rcms2903-4e1-4ge (rev a) user manual 201111
TRANSCRIPT
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RCMS2903-4E1-4GE (REV.A) User Manual
Legal Notices
Raisecom Technology Co., Ltd makes no warranty of any kind with regard to this manual,
including, but not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Raisecom Technology Co., Ltd shall not be held liable for errors contained herein or direct,
indirect, special, incidental or consequential damages in connection with the furnishing, performance,
or use of this material.
Warranty.
A copy of the specific warranty terms applicable to your Raisecom product and replacement parts
can be obtained from Service Office.
Restricted Rights Legend.
All rights are reserved. No part of this document may be photocopied, reproduced, or translated to
another language without the prior written consent of Raisecom Technology Co., Ltd. The
information contained in this document is subject to change without notice.
Copyright Notices.
Copyright ©2012 Raisecom. All rights reserved.
No part of this publication may be excerpted, reproduced, translated or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in
Writing from Raisecom Technology Co., Ltd.
Trademark Notices
is the trademark of Raisecom Technology Co., Ltd.
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Windows NT® is a U.S. registered trademark of Microsoft Corporation.
Windows® 2000 is a U.S. registered trademark of Microsoft Corporation.
Windows® XP is a U.S. registered trademark of Microsoft Corporation.
Windows® and MS Windows® are U.S. registered trademarks of
Microsoft Corporation.
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:
Address: Building 2, No. 28 of the Shangdi 6th Street, Haidian District, Beijing 100085
Tel: +86-10-82883305
Fax: +86-10-82883056
World Wide Web
You can access the most current Raisecom product information on the World Wide Web at the
following URL:
http://www.raisecom.com
Feedback
Comments and questions about how the RCMS2903-4E1-4GE device works are welcomed. Please
review the FAQ in the related manual, and if your question is not covered, send email by using the
following web page:
http://www.raisecom.com/en/contact-us.html.
If you have comments on the RCMS2903-4E1-4GE specification, instead of the web page above,
please send comments to:
We hope to hear from you!
CONTENTS Chapter 1 Product Overview -------------------------------------------------------------------------- 1
1.1 Introduction ----------------------------------------------------------------------------------------------------------------- 1 1.2 Features --------------------------------------------------------------------------------------------------------------------- 1 1.3 Ording information -------------------------------------------------------------------------------------------------------- 1
Chapter 2 Technical Specifications ----------------------------------------------------------------- 2 2.1 E1 interface ----------------------------------------------------------------------------------------------------------------- 2 2.2 Ethernet interface --------------------------------------------------------------------------------------------------------- 2 2.3 Optical interface ----------------------------------------------------------------------------------------------------------- 2 2.4 Power conditions ---------------------------------------------------------------------------------------------------------- 2 2.5 Working conditions -------------------------------------------------------------------------------------------------------- 3 2.6 Storage conditions -------------------------------------------------------------------------------------------------------- 3 2.7 Overall structure ----------------------------------------------------------------------------------------------------------- 3
Chapter 3 Device Appearance and Description ------------------------------------------------- 4 3.1 Device Front Panel-------------------------------------------------------------------------------------------------------- 4 3.2 Device Rear Panel -------------------------------------------------------------------------------------------------------- 4 3.3 Indicator definitions ------------------------------------------------------------------------------------------------------- 4 3.4 Interface description ------------------------------------------------------------------------------------------------------ 5
Chapter 4 Device Settings ------------------------------------------------------------------------------ 6 4.1 Switch setting --------------------------------------------------------------------------------------------------------------- 6
4.1.1 DIP switch position---------------------------------------------------------------------------------------------------------------------- 6 4.1.2 Description of switch ------------------------------------------------------------------------------------------------------------------- 6 4.1.3 Default setting ---------------------------------------------------------------------------------------------------------------------------- 8
Chapter 5 Basic Connection and Typical Application ---------------------------------------- 9 5.1 Basic connection ---------------------------------------------------------------------------------------------------------- 9
5.1.1 Connect optical interface -------------------------------------------------------------------------------------------------------------- 9 5.1.2 Connect E1 interface ------------------------------------------------------------------------------------------------------------------- 9 5.1.3 Connet Ethernet interface ------------------------------------------------------------------------------------------------------------- 9 5.1.4 Connect console NM interface ------------------------------------------------------------------------------------------------------- 9 5.1.5 Connection power supply ------------------------------------------------------------------------------------------------------------- 9
5.2 Typical application ------------------------------------------------------------------------------------------------------ 10
Chapter 6 Network Management Features ------------------------------------------------------ 11 6.1 NMS platform ------------------------------------------------------------------------------------------------------------- 11 6.2 NMS query ---------------------------------------------------------------------------------------------------------------- 11 6.3 NMS configuration ------------------------------------------------------------------------------------------------------ 11
Chapter 7 Device Installation Preparation and Connection ------------------------------ 12 7.1 Pre-installation checking and preparing --------------------------------------------------------------------------- 12
7.1.1 Make sure that the E1 lines applied matches connectivity equipment models ---------------------------------------- 12 7.1.2 Make sure that the fiber medium matches the SFP module of the device --------------------------------------------- 12 7.1.3 Confirm the fiber cable type applied ---------------------------------------------------------------------------------------------- 12
7.2 Installation procedures ------------------------------------------------------------------------------------------------- 12 7.2.1 Device installation --------------------------------------------------------------------------------------------------------------------- 12 7.2.2 Cable connection ---------------------------------------------------------------------------------------------------------------------- 12 7.2.3 Device electrifying -------------------------------------------------------------------------------------------------------------------- 13
Appendix A FAQ --------------------------------------------------------------------------------------------- 14
General Safety Instructions
The following instructions serve as a general guide for the safe installation and operation of
telecommunications products. Additional instructions, if applicable, are included inside the manual.
Safety Symbols
This symbol may appear on the equipment or in the text. It indicates potential safety
hazards regarding product operation or maintenance to operator or service personnel.
Danger of electric shock! Avoid any contact with the marked surface while the
product is energized or connected to outdoor telecommunication lines.
Protective earth: the marked lug or terminal should be connected to the building
protective earth bus.
Some products have terminals which are permanently protective earthing conductors.
Please be sure well connected to earthing before equipment connected to supply.
Some products may be equipped with a laser diode. In such cases, a label with the
laser class and other warnings as applicable will be attached near the optical
transmitter. The laser warning symbol may be also attached.
Please observe the following precautions:
• Before turning on the chassis with optic module, make sure that the fiber optic
cable is intact and is connected to the transmitter.
• Do not attempt to adjust the laser drive current.
• Do not use broken or unterminated fiber-optic cables/connectors or look straight at the laser beam.
• The use of optical devices with the equipment will increase eye hazard.
• Use of controls, adjustments or performing procedures other than those specified herein, may
result in hazardous radiation exposure.
ATTENTION: The laser beam may be invisible!
Always observe standard safety precautions during installation, operation and maintenance of this
product. Only qualified and authorized service personnel should carry out adjustment, maintenance
or repairs to this product. No installation, adjustment, maintenance or repairs should be performed by
either the operator or the user.
Some products have more than one power supply cord. Disconnect 2 power supply cords before
servicing to avoid electric shock.
Before operating modules in the electricity conditions, please be noticed that optical modules shall
be connected with optical fiber wires or shield with optical module cover for fear that laser light
harms to operator’s eyes.
It is suggested to apply optical module CLASS1 as laser.
Handling Energized Products
General Safety Practices Do not touch or tamper with the power supply when the power cord is connected. Line voltages may
be present inside certain products even when the power switch (if installed) is in the OFF position or
a fuse is blown. For DC-powered products, although the voltages levels are usually not hazardous,
energy hazards may still exist.
Before working on equipment connected to power lines or telecommunication lines, remove jewelry
or any other metallic object that may come into contact with energized parts.
Unless otherwise specified, all products are intended to be grounded during normal use. Grounding
is provided by connecting the mains plug to a wall socket with a protective earth terminal. If an earth
lug is provided on the product, it should be connected to the protective earth at all times, by a wire
with a diameter of 18 AWG or wider. Rack-mounted equipment should be mounted only in earthed
racks and cabinets.
Always make the ground connection first and disconnect it last. Do not connect telecommunication
cables to ungrounded equipment. Make sure that all other cables are disconnected before
disconnecting the ground.
Connection of AC Mains Make sure that the electrical installation complies with local codes.
Always connect the AC plug to a wall socket with a protective ground.
Always connect the power cord first to the equipment and then to the wall socket. If a power switch
is provided in the equipment, set it to the OFF position. If the power cord cannot be readily
disconnected in case of emergency, make sure that a readily accessible circuit breaker or emergency
switch is installed in the building installation.
Connection of DC Mains Unless otherwise specified in the manual, the DC input to the equipment is floating in reference to
the ground. Any single pole can be externally grounded.
Due to the high current capability of DC mains systems, care should be taken when connecting the
DC supply to avoid short-circuits and fire hazards.
DC units should be installed in a restricted access area, i.e. an area where access is authorized only to
qualified service and maintenance personnel.
Make sure that the DC supply is electrically isolated from any AC source and that the installation
complies with the local codes.
Before connecting the DC supply wires, ensure that power is removed from the DC circuit. Locate
the circuit breaker of the panel board that services the equipment and switch it to the OFF position.
When connecting the DC supply wires, first connect the ground wire to the corresponding terminal,
then the positive pole and last the negative pole. Switch the circuit breaker back to the ON position.
A readily accessible disconnect device that is suitably rated and approved should be incorporated in
the building installation.
Preventing Electrostatic Discharge Damage
Modules which can be plugged into chassis are sensitive to damage from static electricity.
Conversely, static voltages as high as 35,000V can be generated just by handling plastic or foam
packing material, or by sliding assemblies across plastic and carpets. Not exercising the proper
electrostatic discharge (ESD) precautions can result in intermittent or complete component failures.
To minimize the potential for ESD damage, observe the following guidelines:
• Always use an ESD-preventive antistatic wrist strap or ankle strap and ensure that it makes good
skin contact.
• When removing or installing a component, make sure the equipment end of your antistatic strap
leash is connected to the ESD connection sockets on the front of the chassis or to a bare metal
surface on the chassis. Avoid contact between the component and your clothing. The wrist strap only
protects the component from ESD voltages on the body; ESD voltages on your clothing can still
cause component damage.
• Always place a card component-side-up on an antistatic surface, in an antistatic card rack, or in a
static shielding bag. If you are returning the item to the factory, immediately place it in a static
shielding bag.
• Handle Modules by the metal card carrier edges only; Avoid touching the board or any connector
pins.
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Chapter 1 Product Overview
1.1 Introduction
RCMS2903-4E1-4GE Ethernet multiplexer is a kind of RCMS29 series product. The product is a
desktop device, and provides four E1 and four gigabit Ethernet interfaces for users, where four
gigabit Ethernet interfaces share a gigabit Ethernet.
1.2 Features
Adopt chips developed and operated by Raisecom, designed in 6-layer circuit board, with
high reliability;
Provide four GE ports and four E1 interfaces, and each E1 is transferred in 2048Kbps
transparent mode;
Adequate alarming and indicator function shows alarm information of local and remote
device and operating condition of each E1 circuit branch at the same time;
Use l Dying Gasp Function to realize power off alarm of remote device;
Provide a fiber interface and data capacity of fiber is GE+4 E1 multiplexing;
Provide four GE interfaces to realize 10/100/1000Mbps auto-negotiation Ethernet interface
and share 1000Mbps bandwidth;
Ethernet interface supports 802.1q VLAN, QoS, QinQ, rate limit on port, rate limit based on
vlan, statistics on port and so on;
Support ethernet interface speed and duplex mode selection;
Ethernet maximum transmission unit up to 9720 bytes
As for flow control, support full-duplex IEEE802.3x and half-duplex back pressure;
Ethernet supports Auto-MDI/MDIX function;
Support ALS functions, can effectively control the optical signal outputting in disconnection
status;
E1 channel loopback test function at local or remote to realize link detection and start or
maintenance of devics;
Provide network management function to local and remote devices;
Support software upgrade online.
1.3 Ording information
Type of device Description
RCMS2903-4E1-4GE-AC 1U 19inches desktop multiplexer device which can realize hybrid multiplexing
of four E1 and four 1000Mbps ethernet data in fiber circuit. It provides a
gigabit SFP optical interface and uses 220V AC Supply Power interface.
RCMS2903-4E1-4GE-DC 1U 19inches desktop multiplexer device which can realize hybrid multiplexing
of four E1 and four 1000Mbps ethernet data in fiber circuit. It provides a
gigabit SFP optical interface and uses -48V DC Supply Power interface.
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Chapter 2 Technical Specifications
2.1 E1 interface
Interface Rate: 2048Kbps ± 50ppm;
Interface Pattern: HDB3;
Interface Type: BNC/RJ45;
Interface Impedance: 70 Ω/120 Ω;
Input Jitter Tolerance: Conforms to ITU-T G.823 recommendation
Electrical Characteristics: Conforms to ITU-T G.703 recommendation
Transfer Characteristics: Conforms to ITU-T G.823 recommendation
2.2 Ethernet interface
Standard Compliance: IEEE 802.3, IEEE 802.3u and IEEE 802.3ab;
Transfer Rate: 10M/100M/1000Mbps auto-negotiation;
Duplex Mode: auto-negotiate;
Frame Size: 9720 bytes;
Flow Control: enable flow control function;
MDI/MDIX: automatic crossing lines identification, and straight-through cable and crossing
lines can connect with switch or network card at random;
Other features: support 802.1q VLAN, QoS, QinQ, rate limit on port, VLAN rate limit,
statistics on port and so on.
2.3 Optical interface
Interface Coding: NRZ;
Transmission Rate: 1.25Gbps;
Interface Type: SFP interface;
Optical Transmission Specification: different SFP modules are corresponding to different
optical interface specification.
2.4 Power conditions
AC power supply
Operating Volage: 110 V or 220V;
Tolerance Range: 90~264V;
Freqency: 50HZ;
DC power supply
Operating Volage: -48V;
Tolerance Range: -36~-72V;
Consumption: <7 W;
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2.5 Working conditions
Operating Temperature: -5 ~ 60℃;
Operating Humidity: 10 ~90% (25℃);
2.6 Storage conditions
Storage Temperature: -25 ~ 60℃;
Storage Humidity: 5% ~ 90% non-condensing;
2.7 Overall structure
Physical appearance: 19inches 1U chassis;
Dimension: 440mm (W) × 43.6mm (high) × 220mm (D)
Net Weight: 2.68Kg
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Chapter 3 Device Appearance and Description
3.1 Device Front Panel
PWR
SYS
LPR
PAT
LOOP
LOS E-3
LOF E-6
OPT E1-LOS
1 3
2 4SW1 SW2
OPT GE CONSOLE
RCMS2903-4E1-4GE
LNK/ACT 1000M
Figure 3-1 Device Front Panel
3.2 Device Rear Panel
ON
OFFTX RX1
E1
TX RX2
E1
TX RX3
E1
TX RX4
E1
Figure 3-2 Device Rear Panel
3.3 Indicator definitions
Device indication:
PWR (green): power supply indicator. ON: power supply is working in normal condition.
SYS (green): system indicator. Flashing: CPU is working in normal condition. Otherwise, it is
working in abnormal condition.
LPR (red): remote loss power alarm indicator. ON: remote system is in power off status after that
local and remote device is working in normal condition.
Test indication
PAT (yellow): error code test indicator. ON: enable error code test function, line is normal and no
error code; flashing: enable error code test function and there are error codes on lines; OFF: disable
error code test function.
LOOP (green): E1 interface loopback state indicator. ON: there is loopback in a or some local E1;
OFF: there is no loopback in local location.
Optical line indicator
LOS (red): loss alarm indicator of optical interface RX. ON: Local optical interface RX loss;
Flashing: Local optical interface RX is normal and remote optical interface RX loss; OFF: local and
remote optical interface can receive signals, or there is no SFP module in local location.
LOF (red): Out Of Frame (OOF) alarm indicator of optical interface RX. ON: Local optical interface
RX OOF; Flashing: Local optical interface RX frame is normal and remote optical interface RX
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OOF; OFF: local and remote optical interface can receive signal frames normally.
E-3 (red): optical interface E-3 alarm indicator. ON: Bit Error Rate (BER) of RX signal on local
optical interface exceeds 1E-3; flashing: Bit Error Rate (BER) of RX signal on remote optical
interface exceeds 1E-3.
E-6 (yellow): optical interface E-6 alarm indicator. ON: Bit Error Rate (BER) of RX signal on local
optical interface exceeds 1E-6; flashing: Bit Error Rate (BER) of RX signal on remote optical
interface exceeds 1E-6.
E1 line indication
LOS1~4 (red): the 1~4 E signal loss alarm indicator. ON: local E1 has LOS alar,; flashing: local E1
receives signals normally and remote E1 has LOS alarm; OFF: there is no LOS alarm in local or
remote E1.
Ethernet indication
LNK/ACT (green): network interface connection indicator. ON: network link is connected properly;
Flashing: there is data transmitting and receiving and network link is normal; OFF: network link is
abnormal.
1000M (yellow): network interface rate indicator. ON: 1000Mbps; OFF: 100Mbps or 10Mbps.
3.4 Interface description
Optical interface
It is located in front panel and supports SFP module with rate of 1.25G.
Four ethernet interfaces
It is located in four RJ45 interfaces of front panel for 1~4 ethernet.
Four E1 interfaces
It is located in four E1 interfaces of rear panel, and each E1 provides two BNC coaxial interfaces
(75Ω nonbalanced), a RJ45 interface (120Ω balanced). Defination of RJ45 as below: core 1,2 output;
core 4, 5 input.
Note: order of lines on interface must be correct, so please read description of order of lines carefully
before making balanced cable.
CONSOLE interface
It is located in single RJ45 interface of front interface and connets with a serial port of a computer by
CBL-RS232-DB9F/RJ45 cable with RS232 voltage specification and 9600bps baud rate.
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Chapter 4 Device Settings
4.1 Switch setting
4.1.1 DIP switch position
There are two four-bit DIP switch SW1 and SW2 in front panel.
4.1.2 Description of switch
SW1
Bit 1: ALS setting switch
Bit 1 ALS setting switch
OFF Disable ALS.
ON Enable ALS.
Bit 2: unused E1 brach alarm shielding
It is used to shield pseudo alarm of E1 branch. Pseudo alarm means that LOS alarm indicator of
unused brach is ON if there is no signal loss alarm in connected E1 line, but there is unused E1
braches. Users can set switch of bit 2 as ON state to shield pseudo alarm. And then alarm indicator
will be ON if there is a LOS alarm in connected E1 braches.
Bit 2 Unused E1 brach alarm shielding
OFF Not shield
ON shield
Bit 3: fault-pass setting switch
It is used to control transfer from optical interface fault to Ethernet network interface and transfer
from fault on Ethernet network interface of remote end to local Ethernet network interface.
Electric-to-optical fault-pass: disable Ethernet electrical interface until bidirection of optical interface
return to normal if there are LOS, LOF on local or remote optical interface.
Optical-to-electrical fault-pass: disable local Ethernet electrical interface until a remote Ethernet
interface returns to link up at lease if remote Ethernet interfaces change from link up to link down.
Disable/enable electric-to-optical fault-pass and optical-to-electrical fault-pass at the same time by
users.
Bit 3 Fault-pass setting switch
OFF Disable
ON Enable
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Bit 4: local/remote selected switch
Bit 4 Local/remote selected switch
OFF Remote
ON Local
SW2
Bit 1: BERT (Bit Error Rate Tester) swith
Bit 1 BERT swith
OFF Disable BERT.
ON Enable BERT.
(users just test bit error of the first E1, and
others need to be configured by NM)
Bit 2: E1 interface impedance setting switch
Bit 2 E1 interface impedance setting switch
OFF 75Ω unbalanced interface.
ON 120Ω balanced interface.
Bit 3: all E1 loopback enabling switch
Bit 3 All E1 loopback enabling switch
OFF All E1 don’t loop back.
ON All E1 loop back.
Bit 4: loopback type selection
Loopback type selection switch uses bit 3 to do E1 loopback test and choose loopback operation
from “remote E1 inner ring” and “local E1 bi-direction loopback”. As shown in below figure, users
can see loopback location of remote inner ring and local bi-direction loopback.
Bit 4 Loopback type selection
OFF Remote inner ring enables.
ON Local bi-direction loopback enables.
Figure 4-1 Remote inner ring
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Figure 4-2 Local bi-direction loopback
Note: when set loopback in local optical transceiver, all loop enabling switches are defaulted to OFF
at peer-end devices.
4.1.3 Default setting
All DIP Switches all OFF by default.
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Chapter 5 Basic Connection and Typical Application
5.1 Basic connection
5.1.1 Connect optical interface
Users should install SFP module in devces and insert fiber fanout into interface of SFP module.
If the connection is correct, when receiving optical signal, LOS, LOF, E-3, E-6 alarm indicator of
front panel will be OFF after power on.
5.1.2 Connect E1 interface
E1 interface is BNCF which can connect with E1 directly by CBL-E1-BNCM／BNCM cable.
5.1.3 Connet Ethernet interface
Ethernet cables of RJ45 connector are used to connect the device with related network devices.
5.1.4 Connect console NM interface
RJ connector of CBL-RS232-DB9F/RJ45 cable connects CONSOLE interface of the device and
DB9 connector connects serial port of PC when connecting NM of PC.
5.1.5 Connection power supply
Users can put 220V AC power supply line which is provided in enclosure into 220V standard three
phase power socket, or connect -48V DC power supply line to DC power supply. (BGND terminal
pillars connects power ground, chassis -48V terminal pillars connects -48V power supply and PGND
connects protection ground).
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5.2 Typical application
Figure 5-1 basic connection
Local end is card 240GE×4L in OPCOM3500E in the application, single card can connect
four remote devices, the remote device is RC2903-4E1-4GE, local and remote devices
connect with each other by fibers, capacity is gigabit+4E1 and remote device provides four
gigabit interfaces and four E1.
Four GE of remote device share a gigabit bandwidth and have rate limit, supporting VLAN
dividing and QinQ which provide gigabit+E1 service for foue users.
Ethernet service on local connects switch devices directly and access to ethernet data network.
E1 services converge SDH network to transmit 64K voice service.
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Chapter 6 Network Management Features
6.1 NMS platform
Through RAISECOM NMS platform can view RCMS2903-4E1-4GE information, and carry on the
control and configuration. Users can also query and configure states of local RCMS2903-4E1-4GE
by CONSOLE port.
6.2 NMS query
Local equipment version, optical module type;
Local and remote alarm;
Local and remote device type;
LOS, AIS as well as CV alarm on local and remote E1 equipment;
Local and remote E1 interface impedance status;
Local and remote E1 loopback state;
Local and remote BERT results;
Local and remote Ethernet port state;
ALS function;
6.3 NMS configuration
Local and remote E1 loopback settings;
BERT;
Local and remote Ethernet port settings;
ALS function;
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Chapter 7 Device Installation Preparation and Connection
7.1 Pre-installation checking and preparing
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. Please read this
manual with caution before installing the device;
Please have all types of cables that are needed ready and make sure there are no short circuits
and open circuits;
Please make sure that the power supply of the chassis works in the operating voltage range;
Please have the rack of the chassis device well earthed;
Please prepare bit error rate tester, optical power meter for line quality testing;
Place it on a safe and stable place, please be cautious of the environment requirement of the
device.
7.1.1 Make sure that the E1 lines applied matches connectivity equipment models
E1 unbalanced interfaces use SYV 75-5, SYV 75-3, SYV 75-2-2 coaxial cable.
E1 balanced interface cables use 22AWG or 24AWG teisted-pair.
If E1 interfaces use 120Ω balanced interface, then the type of E1 interface, definition and interface
impedance of the equipment, please check your user manual for these devices.
7.1.2 Make sure that the fiber medium matches the SFP module of the device
7.1.3 Confirm the fiber cable type applied
The cable type for the interface of multi-mode fiber:
62.5/125um multi-mode fiber or 50/125um multi-mode fiber
The cable type for the interface of single-mode fiber:
9/125um single-mode fiber
7.2 Installation procedures
7.2.1 Device installation
The device is installed on a framw foundation and tighten up screws.
7.2.2 Cable connection
E1 interface cables connect SFP module and tail cable of fiber interface.
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7.2.3 Device electrifying
The module is installed and fixed to electrifying device. Power indicator PWR is always on, that is
the module works normally, and the device works normally if SYS indicator is flashing.
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Appendix A FAQ
LOS indicator always red ON
Local optical interface receives alarm. Check whether input end of RX is connected properly.
By optical power meter, detected Rx optical power should larger than Rx sensitivity and
avoid the critical value.
LOS indicator is red Flickering Local optical interface receives alarm. Check whether input end of RX is connected properly.
By optical power meter, detected Rx optical power should larger than Rx sensitivity and
avoid the critical value.
LOF indicator is red ON
There is OOF of received dignals on local optical interface. The device has received optical
signals, bur optical power may be the critical value. So users should detect received optical
power and confirm whether connection of remote TX is correct.
E-3 is red ON There is 1E-3 error code in received signals. Users can detect whether connection on optical
interface and received optical power.
E-6 is yellow ON There is 1E-6 error code in received signals. It’s normal if there is E-6 alarm when device is
just starting, E-6 will be OFF after a few seconds. Users can detect whether connection on
optical interface and received optical power if there is E-6 alarm in running process.
E1 indicator LOS is ON This alarm indicates loss of signal at E1 tributary, without any signal input. Please check
whether E1 interfaces connect well and order of cables is correct.
The Ethernet interface LINK indicator wouldn’t turns ON. : First of all, check whether the network line opens. Second, check operation of network
equipment connected to the Ethernet interface is normal. Confirm the use of the pin
arrangement is correct.
Address: Building 2, No. 28 of the Shangdi 6th Street, Haidian District, Beijing Postcode:
100085 Tel: +86-10-82883305 Fax: +86-10-82883056 Email: [email protected]
http://www.raisecom.com