RC954 SERIES USER MANUAL

www.raisecom.com

RC954 Series Modular Protocol Converter User Manual 200704

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Contact Information

Technical Assistance Center

The Raisecom TAC is available to all customers who need technical assistance with a Raisecom product, technology, or, solution. You can communicate with us through the following methods:

Add: 1120, Haitai Tower, 229 Fourth North Loop Middle Road, Haidian District, Beijing

100083

Tel: +86-10-82884499 Ext.878 (International Department)

Fax: +86-10-82885200, +86-10-82884411

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We hope to hear from you!

4

CONTENTS Chapter 1 Overview--------------------------------------------------------------------------------------8

1.1 Main features ----------------------------------------------------------------------------------------------------------------------8 1.2 Device naming rules ------------------------------------------------------------------------------------------------------------8 1.3 Device exterior and size -------------------------------------------------------------------------------------------------------9

Chapter 2 Technical Parameters------------------------------------------------------------------- 10 2.1 Product basic configuration --------------------------------------------------------------------------------------------------- 10 2.2 Ethernet interface property----------------------------------------------------------------------------------------------------- 10

2.2.1 Electrical interface --------------------------------------------------------------------------------------------------------------------------------- 10 2.2.2 Optical interface------------------------------------------------------------------------------------------------------------------------------------ 10

2.3 E1 interface property ------------------------------------------------------------------------------------------------------------- 10 2.4 Power supply------------------------------------------------------------------------------------------------------------------------ 11 2.5 Operating environment ---------------------------------------------------------------------------------------------------------- 11

Chapter 3 Structure and Indicator Definition-------------------------------------------------- 12 3.1 Structure and indicator definition-------------------------------------------------------------------------------------------- 12 3.2 Dip switch instruction------------------------------------------------------------------------------------------------------------ 18

Chapter 4 Application mode ------------------------------------------------------------------------ 23 Chapter 5 Installation and Testing ---------------------------------------------------------------- 24

5.1 Cautions ------------------------------------------------------------------------------------------------------------------------------ 24 5.2 Installation process --------------------------------------------------------------------------------------------------------------- 24

5.2.1 Setup dip switch------------------------------------------------------------------------------------------------------------------------------------ 24 5.2.2 Connect service Ethernet interface------------------------------------------------------------------------------------------------------------ 24 5.2.3 Connect E1 cable---------------------------------------------------------------------------------------------------------------------------------- 24 5.2.4 Electrify ----------------------------------------------------------------------------------------------------------------------------------------------- 24 5.2.5 Configure services--------------------------------------------------------------------------------------------------------------------------------- 24

5.3 Cable preparation------------------------------------------------------------------------------------------------------------------ 25 Chapter 6 Troubleshooting-------------------------------------------------------------------------- 26 Appendix A DB37 Connector – E1 Cable Pin Definition--------------------------------------- 27 Appendix B RJ45 Connector – E1 Cable Pin Definition --------------------------------------- 28 Appendix C Specialized Vocabulary and Acronyms-------------------------------------------- 29

5

Preface

Who Should Read This Manual

This document is for professionals who have the knowledge of configuring RC954 series devices. It introduces the principle and properties of function modules of RC954 series devices systematically. It is also a configuration guide of the modules.

Relevant Manuals

《RC954-FE(FX)4E1 User Manual》

Organization The core content of this user manual is composed of six chapters:

Chapter 1 Overview

Chapter 2 Technical parameters

Chapter 3 Structure and indicator definition

Chapter 4 Application mode

Chapter 5 Installation and testing

Chapter 6 Troubleshooting

Compliance

The RC series products developed by Raisecom are strictly complied with the following standards as well as ITU-T, IEEE, IETF and related standards from other international telecommunication standard organizations:

YD/T900-1997 SDH Equipment Technical Requirements - Clock

YD/T973-1998 SDH 155Mb/s and 622Mb/s Technical conditions of optical transmitter module and receiver module

YD/T1017-1999 Network node interface for the Synchronous Digital Hierarchy (SDH)

YD/T1022-1999 Requirement of synchronous digital hierarchy (SDH) equipment function

YD/T1078-2000 SDH Transmission Network Technique Requirements-Interworking of Network Protection Architectures

