Raisecom RCMS2201-30, RCMS2201-30-M, RCMS2201-30-S, RCMS2201-30-S1, RCMS2201-30-S2 User Manual

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RCMS2201-30

Modular Ethernet Multiplexer

User Manual

(Rev. A)

Raisecom Technology Co., Ltd

(04/2005)

Raisecom Technology Co., Ltd

1. Cautions

Please read the following notices carefully before installing and

using the device, Raisecom does not respond to any loss that

caused by violating safety notice.

RCMS2201-30 is integrated device that has precise elements,

please avoid violent shakes and impacts, and do not

disassemble or maintain the device yourself. If it is required,

please do it under the guide of our technical staff following in

the steps of anti static. Please contact us if there is any need.

There must be grounding protection for the sake of safety; do

not disassemble the device yourself, we regard it as you waiver

your rights of repair guarantee.

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Contents

1. Cautions ...........................................................................................................................................1

2. Overview ..........................................................................................................................................3

2.1. Introduction ..............................................................................................................................3

2.2. Main Features ..........................................................................................................................3

2.3. Part Number Explanation .........................................................................................................3

3. Parameters.......................................................................................................................................5

3.1. E1 Interface Specification ........................................................................................................5

3.2. Fast Ethernet Interface Specification .......................................................................................5

3.3. Optical Interface Specification..................................................................................................5

3.4. Ambience .................................................................................................................................5

4. How to use .......................................................................................................................................6

4.1. Description of the Front Panel..................................................................................................6

4.2. Dip-switch Setup ......................................................................................................................7

4.2.1. SW1 for Working Modes ..................................................................................................7

4.2.2. Fault-Pass-Through Capability Explanation.....................................................................7

4.2.3. E1 Remote Loop-back Test .............................................................................................8

4.2.4. How to Implement Remote Network Management...........................................................8

5. Installation and Test .......................................................................................................................10

5.1. Inspect after Opening.............................................................................................................10

5.2. Preparation before Installation ...............................................................................................10

5.3. Installation..............................................................................................................................10

5.3.1. Connecting the Cables...................................................................................................10

5.3.2. Function Configuration...................................................................................................10

6. Troubleshooting .............................................................................................................................12

7. Appendix A Cable Making ..............................................................................................................13

A.1 E1 Cable Making..........................................................................................................................13

A.2 Ethernet Cable Making ................................................................................................................13

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2. Overview

2.1. Introduction

RCMS2201-30 Ethernet Multiplexers are fiber-optic transmission devices for dedicated communication networks, data communication networks, switching networks, and also for point-to-point networks, medium-sized and small capacity networks. It can multiplex one E1 channel and one Fast Ethernet on to one fiber-optic cable, and implement the line-speed transmission of the Ethernet data. RCMS2201-30 is featured by high integration and complete network management functions. It can be installed into the Raisecom 3U-high 16-slot chassis, or desktop single-slot chassis, providing various network management functions.

RCMS2201-30 Ethernet Multiplexers include the following models.

Model Description

RCMS2201-30-M

Host-site/remote-site module, 10/100Mbps auto-sensing (RJ45), 120 Ohm balanced E1 (RJ45), multimode(DSC),

RCMS2201-30-S Host-site/remote-site module, 10/100Mbps auto-sensing (RJ45), 120 Ohm balanced E1 (RJ45), single mode(DSC),

2.2. Main Features

z Low power consumption due to extra large-scale ASIC chips; high reliability due to

4-layer PCB

z Providing 1 E1 channel interface, transparent transmission mode z Providing 1 10/100Mbps auto-sensing Ethernet interface z Providing 1 optical interface, multiplexing E1 and Ethernet data together z Alarm indications of local and remote equipment z Supporting E1 link remote loop-back function, easy fault location z Supporting speed limit on both transmitting and receiving directions of Ethernet

interface, increment 32kbps

z Implementation of SNMP, capable of local and remote management

2.3. Part Number Explanation

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Example RC MS 2 2 01 – 30 – S2

Single mode optical interface, 10-60 km 1 E1 channel 1 Ethernet interface Modular, dual-strand fiber-optic L2 Ethernet switching capability Multi-service Raisecom code (RC short for Raisecom)

Note: Equipments that can work in pairs

Host site Remote site

RCMS2201-30-M RCMS2201-30-M, or RCMS2101-30-FV35-M

RCMS2201-30-S1

RCMS2201-30-S1, or RCMS2101-30-FV35-S1

RCMS2201-30-S2

RCMS2201-30-S2 or, RCMS2101-30-FV35-S2

Dual-strand fiber-optic equipment

RCMS2201-30-S3

RCMS2201-30-S3 or, RCMS2101-30-FV35-S3

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3. Parameters

3.1. E1 Interface Specification

Bit rate: 2048Kbps±50ppm Line code: HDB3 Interface impedance: 120Ω balanced signal Electrical characteristic: Compliant to ITU-T G.703 Transfer characteristic: Compliant to ITU-T G.823 Jitter Tolerance: ITU-T G.724

