can be protected by

each other. Thus, if either card 1 or card 2 is plugged out of the device, the traffic on that

corresponding ring will not be broken. But there is no such protection for the card 3.


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155CP

A

B

DO1

A

B

DO1

A

C

C

D

DO1

E

F

DO1

B

D

E F

Ring 1 Ring 2

Ring 3

155S

155S155S

Fig.3-5-2 Mode 2(AC:BD:EF)

Mode 3AEBFCD

In this mode, A-E, B-F, C-D make their respective independent ring network, the traffic on each

ring adopts 1+1 path protection, and the traffic on card 1 and card 3 can be protected by each

other. Thus, if either card 1 or card 3 is plugged out of the device, the traffic on that

corresponding ring will not be broken. But there is no such protection for the card 2.

155CP

A

B

DO1

A

B

DO1

A

C

C

D

DO1

E

F

DO1

B

D

E F

Ring 1 Ring 2

Ring 3

155S

155S155S

Fig.3-5-3 Mode 3(AE:BF:CD)


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Mode 4ACBEDF

In this mode, A-C, B-E, D-F make up their respective independent ring network, the traffic on

each ring adopts 1+1 path protection, and the traffic on the three cards can be protected by

each other. Thus, if either card is plugged out of the device, the traffic on that corresponding

ring will not be broken.

155CP

A

B

DO1

A

B

DO1

A

C

C

D

DO1

E

F

DO1

B

E

D F

Ring 1 Ring 2

Ring 3

155S

155S155S

Fig.3-5-4 Mode 4(AC:BE:DF)

Note1: Make sure optical A of one NE must be connected with optical B of its neighboring NE.

Note2: Refer to 8 protection switch for the protection in details

3.6 Technical Parameters

Table 3-6-1 DO1 Environment requirements

Subject Description

Working temperature 045

Relative Humidity 95no condensation

Input DC voltage -36-72V DC

Power consumption 6W10


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Table 3-6-2 Parameters specified for STM-1 optical interfaces

Bit Rate 155.520Mb/s4.6ppm

Standard ITU-T G.957/G.958

Optical fiber ITU-T G.652/G.653, single mode

Work wavelength 1310nm (1550nm is optional)

Relay-free transmission

range

40Km (70~100Km transmission distance available, the user

should declare before ordering)

Sensitivity Better than -36dB

Connector FC (SC is optional, the user should declare before ordering)

Interface S-1.1

Table3-6-3 SDH NI output jitter parameters

Rate

kbit/s

Threshold Measure filter parameters

B1UIP-P(f1-f4) B2UIP-P(f1-f4) f1(Hz) f2(kHz) f3(MHz)

155520 1.5 0.15 500 65 1.3

Table3-6-4 STM-1 port input jitter and wander parameters

STM grade STM-1

UIP-P

A0(18s) 2800

A1(2s) 311

A2(0.25s) 39

A3 1.5

A4 0.15

Frequency

f0(Hz) 1.210-5

f12(Hz) 1.7810-4

f11(Hz) 1.610-3

f10(Hz) 1.5610-2

f9(Hz) 0.125


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f8(Hz) 19.3

f1(Hz) 500

f2(Hz) 6.5

f3(Hz) 65

f4(Hz) 1.3

Table3-6-5 REG jitter transfer characteristic

STM grade Type f0(kHz) P(db)

STM-1A 130 0.1

B 30 0.1

3.7 Network Management

DO1 supports network management based on PC via unified platform, refer to Refer to PC

management software user guide for more.


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4 Data Management Card - DMU

4.1 Introduction

Data Management card is a comprehensive functional module integrating network

management, timing, Cross-connection, EOW and subsidiary channels, it is the central or

innermost part of RSM-155C.

4.2 Front Panel

DMU B

USY

EOW

232

ETS

EX

EMU

ADDR

MSB

LSB

10

1

01

1 2 3 4 5 6 7 81 2 3 4 5 6 7 8ALM

RUN

MUTE

ALARM

Fig. 4-2-1 Front panel of DMU

Table 4-2-1 Interfaces and indicators on front panel

Name Description

EOW Engineering Order Wire Interface (Standard RJ-11 interface)

232

Serial network management interface and User channel interface

(RJ-45 interface), refer to Fig.4-2-2 and Table 4-2-5 for the cable

definition.

ETS

External Timing Source Interface, it provides external reference clock

input (T31) and output (T41), support SSM .Refer to Table 4-2-6 for

cable definition

EXExtendable Management Interface, Refer to Table 4-2-7 for cable

definition

EMU Ethernet network management interface (RJ-45 interface), for SDH

network management

BUSY

EOW indicator ,green

ON: EOW is on busy state

OFF: EOW is on idle state


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ALM

General alarm indicator, red

ON: any alarm showed in Table 4-2-3 and 4-2-4 present on local

device, Refer to Table 4-2-3 and Table 4-2-4 for details.


RUN

Running indicator, green.



Table 4-2-2 Switches on front panel

Name Functional Description

MUTEMute (the button is pressed):alarm tone is not allowed

Alarm (the button is released): alarm tone is allowed

ADDR

NE address switch

The range of the device address is from 00 to 98, which is set by the

address switch on the front panel. As Fig. 4-2-1shows, the left 4-digit of

the switch stands for tens of decimal figures, while the right 4-digit is

0--9. The code mode is 8421 BCD.

For example, the address of 10011000 is 98

Note: the device address is unique mark used for network element

management, as well as the number for phone. Different devices in a

network cant be set to the same address.

Conditions of ALM LED on the front panel lightening

Either the UALM or DALM occurring will make the ALM LED on the front panel of DMU lighten

Table4-2-3 The Details of Urgent (UALM) of system (SDH line)

No. Name Description

1 LOS Optical signals loss

2 LOF Optical signals loss of frame

3 MS_EXC Multiplexing section excess error code


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4 AU_LOP Loss of AU pointer

5 LOM Loss of multi-frame

6 HP_PLM High-order Path signal flag mismatch

7 HP_TIM High-order Path trace mismatch

8 HP_EXC High-order Path error bit exceed

9 TLOS Tributary loss

Table4-2-4 The Details of Non-urgent alarm(DALM) of system(SDH line)


1 MS_AIS Multiplex Section

2 MS_RDI Multiplex Section Remote Defect Indication

3 MS_DEG Multiplex Section Degraded

4 AU_AIS AU Alarm Indication Signal

5 HP_AIS Higher order Path Alarm Indication Signal

6 HP_RDI Higher order Remote Defect Indication

7 TU_LOP TU loss of pointer

8 TU_AIS TU Path Alarm Indication Signal

9 LP_RDI Lower order Path Remote Defect Indication

10 LP_PLM Lower order Path signal Mismatch

11 LP_AIS LP Path Alarm Indication Signal

12 TAIS Tributary Alarm Indication Signal


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232 Interfaces (RJ45 connector)

Fig. 4-2-2 Serial network management Interface and User channel Interface

Table4-2-5 Definition of Serial network management interface and User channel interface

Pin Definition Remarks

PIN1 Data-OUT Serial data outputRS232 level

PIN2 Data-IN Serial data inputRS232 level

PIN3 GND Ground

PIN4 - -

PIN5 - -

PIN6 GND Ground

PIN7 RSNM-IN Serial data inputRS232 level

PIN8 RSNM-OUT Serial data outputRS232 level

ETS interface (RJ45 connector)

Table4-2-6 Definition of ETS interface


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PIN1 T31PI Balanced E1 interface input P

PIN2 T31NI Balanced E1 interface input N

PIN3 - -

PIN4 - -

PIN5 - -

PIN6 - -

PIN7 T41PO Balanced E1 interface P-output

PIN8 T41NO Balanced E1 interface N-output

EX interface (RJ45 connector)

EX interface is used to create E1-based management network to facilitates the unite network

management of two or more possible distinct networks. It is very important to use an E1 cable

connected to the RJ45 interface (EX interface), as the medium, to implement the management

signal transmission.

155CPEX

NMS

Subnet A

Subnet B155S

155S

155S

155S

155S

Fig. 4-2-3 Application of EX

Table4-2-7 Definition of EX interface


PIN1 T31PI Balanced E1 interface input P

PIN2 T31NI Balanced E1 interface input N


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PIN3 - -

PIN4 - -

PIN5 - -

PIN6 - -

PIN7 T41PO Balanced E1 interface P-output

PIN8 T41NO Balanced E1 interface N-output

4.3 Jumper settings

J3

DMU

J1GND

T31

321

J4

TelecomBus

Fig.4-3-1 jumper settings of DMU

Table4-3-1 Jumper Settings


J1The signal mode

selection for T31

1 and 2 are

connected

2.048 Mb/s mode is selected for T31,thus, it

will receive the signal extracted from E1

stream of the external SDH/PDH equipment,

The status of this jumper is default settings

and should not be changed.

J3 JTAG debugging Connected The status of this jumper is default settings


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J4 Watch dog enabling Connected and should not be changed.


Table4-4-1 DMU Environment requirements

Subject Description




Power consumption 8W10

Table4-4-2 EMU interface characteristic

Subject Description

Bit rate 10/100Mb/s

ModeFull-Duplex and half-Duplex Auto-Negotiation.

Default: Auto-negotiation

Connector RJ45

Standard IEEE802.3/802.3U

Table4-4-3 ETS interface

Subject Description

Bit rate 2.048Mb/s50ppm

Coding HDB3

Impedance 120 balanced

Standard ITU-T G.703G.704G.823

Table4-4-4 EX interface

Subject Description


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Coding HDB3




DMU supports network management based on PC via unified platform, refer to PC



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5 E1 Tributary Card - 2MM21

5.1 Introduction

E1 tributary card- 2MM21, supports twenty-one ITU-T G.703 defined 2Mbits/s (E1) interfaces,

implement asynchronous mapping E1 traffic from each port into VC-12 channel. The card

processes VC-12 channel overhead and TU-12 pointer, performs configuration, alarm and

performance monitoring to each service channel; it also supports local loop back, remote loop

back and 1+1 path protection. Besides, its tributary interface cans also provide reference timing

source.

1

DO1

2MM21

155CP

2NTU-12PBX

2

NE1155SNE1

PBX

Fig. 5-1-1 Application of 2MM21

5.2 Feature

Provides twenty-one E1 tributary interfaces compliant with ITU-T G.703

HDB3 coding ,optional unbalanced/ balanced interfaces

processes VC-12 channel overhead and TU-12 pointer of forty-two tributaries

provides local loopback and remote loopback for failure located

1+1 path protection for E1 traffic

Supports firmware download locally and remotely without disturbance of existing traffic

supports network management based on PC via unified platform


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5.3 Front panel

Table 5-3-1 indicators on front panel

Name Description

ALM

Alarm indicator, red

ON: alarm present on local card,

Blink: there is alarm or performance transmitting to the MCU


RUN

Running indicator, green.



ALM

RUN

2MM21

14E1

58E1

912E1

1316E1

1720E1

2124E1

Fig. 5-3-1 2MM21 front panel and E1 interface


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5.4 DIP-Switch and Jumper settings

Fig.5-4-1 DIP-Switch and jumper of 2MM21

Table 5-4-1 Jumper settings


J3 Watch dog enabling Connected

The status of this jumper is

default settings and should

not be changed.J2

System earthling mode :

GND: system ground

VGND: power ground

EGND:E1 signal ground

PGND: protected ground

EGND-GND-PGND

Connected together

Table 5-4-2 DIP-Switch settings(S1)


1 Model 8 OFF Mapper access mode

2 BUSLP 8ON 18 E1 is loopback if BUSLP 8 is set OFF

3 BUSLP 16ON 921 E1 is loopback if BUSLP 16 is set OFF

4 NC Not used


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2MM21 supports network management based on PC via unified platform, refer to Refer to PC



Table 5-6-1 2MM21 Environment requirements

Subject Description




Power consumption

Initialization: 11W

Running: 5.5W

Table5-6-2 E1 interface

Subject Description


Coding HDB3

Impedance 75 unbalanced. 120 balanced is optional


Table5-6-3 PDH NI output jitter parameters

Rate

kbit/s

Threshold Measure filter parameters

B1UIP-P(f1-f4) B2UIP-P(f1-f4) f1(Hz) f2(kHz) f3(MHz)

2048 1.5 0.2 20 18 100

Table5-6-4 PDH port input jitter and wander parameters

Rate kbit/s 2048


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UIP-P

A0 36.9(18s)

A1 1.5

A2 0.2

A3 18

Frequency

f0(Hz) 1.210-5

f10(Hz) 4.8810-3

f9(Hz) 0.11

f8(Hz) 1.667

f1(Hz) 20

f2(Hz) 2.4

f3(Hz) 18

f4(Hz) 100

PRBS 2015-1

5.7 2MM cable

Fig.5-7-1 2mm cable


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4, #4 E1 Outa18, #4 E1 Ind1

3, #3 E1 Outa37, #3 E1 Ind32, #2 E1 Outa46, #2 E1 Ind41, #1 E1 OutA65, #1 E1 Ind6

Fig.5-7-2 2 Pin assignment of dentist connector(75 )

Note: RSM-155C also provides another kind of tributary card: Ethernet mapping card, such as

ES011, E4004 and so on. Refer to the corresponding user handbook for details.


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6 Data Backup card - DBU

DBU is a spare management card when DMU failed to work, it backup some important data

such as cross-connection, network management, timing and so on

Fig. 6-1 DBU card


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7 Network applications

RSM-155C can be used as Terminal Multiplexer (TM) or an Add-Drop-Multiplexer (ADM) to

build a point-to-point, ring or chain transmission network. As following figure shows:

7.1 Chain Network

155CP155S

155S

Fig.7-1 Chain network.

7.2 Ring Network

RSM-155C can form ring network, even multi-ring, as the hinge node of telecom transmission

network, see Fig.7-2.

155CP

155S

155S 155S

155S

155S155S

Fig.7-2 Ring network

Note: in this network application, make sure to choose the appropriate networking mode.

7.3 Notice

a. In any type of networking mode, the timeslot which have been assigned to a traffic is

forbidden to be assigned to the other traffic again. For example, under AC:BD:EF


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networking mode, if timeslot 1-10 of optical A has been assigned to a traffic ,timeslot 1-10

of optical B should not be assigned to different traffic since it has been automatically

assigned to the same traffic as timeslot of optical A did.

b. Under AEBFCD networking mode, the new added card is forbidden to plug into the forth

slot.

c. Under AC:BD:EF networking mode, if optical A and C build a star type network, as Fig.7-4-c

shows, optical A connect to a device155S belonging to a network, and optical C connect to

a device RSM-155C belongs to another network, the timeslot which have been assigned to

optical A is forbidden to be assigned to optical C again.

Fig.7-4-c Star type I

d. Under AC:BD:EF networking mode, if optical A and C build a star type network, as

Fig.7-4-d shows, optical A connect to device155S belonging to a network, and optical C

connect to device 155S belonging to another network. In the case of optical A failing, the

service interruption caused by optical fiber A broken cannot be restore to normal state even

if fiber A reconnection again. In that case, reassign the timeslot to port A can restore the

service (All that will take effective after do Activate configuration operation.)


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Fig.7-4-d Star type II

e. Try not to build a star type network in ring network as above, avoid separating the

selfprotect optical port pair to build two networks respectively.


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8 Protection Switch

RSM-155C support both 1+1 path protection switch and 1+1 sub-network protection switch

function. And temporarily, RSM-155C doesnt support 1+0 service. For example, under

AB:CD:EF networking mode, if timeslot 1-10 of optical A has been assigned to a traffic ,timeslot

1-10 of optical B should not be assigned to different traffic since it has been automatically

assigned to the same traffic as protected timeslot .

8.1 1+1 Path Protection

In 1+1 path protection mode, the client traffic is always transmitted over the working and

protection path (or time slot) simultaneously. Each protection path has the same TU12 No. as

the working paths and it cannot be assigned to other traffic. At the sink end, the destination

tributary card detects the received signal and selects the path which is carrying the better

quality signal. In the case of fiber broken or alarm occurred (such as TU-LOP, TU-AIS), the

destination tributary card detects the fault and automatically select the incoming traffic from the

protection path.

Fig. 8-1 Ring Network

As Fig.8-1 shows, under AB:CD:EF networking mode, take A-B ring for example, the traffic is

transmitted over both the path of port A and path of port B simultaneously. At the sink end,

controlled by the destination tributary card, the normal traffic signal is selected from the better


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of the two ports. In the case of fiber A broken, the destination tributary card detects the fault

and automatically select the incoming traffic from the path of port B.

In tributary card, the operator can do force to switch once and switch to initial status by PC

management software. For Refer to PC management software user guide for more.

8.2 1+1 SNCP

SNCP based on cross-connection matrix, it is similar with 1+1 path protection, but at the sink

end, it is destination DMU card, not the destination tributary card, detects the received signal

and selects the path which is carrying the better quality signal.

Fig. 8-2 Ring Network

As Fig.8-2 shows, under ABCDEF networking mode, take Ring1 and Ring2 for example,

configure timeslot assignment via PC network management software (refer to PC

management software user guide) according to the following example: cross-connect timeslot

A and timeslot CA Cthen three links are formed automatically: A DB C

B D. that is, traffic from optical A/B is transmitted toward optical C and D simultaneity, at

sink end (optical C and optical D), the traffic is detected and selected from the better of two port

(A and B); while the traffic from C/D is transmitted toward optical A and B simultaneity, at sink

end (optical A and optical B), the traffic is detected and selected from the better of two port(C

and D).


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9 System installation

!Guard against:

-1 Laser: laser ray can hurt human eye, do not look the fiber connector straightly.

-2 Static electricity: Before installing the card, operators must wear anti-static

electricity bracelet.

Installation of RSM-155C system should be performed by engineers with qualification for

telecommunications equipment installation. Before system installation, the user should check

the completeness of equipment packing and existence of any transport damage to the

equipment based on Packing List; further check correctness of equipment model,

completeness of fittings; stop the installation in case of any obvious defect or error, and contact

the supplier.

9.1 System sub rack installation

For the first installation of the system, all the cards listed in the Packing List have already been

installed; the user only needs to install the subrack according to the contents of this section.

Check whether the subrack complies with ETSI standard, it should be able to install ETSI

standard 19 equipment bracket and provides -48VDC power supply assignment part.

RSM-155Cs subrack occupies 6U height of space on the open rack, so there should leave at

least 8U of space for the installation. The distance between the adjacent equipment must no

less than 1U. As for installation of the open rack, it should be placed on the 19 bracket, with

the front outward; use external hexagonal screwdriver, fix the mounting holes on the two sides

of RSM-155C sub rack by using M6 bolts. Besides, RSM-155C system adopts natural wind

cooling mode.

9.2 Data management card installation

Fig.9-2-1 shows installation of Data Management card.

Connect the Reference timing signals The external reference timing signals (T3/T4,


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2MHz/2Mb) are introduced through ETS port in the front panel of DMU.

Connect EOW interface (EOW) Take out the EOW telephone set from the accessories bag,

insert RJ-11 plug into the EOW port of DMU. Operation procedure is shown in Fig.9-2-2.

Set the NE address

In an RSM-155 family, for the network management, each equipment should take an unique

hardware address. The address is set by the switch manually. The coding method is simple

BCD, while the address could be 00~99 in decimal.

EXP: NE Address=24 ON=1

1 2 3 4 5 6 7 8

Connect NMS There are two ways to connect to NMS: 10/100M Ethernet port (EMU) or

RS232 serial port (232). In case of Ethernet mode, crossed line is adopted. In case of RS232

mode, RS232 cable must be connected to 232 port. Operation procedure is shown in Fig.9-2-4.

If there is another RSM-155C belong to another network, which is managed by the NMS, EX

port is provided to create E1-based management network to facilitates the unite network

management of two or more networks.See Fig.9-2-5.

0 1 0 0 1 0 00


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Fig.9-2-1 Data Management card installation

Fig.9-2-2 Connect EOW set

Fig.9-2-3 Set the NE address


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Fig.9-2-4 Connect EMS port

Fig.9-2-5 Joint the two RSM-155C belong to deferent networks


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9.3 Line card (DO1) installation

Installation steps of aggregate line card are the same with above section. Usually, each line

port provides a pair of laser connectors (RX and TX). Note the label in the front panel, which

should not be wrongly connected. See Fig.9-3

Fig.9-3 Connect STM-1 optical port

9.4 Tributary card (2MM21) installation

The operation procedure is similar to installing DMU. Within RSM-155C, it only provides 75ohm

interface; for 120ohm, external impedance converter (IMP) is required. E1 interface is led out

from 11 columns of sockets (Slot4C~14C) in the backplane; each column of sockets can

accommodate six 2mm connectors; each 2mm connector can lead out four signals to E1

tributary. For access of 2mm connecting cable, see Fig.9-4 .


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Fig.9-4 Use 2mm cable to lead out E1 tributaries

9.5 System check

9.5.1 Visual checking

Through visual checking, it is possible to quickly find out failure or damage; basic contents

of visual checking are:

Whether there is any obvious wrong installation in every part of equipment;

Reliable fixing of all mechanical parts;

Optical fiber is connected onto the optical interface;

All cables have been connected.

9.5.2 Power on check

Before the systems first power on, the following should be checked:

1. AC input voltage value is within the allowed range;

2. Power supply switch is at OFF position;

3. The fuse is installed and in good condition.

About grounding

There may be certain potential difference between GND wires of two separate equipments.

When two parts of one system need to be installed at two locations, and they are mutual

connected, the potential may cause system damage or performance degrading. Therefore,

before the connection, the potential must be avoided, as Fig.9-5-2 shows.

1-lead out #1~#4 E1

2- Lead out #5~#8 E1

3- Lead out #9~#12 E1

4- Lead out #13~#16 E1

5- Lead out #17~#20 E1

6- lead out #21 E11


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Earth Ground

Power Supply

PGND GND -48VDC

-48VDC

GND

-48VDC

GND

Fig.9-5-2 Grounding

Suggestion: The chassis of device should be connected to the protection ground. We

strongly recommend you to make sure to connect the PGND connector on the back panel to

the earth of the telecommunication house in a reliable way. Also, be careful of the connectors

polarity, reverse connection is forbidden.

RSM-155C uses -48VDC, and the full current consumption is about 2A. On the power cable, no

heavy load or walk is allowed, and reinforce plate should be installed if necessary. It is

recommended to connect the power source with power cable which diameter no less than 2mm;

note that polarity of power cable should not be reversed, and the protective ground and voltage

ground should be separated.

Close the boat switch on the left side of the fuse, power on the system. If the power supply

indicator light (RUN LED) in the front panel of DMU is lit, it means the equipment power on

normally. At this point, note that the equipment should be free from any abnormality; in case of

smell of scorching and obvious heat, the power should be shut down at once.


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10 Device management

RSM-155C supports network management platform based on SNMP (V1 and V2C) to complete

configuration management and kinds of alarm monitoring. The devices default IP address is

192.168.0.156, subnet mask is 255.255.255.0, and gateway is 192.168.0.1. The Media Access

Control address (MAC) is unique, sticking on DMU card.

With the super PC management software, the configuration can be executed (such as setting

clock, enable/disable ALS, protection switching settings, Ethernet settings and so on), the

alarm & status can be monitored, and the trouble can be fixed up by loop back and BERT

testing. Refer to PC management software user guide for more.


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11 EOW

11.1 Introduction

EOW (Engineering order wire) unit uses E1 section overhead bytes to implement the

site-selection call among SDH subnets.

11.2 Steps in configuration

A. Take point-to-point network application as example, connect the two devices by fiber in

point-to- point mode, make sure that the optical B of NE2 is connected with optical A of NE1,

and optical A of NE2 is connected with optical B of NE1, as figure 11-2-1 shows:

Figure 11-2-1

B. Enable the two equipments to power on, if the EOW channel between the two devices are

occupied and their respective BUSY indications on the front panel are on, press the #

key or hook off and hook on the handset to restore the channel to idle state and make sure

EOW works properly (make BUSY indication off).

C. The calling party (here take NE1 as the calling party) hooks-off and hears dialing tone,

meanwhile both sides are on busy status and their respective BUSY indications are on.

D. The calling party dials the correct number to call (as figure 11-2-1 shows, the NE2 address

is 22, so the correct number is 22), the called party rings at the same time, otherwise the

calling party will not hear the ring back tone. As figure11-2-2 shows:


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Figure 11-2-2

E. After the called party hooks-off, the two parties enter talking status. As figure 11-2-3 shows:

Figure 11-2-3

F. If the calling party hooks on first, the called party will hear busy tone, after the called party

hooks on, both sides will on idle status and their respective BUSY indications are off. As

figure 11-2-4 shows;

Figure 11-2-4

If the called party hooks on first, the calling party will hear no busy tone, after the calling

party hooks on, both sides will on idle status and their respective BUSY indications are

off. As figure 11-2-5 shows;

Figure 11-2-5

11.3 Note

aFiber A of each device must be connected with fiber B of the adjacent device.


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bAs the equipments power on or optical fiber be reconnected, if the EOW channel will be

occupied and the respective busy indications on the front panel of each equipments are on,

do pressing the # key or hook off and hook on operation to restore the channel to idle

state and make sure EOW works properly (make BUSY indication off).

c If calling party hears busy tone when hooking off the handset, do pressing the # key or

hook off and hook on operation to restore the channel to idle state, therefore, the next

conversation may cruise to the final.


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12 Technical parameters

Table 12-1 Device dimension and weights

Subject Description

Dimension 483mm265mm295mm(width height depth)

weights 12kg(Fully equipped weight)

Table 12-2 Environment requirements

Subject Description



Atmospheric pressure: 70~106 Kpa

Table 12-3 Power supply

Subject Description

Input DC voltage -36 ~ -72V DC

Power consumptionFully equipped power consumption: 70W10%

Table 12-4 RSM-155C system interface summary

No. Category Qty

1 Aggregate optical interface (STM-1) 16

2 Tributary E1 electrical interface 8231

3 10/100Base-T Ethernet electrical interface 888

4 EOW interface 1

5 Serial network management interface(232) 1

6 10Base-T Network management interface(EMU) 1

7 Expanded network management interface(EX) 1

8 External timing signals interface(ETS) 1


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Table 12-5 Optical interface data summary

Bit Rate 155.520Mb/s4.6ppm

Standard ITU-T G.957/G.958

Optical fiber ITU-T G.652/G.653, single mode

Work wavelength 1310nm (1550nm is optional)

Relay-free transmission

range

50Km (70~100Km transmission distance available, the user

should declare before ordering)

Sensitivity Better than -36dB

Connector FC (SC is optional, the user should declare before ordering)

Interface S-1.1

Table 12-6 E1 Tributary interface

Bit Rate 2.048Mb/s50ppm

Encoding HDB3

Standard ITU-T G.703

Connector 2mm high density connector

Impedance 75 non-balanced (120 balanced is optional)

Jitter performance Comply ITU-T G. 823

Table 12-7 Ethernet interface features

Bit Rate 10/100M self-adapting

Mode Full/half duplex self-negotiation

Standard IEEE 802.3

Interface RJ-45 connector

Table 12-8 ETS interface



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Coding HDB3

Interface RJ45 connector

Table 12-9 EX interface




Coding HDB3

Interface RJ45 connector

Table 12-10 232 Interface(as network management Interface )

Baud rate 19200

bits 8

Stop bit 1

parity check None

Electricity level EIA-RS232 standard


Table 12-11 232 Interface(as User channel Interface)

Maximum bit rate 9600

Electricity level EIA-RS232 standard


Table 12-12 Ethernet management interface(EMU)

Bit rate 100Mb/s

Connector RJ45


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Appendix Related documents

Table A-1 RSM-155C Related documents list

Item Name Remarks

1 PC management software User guide

2 ETM2A User Handbook

3 E4004 User Handbook

4 ES011 User Handbook

5 E4114 User Handbook

RSM 155C User Handbook V1.10

Documents

Transcript of RSM 155C User Handbook V1.10