YD/T1111.1-2001 Technical Requirements of SDH Optical Transmitter/Optical Receiver Modules——2.488320 Gb/s Optical Receiver Modules

YD/T1111.2- 2001 Technical Requirements of SHD Optical Transmitter/Optical Receiver Modules——2.488320 Gb/s Optical Transmitter Modules

6

YD/T1179- 2002 Technical Specification of Ethernet over SDH

G.703 Physical/electrical characteristics of hierarchical digital interfaces

G.704 Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical levels

G.707 Network node interface for the synchronous digital hierarchy (SDH)

G.774 Synchronous digital hierarchy (SDH) - Management information model for the network element view

G.781 Synchronization layer functions

G.783 Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks

G.784 Synchronous digital hierarchy (SDH) management

G.803 Architecture of transport networks based on the synchronous digital hierarchy (SDH)

G.813 Timing characteristics of SDH equipment slave clocks (SEC)

G.823 The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy

G.825 The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH)

G.826 End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections

G.828 Error performance parameters and objectives for international, constant bit-rate synchronous digital paths

G.829 Error performance events for SDH multiplex and regenerator sections

G.831 Management capabilities of transport networks based on the synchronous digital hierarchy (SDH)

G.841 Types and characteristics of SDH network protection architectures

G.842 Interworking of SDH network protection architectures

G.957 Optical interfaces for equipments and systems relating to the synchronous digital hierarchy

G.691 Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers

G.664 Optical safety procedures and requirements for optical transport systems

I.731 ATM Types and general characteristics of ATM equipment

I.732 ATM Functional characteristics of ATM equipment

IEEE 802.1Q Virtual Local Area Networks (LANs)

IEEE 802.1p Traffic Class Expediting and Dynamic Multicast Filtering

IEEE 802.3 CSMA/CD Access Method and Physical Layer Instruction

7

Cautions

Please read the following proceedings with caution before installing and using RC954 series devices and operate follow the instructions in this manual strictly. Raisecom will not take any responsibility for the loss caused by violation of the proceedings listed below.

The installing, maintaining, plugging in and pulling out of any components can only be operated by qualified technician following static electricity resistance procedures. The power supply should be grounded.

Please install the device in a temperature and humidity controllable room. Please be aware of the conductivity of the materials around the device.

Please avoid acute shake and collision to protect fine parts in the device. Please do not disassemble or repair the device by yourself, for this may cause unrecoverable damage to the device. Raisecom will regard any self-conducted disassembly of the device as

abandon of warranty.

8

Chapter 1 Overview

RC954 series products are E1 protocol converters with inverse multiplexer function. They are designed to be applied to RC002 chassis of Raisecom. RC954 series products are equipped with 1 or 2 user Ethernet interfaces and 4 or 8 E1 interfaces. They are mainly used to transmit or receive Ethernet operations with band width range from 2Mbps to 16Mbps.

At this stage, RC954 series products include RC954-FE/FX4E1, RC954-FE/FX4E1-BL, RC954-2FE4E1-BL and RC954-2FE8E1-BL. Ethernet interface can be chosen from electrical interface and optical interface. RC954-FE/FX4E1-BL occupies one slot and can be plug into RC002 series single-slot or multi-slot chassis. RC954-FE/FX4E1, RC954-2FE4E1-BL or RC954-2FE8E1-BL occupies two slots and can be plug into RC002 series dual-slot or multi-slot chassis.

1.1 Main features

4 or 8 E1 interfaces 1 or 2 Ethernet interfaces

Electrical interface: AUTO-NEGOTIATION, AUTO-MIDX, 10M/100M, Full/Half Duplex, 802.3x supported under full-duplex mode, back-pressure flow control supported under half-duplex mode.

Optical interface: 100FX E1 inverse multiplexer mode:

Transmit Ethernet frame to multiplex E1 using inter-frame interpolation. Auto-recognition of E1 link pin arrangement Maximal relative time delay of E1 link is +/-16ms Automatic setup and removal of E1links. Only framed mode is supported by E1 port; FAS+CRC4 PCM31 format is adopted;

user-configurable CRC self-adaptation. HDLC frame format encapsulation for Ethernet data E1 loop-back testing Error detector supported Rich E1 circuit information displaying on the panel E1 interface type: balanced and unbalanced.

Users can select a type using dip switch or by selecting different modules. All-around network management supported Card device for RC002 single-slot or multi-slot chassis Power consumption < 5W, stable and reliable operating. Operating temperature: -5~50

1.2 Device naming rules

All devices are composed of circuit board and power supply board.

RC954 series devices naming rule: RC954 – A – B – C

Explanation:

RC954: E1 protocol converters with inverse multiplexer function which are designed for RC002 series chassis.

A: FE type and the number of E1 interface, could be FE4E1, FX4E1, 2FE4E1, 2FE8E1

FE4E1: Electrical FE interface, 4E1

9

FX4E1: Optical FE interface, 4E1

2FE4E1: 1 electrical FE interface and 1 optical FE interface, 4 E1

2FE8E1: 1 electrical FE interface and 1 optical FE interface, 8 E1

B: E1 interface type. BL indicates that the interface is a balanced interface. No specification of this term indicates that the interface is unbalanced or the type can be selected using dip switch.

C: Ethernet optical interface type. Only applicable to Ethernet optical interface, could be M, S1, S2, S3, SS13, SS15, SS23, SS25, S15, and etc.

Type Wavelength Distance

M Multi Mode, 1310nm [1] 0-2km

S1 Single Mode, 1310nm 0-25km



SS13 Single Mode, Transmit, 1310nm

Single Mode, Receive, 1550nm

0-25km



0-25km



10-50km



10-50km


[1] For multi mode optical emitter, both wavelength 850nm and 1310nm are available. The default wavelength is 1310nm. 850nm multi mode optical emitter will only be made to order.

For detailed available product list, please refer to product ordering information.

1.3 Device exterior and size

RC954-FE/FX4E1-BL: occupies one slot, 25.2nm(Width) × 91mm(Height) × 172mm(Depth)

RC954-FE/FX4E1, RC954-2FE4E1-BL, RC954-2FE8E1-BL: occupies two slots (one for master card, the other for E1 interface sub card), 50.5nm(Width) × 91mm(Height) × 172mm(Depth)

10

Chapter 2 Technical Parameters

2.1 Product basic configuration

Master card: a FE electrical interface or a FE optical interface or an integral electro-optical interface; a chassis backboard interface

Sub card: 4 or 8 E1 interfaces

2.2 Ethernet interface property

2.2.1 Electrical interface Rate: 10/100M self-adaptation Interface: RJ-45 Compliant to IEEE802.3 802.3x flow control Pin arrangement as host mode; AUTO-MIDX supported

2.2.2 Optical interface Rate: 100M Interface: SC

2.3 E1 interface property

4 or 8 E1 interface; can be configured to single channel mode or inverse multiplexer mode E1 inverse multiplexer mode:

Transmit Ethernet frame to multiplex E1 using inter-frame interpolation. Auto-recognition of E1 link pin arrangement Maximal relative time delay of E1 link is +/-16ms Automatic setup and removal of E1links. Only framed mode is supported by E1 port; FAS+CRC4 PCM31 format; user-configurable

CRC self-adaptation. HDLC frame format encapsulation for Ethernet data E1 loop-back testing Error detector supported 512K Bytes buffer for every channel in the direction from Ethernet to E1 Bit rate: 2048Kbps±50ppm Code pattern: HDB3 Input impedance: 75Ω unbalanced or 120Ω balanced; can be selected using dip switch Interface: DB37 male connector or RJ-45 balanced interface Electrical characteristics: compliant to ITU-T G 703 Frame structure: compliant to ITU-T G704 Jitter: compliant to ITU-T G823 1 or 2 panel indicator for every E1 link (different definition for different device, please check silk

printing on the panel and correspond it to the instructions below) LAR: Local total alarms, includes LOS (Loss of Signal), AIS (Alarm Indication Signal), LOF

(Loss of Frame), CRC (Cyclic Redundancy Check). RAL: Remote total alarms, includes LOS, AIS, LOF, CRC LOS: Local LOS alarm, loss of local signal

Dip switch on the master card realizes the following control operation: Master/Slave management setting Enable/Disable loop-back control Remote/Local loop back selection Error detector setting

11

Configuration of self-adaptation/rate/full-duplex function for Ethernet electrical interface Clock selection

Accept local management through backboard communication; execute in-band management on remote side through E1

2.4 Power supply

Voltage of power supply: DC 5V, allowance range from 4.5V to 5.5V Power consumption: <5W

2.5 Operating environment

Temperature: -5～50 Relative humidity: ≤90%(35)

12

Chapter 3 Structure and Indicator Definition

3.1 Structure and indicator definition

Figure 5-1 RC954-FE4E1 Structure

Figure 5-2 RC954-FX4E1 Structure

Table 5-1 is an instruction of the panel of RC954-FE/FX4E1.

Table 5-1 RC954-FX4E1 panel instructions

Serial number

Title Color of indicator

Description

1 PWR indicator Green The nether indicator on the left of Ethernet electrical interface

Power supply indicator PWR

13

On: the power supply is working normally

2 Ethernet electrical interface

Green Only applicable to Ethernet electrical interface.

RJ-45 interface; 3 indicator

LNK/ACT: The upper indicator on the left of Ethernet electrical interface

On: link has been connected successfully

Flickering: data transmitting or receiving

Off: Link has not been set up

100M: The upper indicator on the right of Ethernet electrical interface

On: Link is working at 100M

Off: Link is working at 10M

FDX: The nether indicator on the right of Ethernet electrical interface

On: Link is working in full-duplex mode

Off: Link is working in half-duplex mode

3 Ethernet optical interface

Green Only applicable to Ethernet optical interface.

SD interface; 2 indicator

LNK/ACT: The upper indicator on the right of Ethernet optical interface



Off: Link has not been set up

SD: The nether indicator on the right of Ethernet optical interface

On: optical signal has been detected

Off: optical signal has not been detected

4 E1 interface － E1 interface is a DB37 male connector

Special cable should be applied to convert DB37 male connector to DNC or RJ-45 connector.

5 E1 indicator Red or Yellow

For every E1, there is an L indicator and an R indicator.

L: Local total alarms

Red On: LOS alarm

14

Red Flickering: AIS alarm

Yellow On: LOF alarm

Yellow Flickering: CRC alarm

OFF: No alarm

R: remote total alarm

Red On: LOS alarm




Off: No alarm

In addition: Both L and R indicators are turned on indicates GID alarm

Figure 5-3 RC954-FE4E1-BL structure

Table 5-2 is an instruction of the panel of RC954-FE/FX4E1.

Table 5-2 RC954-FE/FX4E1 panel instructions

Serial number


Description

1 A, B, C, D four E1 line indicators

Three colors

A, B, C, D four E1 line indicator

Every E1 has a local total alarm indicator E1 LAL:

Red On: LOS alarm




OFF: No alarm

15

2 A, B, C, D four E1

balanced interface

－ Provide four lines of E1, 120Ω balanced signal by the combination of 2 RJ-45 sockets

A, B common RJ-45 interface

A: core 1 and 2 output

core 4 and 5 input

B: core 3 and 6 input

core 7and 8 output

C, D common RJ-45 interface

C: core 1and 2 output

core 4 and 5 input

D: core 3and 6 input

core 7 and 8 output

Before making balanced cable, please read pin arrangement instruction with caution to ensure correct pin arrangement.

3 Ethernet electrical interface indicator

Green LNK/ACT: the left indicator on the top of Ethernet electrical interface


Off: Link has not been connected


100M: the right indicator on the top of Ethernet electrical interface

On: link is working at 100M

Off: link is working at 10M

FDX: the upper indicator on the right of Ethernet electrical interface

On: Link is working in full-duplex mode

Off: link is working in half-duplex mode


－ RJ-45 interface; 3 indicators

5 PWR Green Power supply indicator PWR: the nether indicator on the right of Ethernet electrical interface

On: the power supply is working properly

16

Figure 5-4 RC954-FX4E1-BL structure

Table 5-3 is an instruction of the panel of RC954-FX4E1-BL.

Table 5-3 RC954-FX4E1-BL panel instructions

Serial number


Description

1 PWR Green Power supply indicator PWR


2 E1 indicator Red On the top of the four E1 interface

Red On: LOS occurs on E1

Red Off: E1 is working properly

3 4 E1 interface － RJ-45 interface

2 RJ-45 interfaces make up of 4 E1 interfaces

Every RJ-45 interface comprises 2 E1

4 Ethernet optical interface － 100M FX SC interface

TX: optical signal output

RX: optical signal input

5 Ethernet optical interface indicator

Green SC interface, 2 indicators

LNK/ACT: the upper indicator on the right of Ethernet optical interface



Off: Link has not been connected

SD: the nether indicator on the right of

17

Ethernet optical interface

On: optical signal has been detected

Off: optical signal has not been detected

Figure 5-5 RC954-2FE4E1-BL Structure

Figure 5-6 RC954-2FE8E1-BL structure

Table 5-4 is an instruction of the panel of RC954-2FE4E1-BL and RC954-2FE8E1-BL

Table 5-4 RC954-2FE4E1-BL and RC954-2FE8E1-BL panel instructions

Serial number


Description

1 PWR Green Power supply indicator PWR


2 Ethernet optical interface

Green SC interface, 1 indicator

LNK/ACT: the upper indicator on the left of Ethernet optical interface

18

On: Link has been connected successfully


Off: link has not been connected

3 E1 interface － RJ-45 interface

RC954-2FE4E1-BL:



RC954-2FE8E1-BL:




－ RJ-45 interface, 2 indicators

5 Ethernet electrical interface indicator

Green RJ-45 interface, 2 indicators

LNK/ACT: the left indicator on the top of Ethernet electrical interface


Off: link has not been connected


100M: the right indicator on the top of Ethernet electrical interface

On: link is working at 100M

Off: link is working at 10M

6 E1 indicator Red LOS indicator:

Red On: LOS alarm

Red Off: normal

3.2 Dip switch instruction

On the motherboard of RC954-FE/FX4E1, a dip switch SW3 is available to control the operation mode of the device (can be adjusted to user need).

19

Switch digit Definition Switch serial number Serial

number Title Function ON OFF

1 MMD Management mode setting

Master device Slave device

2 LPEN Loop-back enabling setting

Enable loop back

Disable loop back

3 LPMD Loop-back mode setting

Local loop back when loop back is enabled

Remote loop back when loop back is enabled

4 BERT Error detector function setting

Turn on E1 error testing function

Turn off E1 error testing function

5 AN Ethernet electrical interface auto-negotiation setting

Disable Ethernet self-adaptation

Enable Ethernet self-adaptation

6 SPD Ethernet electrical interface rate setting

Force Ethernet to work at 10Mbps when self-adaptation is forbidden.


7 DPX Ethernet electrical interface duplex setting

Force Ethernet to work under half-duplex mode when self-adaptation is disabled

Force Ethernet to work under full-duplex mode when self-adaptation is disabled

SW3

8 TMD E1 clock mode setting

Slave clock Master clock

On the motherboard of other RC954 series devices (exclude RC954-FE/FX4E1), a dip switch SW3 is available to control the operation mode of the device (can be adjusted to user need).

Switch digit Definition Switch serial number

Serial number

Title Function ON OFF

20

1 MMD Management mode setting

Force to slave device

Self-adaptation

2 LPEN Loop-back enabling setting

Enable loop back

Disable loop back

3 LPMD Loop-back mode setting

Local loop back when loop back is enabled

Remote loop back when loop back is enabled

4 BERT Error detector function setting

Turn on E1 error testing function

Turn off E1 error testing function

5 AN Ethernet electrical interface auto-negotiation setting

Disable Ethernet self-adaptation

Enable Ethernet self-adaptation

6 SPD Ethernet electrical interface rate setting



7 DPX Ethernet electrical interface duplex setting

Force Ethernet to work under half-duplex mode when self-adaptation is disabled

Force Ethernet to work under full-duplex mode when self-adaptation is disabled

SW3

8 TMD E1 clock mode setting

Slave clock Master clock

On the motherboard of RC954 series devices, a SW4 dip switch is available to start up E1 links. (can be adjusted to user need)

21

Definition Switch serial number

Switch digit serial number

ON OFF

1 Do not start up the first E1

Start up the first E1

2 Do not start up the second E1

Start up the second E1

3 Do not start up the third E1

Start up the third E1

4 Do not start up the fourth E1

Start up the fourth E1

SW4

RC954-2FE8E1-BL has 8 SW4 dip switch digits; they correspond to the startup of the fifth, sixth, seventh and eighth E1.

For devices with Ethernet optical interface, a SW1 dip switch is available on the motherboard to inform the optical interface type to the software. (Please keep SW1 factory setting. User modification is not recommended.)

Switch digit serial number Switch serial number

1 2 3 4

Optical emitter type

SW1 ON ON ON ON M

ON ON ON OFF S1

ON ON OFF ON S2

ON ON OFF OFF S3

ON OFF ON ON SS13

ON OFF ON OFF SS15

ON OFF OFF ON SS23

ON OFF OFF OFF SS25

OFF x x x Reserved

On the motherboard of RC954-2FE8E1-Bl, there is a special function dip switch SW1 (Other RC954 series devices do not have this dip switch). Its function is shown is the following table:

22

Switch digit Definition Switch serial number Serial

number Title Function ON OFF

1 UPD Program renewal setting

On-line upgrade mode

Normal working mode

SW1

2 ALS Optical interface ALS (Automatic Laser Shutdown) enabling setting

Enable optical interface ALS function

Disabler optical interface ALS function

On the face of RC954-FE/FX4E1 sub card, a 4 digit dip switch is available for every E1 to select from balanced mode and unbalanced mode. (SW1 corresponds to the first E1; SW2 corresponds to the second E1; SW3 correspond to the third E1; SW4 correspond to the fourth E1)

Switch digit serial number Switch serial number

1 2 3 4

Optical emitter type

ON ON ON OFF Unbalanced

OFF OFF OFF ON Balanced

SW1/2/3/4

Others Forbidden

23

Chapter 4 Application mode

As is shown in the figure above, place a RC953-FE4E1 at the access node of user branch, place a RC954-FE4E1 at user center, and transmit service from each branch access node to user center, a service channel with capability of 2M~8M will be established between user center and each branch access node.

As is shown in the figure above, place RC5/6 series media converter at the access node of user branch, place RC954-FX4E1 at

user access node in the carrier’s computer room, place RC954-FX4E1 at user centre, and transmit services from each branch

access node to user center, a service channel with capability of 2M~8M will be established between user center and each branch

access node.

24

Chapter 5 Installation and Testing

5.1 Cautions

Firstly, please check the model and the number of the device and spare parts according to the packing list. Please be sure that the appearance of the device is intact. If there is any evidence that the device has been affected by damp, please dry it before installation.

To insure that the device can operate properly, please install and setup the device follow the steps listed below:

Read this manual with caution. Fix and install the device Connect Ethernet cable, fiber and E1 cable. Electrify and configure the device. Please refer to network management user manual for steps for

configuration. Operate properly

5.2 Installation process

5.2.1 Setup dip switch Setup dip switch according to user need and the definition of dip switch in chapter 3. Plug the device into RC002 chassis.

Note: The setting of Master/Slave management mode and E1 channel startup will be obedient to the status of the corresponding dip switch when the device is being electrified. Any operation to these two dip switches is invalid afterward. Other dip switches are valid for operating after electrifying.

5.2.2 Connect service Ethernet interface For device with Ethernet electrical interface, connect one end of the Ethernet cable to the Ethernet interface of this device, and connect the other end of the Ethernet cable to router or Ethernet switch.

For device with Ethernet optical interface, connect one end of the fiber to the Ethernet optical interface, and connect the other end of the fiber to router or Ethernet switch.

5.2.3 Connect E1 cable For device with unbalanced E1 interface, use the DB37 connector on E1 cable to connect to E1 interface on local device, and use BNC connector to connect to transmission devices or congener devices.

For device with balanced E1 interface, apply cable with two RJ-45 connectors and two E1 link to connect.

5.2.4 Electrify After turn on the power, the PWR indicator should be on. At the same time, please check the Ethernet interface indicator and E1 interface indicator, they should be working in order. (For the meanings of the indicators, please refer to the indicator definition in chapter 3)

5.2.5 Configure services If RC954 is used as master management device, user PC can be connected to the management module in RC002 chassis to manage RC954 and remote devices. For detailed configuration operation, please refer to

25

relevant command line notebook and network management manual.

5.3 Cable preparation

Table 7-1 Connecting cable specification for RC954 device interface

Interface Cable specification

10/100Mbps Ethernet electrical interface One

Only for devices with Ethernet electrical interface

100Base-T CAT-5 UTP

(User self-prepare)

Fiber with SC connector Two

Only for devices with Ethernet optical interface

Single/Multiple mode, correspond to devices

(User self-prepare)

DB37 – BNC Cable (75Ω unbalanced) One

Only for unbalanced E1 interface

(Additional item)

DB37 – RJ45 Cable (120Ω balanced) One

Only for balanced E1 interface

(Additional item)

RJ-45 E1 Cable Two or Four

Only for RC954-XXXX-BL series devices

(User self-prepare)

26

Chapter 6 Troubleshooting

For some problems you may meet during installation and operation, please try to solve them following the suggestions below. For the problems can not be solved using the following suggestions, please contact with distributors for technical support.

PWR indicator wouldn’t turn on after power supply has been connected. Firstly, please check whether the device has been plugged in properly. Then, please make sure that power supply of the chassis is working properly.

LOS alarm occurs at E1 interface LOS alarm indicates lost of receiving signals

Firstly, please check whether the E1 cable has been connected properly. If alarm occurs when the E1 cable has been connected correctly, please replace the cable and check

whether the device on the other side is operating properly.

Ethernet interface LINK indicator wouldn’t turn on Firstly, please check whether the cable is broken down. Secondly, please check whether the network device connected to the Ethernet interface is working properly. Please make sure that the cable is correctly made.

27

Appendix A DB37 Connector – E1 Cable Pin Definition

E1 interface for RC954 devices applies DB37 connector. DB37 female connector is provided in standard accessory list. Users can make cable by complying with the following pin definition.

Pin Definition Pin Definition 1

2 20

3 OUT1- 21 IN1+

4 OUT1+ 22 IN1-

5 23

6 24

7 OUT2- 25 IN2+

8 OUT2+ 26 IN2-

9 27

10 28

11 OUT3- 29 IN3+

12 OUT3+ 30 IN3-

13 31

14 32

15 OUT4- 33 IN4+

16 OUT4+ 34 IN4-

17 35

18 36

19 37

Note: For unbalanced cable, “+” for signal, “-” for shielded layer

28

Appendix B RJ45 Connector – E1 Cable Pin Definition

Using E1 balanced data cable

For E1 120Ω balanced interface, pin definition is shown in the table below:

RJ-45 线序 definition with A, B channel identifier

Pin 1 2 3 4 5 6 7 8

Data ATD+ ATD- BRD+ ARD+ ARD- BRD- BTD+ BTD-

Definition Channel AOutput +

Channel AOutput -

Channel BInput +

Channel AInput +

Channel AInput -

Channel BInput -

Channel BOutput +

Channel BOutput -

Using 120Ω balanced interface to connect to other device, please be clear of the pin definition of the device. For twisted pair, the connecting rule of pins on the two ends is shown in the figure below:

Please note that when connecting twisted pairs, please connect the two from TD+ and TD- that are twisted together. The same rule applies to RD+ and RD-.

Pin 1 Pin 8

29

Appendix C Specialized Vocabulary and Acronyms

EoPDH Ethernet over PDH：Bear Ethernet data services over PDH.

Mainly indicates bearing Ethernet service over E1 in this document.

PDH Pseudo-synchronous Digital Hierarchy

FAS Frame Alignment Signaling

LOS Loss of Signal

LOF Loss of Frame

AIS Alarm Indication Signal

CRC Cyclic Redundancy Check

LAL Local Alarm: Mainly indicates reverse alarms received on E1 excluding LOS alarm in this

document. Include AIS, LOF, and CRC alarm.

RAL Remote Alarm: Mainly indicates LOS, AIS, LOF, and CRC alarms from remote devices in this

manual.

SD Signal Detect: Indicates whether light has been detected by the receiving part of optical module or

not in this manual.

GID Group Identification: E1 belonged to one inverse multiplexer group should share one ID.

Different group uses different ID.

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RC954 SERIES USER MANUAL