3.2. Fast Ethernet Interface Specification

IEEE 802.3 IEEE 802.3u IEEE 802.1d Spanning Tree IEEE 802.1q VLAN Support oversized Ethernet data frame up to 1916 bytes Working mode: 10/100M Auto-Negotiation, Auto-MDI/MDIX (manual configurable) Flow control: IEEE802.3x and back pressure

3.3. Optical Interface Specification

Bit rate: 150Mbps Fiber connector: SC Transmission distance: Multimode dual-strand M=0 – 2 km

Single mode dual-strand S1=0-25 km, S2=10-60 km, S3=15-120 km

3.4. Ambience

Working temperature: 0 ~ 45℃ Relative humidity: ≤ 90% (25℃)

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4. How to use

4.1. Description of the Front Panel

The sketch of the RCMS2201-30 front panel

Optical Connector:

SC type in the above figure, TX for transmitting direction, and RX for receiving direction The optical interface type of RCMS2201-30 is DSC/PC.

LAL (Local Alarm):

The red alarm indicator will be lightened when error occurs at local optical receiving direction. It includes 4 alarm levels: lose of signal, lose of frame, BER exceeds 10-3, and BER exceeds 10-6. Users shall inquire the network management system for alarm details.

RAL (Remote Alarm):

The red alarm indicator will be lightened when error occurs at remote optical receiving (local transmitting) direction. It includes 4 alarm levels: lose of signal, lose of frame, BER exceeds 10-3, and BER exceeds 10-6.

ETH Ethernet Interface:

RJ45 socket, unshielded twisted pair

LNK/ACT (Link/Action):

The green indicator will be lightened when the link is in normal condition. It flashes

when transmitting to receiving data.

100M (100Mbps):

The green indicator will be lightened when working at the rate of 100Mbps.

E1 Interface:

RJ45 socket, 120 Ohm balanced signal, Pin 1, 2 for output, and Pin 5, 6 for input

L/R LOS (Local/Remote Lose Signal):

The red alarm indicator will be lightened when E1 input loss of frame occurs at the local

site; it flashes when E1 input loss of frame occurs at the remote site.

Power Supply Indicator:

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1 2 3 4 5 6 7 8

OFF

PWR (Power): the green indicator will be lightened when the power supply is in good condition

4.2. Dip-switch Setup

4.2.1. SW1 for Working Modes

SW1 is an 8-bit DIP-switch, as the figure on the right

Switch OFF (default status) ON

1 Enable Ethernet interface auto-sensing Disable Ethernet interface

auto-sensing

2 a) Ethernet forced 100M when

auto-sensing disabled b)Invalid when auto-sensing enabled

a) Ethernet forced 10M when auto-sensing disabled b) Invalid when auto-sensing enabled

3 a) Ethernet forced full duplex when

auto-negotiation disabled b) Ethernet forced full duplex when auto-negotiation failed; invalid when auto-negotiation success

a) Ethernet forced half duplex when auto-negotiation disabled b) Ethernet forced half duplex when auto-negotiation failed; invalid when

auto-negotiation success 4 Reserved Reserved 5 Fault Pass Through disabled Fault Pass Through enabled 6 Enable MDI/MDIX auto-negotiation Disable MDI/MDIX auto-negotiation.

Straight-through cable shall be used to

connect to Switch; crossover cable

shall be used to connect to NIC and

Routers 7 E1 link normal working mode E1 link remote loop-back 8 Auto recognition of network

management channel

Forced remote network management.

Please configure as per the network

topology.

Note: The other dip-switch SW2 is a 2-bit switch, which shall be used by manufacturing people. Users are not advised to change the default status.

4.2.2. Fault-Pass-Through Capability Explanation

When Fault-Pass-Through capability is enabled, there are 3 situations that we call it a link fault.

1． The equipment will monitor the status of remote Ethernet interface. When it

changes to link down from link up, we take it as a link fault of remote Ethernet. At

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the same time, the status of local module will change to link down form link up. It will not be recovered until the fault disappears at remote site.

2． The equipment will monitor the status of remote E1 interface. When it changes to

loss of signal status from normal, we take is as a link fault of remote E1 link. At the mean time, the equipment will cut off the transmission of local E1 interface but not send AIS signal. The local E1 interface will not recover until the fault disappears at remote site.

3． The equipment will monitor the status of optical link, either transmitting alarm or

receiving alarm will be taken as an optical link fault. At the mean time, the Ethernet interface status will change to link down and the E1 interface will be cut off. The Ethernet interface and E1 interface will not recover until the optical interface recovers.

The fault-pass-through capability is designed for users who have particular requirements. When it is disabled, any fault at remote site and at optical interface has nothing to do with local interfaces; all the interfaces of local module will be open. In order to avoid misunderstanding, users are advised to use it cautiously. The factory default status is disabled.

4.2.3. E1 Remote Loop-back Test

“E1 remote loop-back” setup at local Ethernet Multiplexer

Note: when setup any kinds of loop-back at the local Ethernet Multiplexer, the “remote

loop-back” switch at remote Ethernet Multiplexer must be at default status. When the module is at E1 remote loop-back status, the Ethernet data communication will not be interfered.

4.2.4. How to Implement Remote Network Management

When the equipment is connected as the following topology, the remote network management can be implemented.

Local site

Interface

Circuit

Interface

Circuit

Fiber-optic

E1 interface

Multiplex

Core

BERT

Multiplex

Core

Remote site

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A． The host-site module is installed in Raisecom’s dedicated 16-slot 3U-high chassis,

which also has the network management module installed. The remote-site module is installed in Raisecom’s single slot chassis.

B． The both modules are installed in 16-slot 3U-high chassis, but only the host-site

chassis is equipped with network management module. The remote-site module shall be set to “forced remote network management mode”. That is to say, the 8th switch shall be turned to ON.

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5. Installation and Test

5.1. Inspect after Opening

Please first check if the models and part numbers are in consistence, and also check if the equipments are damaged.

5.2. Preparation before Installation

z Carefully read this manual z Prepare all kinds of the cable. Ensure that they are not short-circuited. Refer to

Appendix A for cable making.

z Ensure the pressure of power supply is in the tolerance range, the chassis is well

connected with the ground.

z Prepare the BERT and optical power meter for test of line quality. z Place the equipment at stable and secure environment. Pay attention to the

requirements of the ambience.

5.3. Installation

This module can be installed into Raisecom’s dedicated 16-slot 3U-high chassis, 4-slot 1U-high chassis, and single slot chassis. Slowly insert the module into the slot to the end, and fasten the fixing screw tightly.

5.3.1. Connecting the Cables

z E1 Signal Interface 120 Ohm balanced signal. Connect with twisted-pair cable, Pin 1, 2 for output and Pin 5, 6 for input.

z Ethernet Interface Connect with Cat. 5 or hyper Cat. 5 twisted-pair cables. Either straight-through or crossover cable is OK.

z Optical Interface Plug the tail fiber into the fiber socket to the end.

5.3.2. Function Configuration

After connecting the cables and applying the power supply, there shall not be alarms at the

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optical interface. If users want to configure the dip-switches, first unplug the module from the chassis and then use a flat screw-driver to set switches.

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6. Troubleshooting

If there is any problem during installation and operation, please try the following solutions. If the problem still cannot be solved, please contact distributors for technical support. The following explanations and solutions to optical and E1 LOS alarms are for the local module. If the alarms are at the remote site, please solve them at remote site.

z Power (PWR) indicator (Green) is not ON

Answer: Power supply fails. Check whether the power supply is working properly

z LAL indicator (Red) at optical interface is ON

Answer: Loss of signal at the optical interface. Check whether the input of optical fiber is connected properly. Users can test the optical power using optical power meter. The optical power shall be larger than the receiving sensitivity.

z E1 sub-channel L/R LOS indicator (Red) is ON Answer: The local E1 sub-channel receiving signal is lost. If the indicator is flashing, it

means the remote E1 sub-channel receiving signal is lost. Please check if the E1 interface is well connected.

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7. Appendix A Cable Making

A.1 E1 Cable Making

Pin Number 1 2 3 4 5 6 7 8

Definition OUT+ OUT-

Not Used Not Used

IN+ IN-

Not Used Not Used

A.2 Ethernet Cable Making

Use Cat.5 twisted-pair cable with RJ45 connector to connect this equipment. Note that the cable shall not be longer than 100 meters.

The cable can be either straight-through or crossover. The sequence of the RJ45 connector is as follows.

Pin Number 1 2 3 4 5 6 7 8

MDI Definition TX+ TX- RX+

Not Used Not Used

RX-

Not Used Not Used

MDI-X Definition RX+ RX- TX+

Not Used Not Used

TX-

Not Used Not Used

Pin 1 Pin 8

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@2005 Raisecom Technology Co., Ltd.

All trademarks are the property of their respective owners.

Technical information may be subject to change without prior notification.

Raisecom RCMS2201-30, RCMS2201-30-M, RCMS2201-30-S, RCMS2201-30-S1, RCMS2201-30-S2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual