Raisecom RC831-60-FV35 Series User manual

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RC831-60-FV35 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 ©2007 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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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: 2nd Floor, South Building of Rainbow Plaza, No.11 Shangdi Information Road,
Haidian District, Beijing 100085
Tel: [phone]
Fax: [phone]
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 RC831-60-FV35(A) 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/xcontactus/contactus.htm.
If you have comments on the RC831-60-FV35 specification, instead of the web page above, please
send comments to:
[email protected]
We hope to hear from you!

CONTENTS
Release Notes------------------------------------------------------------------------------------------------- 5
General Safety Instructions ------------------------------------------------------------------------------ 6
Safety Symbols ---------------------------------------------------------------------------------------------------------------------6
Handling Energized Products ---------------------------------------------------------------------------------------------------6
General Safety Practices ------------------------------------------------------------------------------------------------------------------------6
Connection of AC Mains-------------------------------------------------------------------------------------------------------------------------7
Connection of DC Mains-------------------------------------------------------------------------------------------------------------------------7
Preventing Electrostatic Discharge Damage--------------------------------------------------------------------------------7
Chapter 1 Product Overview ------------------------------------------------------------------------- 1
1.1 Overview---------------------------------------------------------------------------------------------------------------------1
1.2 Function Features---------------------------------------------------------------------------------------------------------1
1.3 Ordering information------------------------------------------------------------------------------------------------------1
Chapter 2 Technical Specifications---------------------------------------------------------------- 5
2.1 Technical specifications of E1 interface ---------------------------------------------------------------------------------5
2.2 Technical specifications of the optical interface -----------------------------------------------------------------------5
2.3 Power supply-------------------------------------------------------------------------------------------------------------------5
2.4 Operating environment-------------------------------------------------------------------------------------------------------6
2.5 Storing environment ----------------------------------------------------------------------------------------------------------6
2.6 Outline and structure ---------------------------------------------------------------------------------------------------------6
Chapter 3 Device Appearance and Descripiton------------------------------------------------ 7
3.1 Device front panel-------------------------------------------------------------------------------------------------------------7
3.2 Device rear panel--------------------------------------------------------------------------------------------------------------7
3.3 Indicator definition-------------------------------------------------------------------------------------------------------------8
3.4 Interface description--------------------------------------------------------------------------------------------------------10
Chapter 4 Device Settings ---------------------------------------------------------------------------12
4.1 DIP switch description------------------------------------------------------------------------------------------------------12
4.1.1 DIP switch location----------------------------------------------------------------------------------------------------------------------- 12
4.1.2 DIP switch description ------------------------------------------------------------------------------------------------------------------ 12
4.1.3 Default settings --------------------------------------------------------------------------------------------------------------------------- 18
Chapter 5 Basic Connection and Typical Application --------------------------------------19
5.1 Basic connection ------------------------------------------------------------------------------------------------------------19
5.1.1 Connect the optical interface---------------------------------------------------------------------------------------------------------- 19
5.1.2 Connect the E1 interface--------------------------------------------------------------------------------------------------------------- 20
5.1.3 Connect to the power supply---------------------------------------------------------------------------------------------------------- 20
5.2 Typical application-----------------------------------------------------------------------------------------------------------20
5.2.1 Point-to-point “internal clock – line-in clock” structure -------------------------------------------------------------------------- 20
5.2.2 Point-to-point “V.35 terminal clock – line-in clock” structure------------------------------------------------------------------- 21
Chapter 6 Network Management Features------------------------------------------------------22
6.1 Network management platform------------------------------------------------------------------------------------------22
6.2 Network management query ---------------------------------------------------------------------------------------------22
6.3 Network management configuration------------------------------------------------------------------------------------22
Chapter 7 Device Installation Preparation and Connection-------------------------------23
7.1 Pre-installation checking and preparing-------------------------------------------------------------------------------23
7.1.1 Make sure that the E1 cable applied meet the requirement of the device------------------------------------------------- 23
7.1.2 Make sure that the fiber applied matches the optical transceiver of RC831-60-FV35---------------------------------- 23
7.1.3 Confirm the fiber cable type applied------------------------------------------------------------------------------------------------- 23
7.2 Installation procedures-----------------------------------------------------------------------------------------------------23
7.2.1 Device installation------------------------------------------------------------------------------------------------------------------------ 23
7.2.2 Cable connection------------------------------------------------------------------------------------------------------------------------- 23
7.2.3 Device electrifying ----------------------------------------------------------------------------------------------------------------------- 23
Appendix A Cable Making--------------------------------------------------------------------------------25
A.1 E1 cable making-------------------------------------------------------------------------------------------------------------25
Appendix B FAQ --------------------------------------------------------------------------------------------27

Release Notes
Date of Release Manual Version Revisions
20071114 200706 REV.A

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 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.
All extension slots are not hot-swappable
Before operating modules in the electricity conditions, please be noticed that optical transceivers
shall be connected with optical fiber wires or shield with optical transceiver cover for fear that laser
light harms to operator’s eyes.
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 Overview
RC831-60-FV35 is a stand-alone single-optical-port PDH multiplexer independently developed by
Raisecom Technology Co., Ltd. RC831-60-FV35 is a fiber transmission device aiming at network
access market. It can multiplex at most 1 line of E1 data and 1 line of V.35 data up to 1 line of fiber
and realize remote network management at the same time.
1.2 Function Features
¾Remote device manageable
In support of remote management while work in pair of modular multiplexer for SNMP
network management
¾Indication for both local and remote site alarms
¾Remote device power-off detection and alarm notification
¾ALS function is supported to effectively control the output of optical signal in no connection
status
¾1 E1 interface working at 2048Kbps transparent transmission mode
¾Local and remote E1 loopback testing function makes fault removal easier
¾1 M34 interface for the transmission of 1 line of V.35 data
¾Local and remote V.35 loopback testing function makes line testing, device open and
maintenance convenient.
¾The V.35 interface supports both framed E1 and unframed (transparent) E1 transmission
mode.
For V.35 interface working at framed mode, the bandwidth of the V.35 interface can be
configured to N x 64Kbps (N=1~31) by setting a succession of bits of the corresponding DIP
switch and the bandwidth can also be configured by assigning time slots in the network
management system.
¾The V.35 interface provides 3 clock modes: internal clock (internal timing), line-in clock
(follows the E1 line timing), V.35 terminal clock (follows the V.35 interface timing).
¾When the V.35 interfaces on both sides of the communication are working at framed E1 mode,
the timeslot configuration of the local device will automatically follow the configuration of
the remote device.
¾The inbuilt bit error testing unit together with various loopback patterns completes line
diagnosis and testing.
¾Power consumption < 10W, and stable and reliable operation is guaranteed.
¾Adopt grand-scale ASIC chip
Low power consumption
4-layer circuit board design guarantees high reliability.
1.3 Ordering information
Device Model Description
RC831-60-FV35-M-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, multi-mode, transmission distance 0~2km,

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single power supply, 220V AC power supply.
RC831-60-FV35-S1-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, single-mode, transmission distance 0~25km,
single power supply, 220V AC power supply.
RC831-60-FV35-S2-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, single-mode, transmission distance 10~60km,
single power supply, 220V AC power supply.
RC831-60-FV35-S3-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, single-mode, transmission distance 15~120km,
single power supply, 220V AC power supply.
RC831-60-FV35-SS13-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1310nm, transmission distance 0~25km, single
power supply, 220V AC power supply.
RC831-60-FV35-SS15-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1550nm, transmission distance 0~25km, single
power supply, 220V AC power supply.
RC831-60-FV35-SS23-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1310nm, transmission distance 10~50km, single
power supply, 220V AC power supply.
RC831-60-FV35-SS25-AC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1550nm, transmission distance 10~50km, single
power supply, 220V AC power supply.

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RC831-60-FV35-M-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, multi-mode, transmission distance 0~2km,
single power supply, -48V DC power supply.
RC831-60-FV35-S1-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, single-mode, transmission distance 0~25km,
single power supply, -48V DC power supply.
RC831-60-FV35-S2-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, single-mode, transmission distance 10~60km,
single power supply, -48V DC power supply.
RC831-60-FV35-S3-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
dual-strand, single-mode, transmission distance 15~120km,
single power supply, -48V DC power supply.
RC831-60-FV35-SS13-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1310nm, transmission distance 0~25km, single
power supply, -48V DC power supply.
RC831-60-FV35-SS15-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1550nm, transmission distance 0~25km, single
power supply, -48V DC power supply.
RC831-60-FV35-SS23-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal
including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1310nm, transmission distance 10~50km, single
power supply, -48V DC power supply.
RC831-60-FV35-SS25-DC Stand-alone device, 1 line of V.35 signal, 1 line of E1 signal

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including both 75Ωunbalanced E1 interface (BNC) and
120Ωbalanced E1 interface (RJ-45), 1 optical interface,
single-strand, two-wavelength, optical interface Tx
wavelength 1550nm, transmission distance 10~50km, single
power supply, -48V DC power supply.
LNote: Among RC831 series devices with optical transceivers for dual-strand fiber, the devices with same
optical transceivers can inter-connect with each other. For example, RC831-60-FV35-S1 can be inter-connected
with RC831-30-FV35-S1, RC831-240-BL-S1 and other RC831 series devices with S1 optical transceivers.
Among RC831 series devices adopting optical transceivers for single-strand fiber, device with SS13 can
communicate with device with SS15, while device with SS23 can communicate with device with SS25. For
example, RC831-60-FV35-SS13 can be inter-connected with RC831-60-FV35-SS15, RC831-30-FV35-SS15
and other RC831 series devices with SS15 optical transceivers.

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Chapter 2 Technical Specifications
2.1 Technical specifications of E1 interface
¾Bit rate: 2048Kbps±50ppm
¾Coding: HDB3
¾Interface type: BNC, RJ-45
¾Interface impedance: 75Ωunbalanced interface, 120 Ωbalanced interface
¾Physical characteristic: comply with ITU-T G.703 recommendations
¾Transfer characteristic: comply with ITU-T G.823 recommendations
¾Jitter tolerance: comply with ITU-T G.823 recommendations
2.2 Technical specifications of the optical interface
¾Bit rate: 150Mbps
¾Line coding: scrambled NRZ
¾Interface type: SC interface (FC interface made to order)
¾Optical transmission parameter: different optical transceivers have different optical interface
parameters, please see the table below.
Optical
transceiver
Wavelength
(nm)
Transmitting Optical
Power (dBm)
Overload
(dBm)
Extinction
Ratio (dB)
Receiving
Sensibility (dBm)
Transmission
Distance (Km)
M 1310 -20 ~ -14 > -14 > 8.2 < -28 0 ~ 2
S1 1310 -15 ~ -8 > -8 > 8.2 < -34 0 ~ 25
S2 1310 -5 ~ 0 > -8 > 8.2 < -34 10 ~ 60
S3 1550 -5 ~ 0 > -10 > 10 < -36 15 ~ 120
SS13 1310 -12 ~ -3 > -8 > 8.2 < -30 0 ~ 25
SS15 1550 -12 ~ -3 > -8 > 8.2 < -30 0 ~ 25
SS23 1310 -5 ~ 0 > -8 > 8.2 < -32 10 ~ 50
SS25 1550 -5 ~ 0 > -8 > 8.2 < -32 10 ~ 50
LNote: The transmission distance in the table indicates the maximal transmission distance in typical optical
fiber condition. The transmission distance that can be realized depends on the factual status of the network.
2.3 Power supply
AC power supply
¾Voltage: 220V
¾Allowance: 175 ~ 265V
¾Frequency: 50Hz
or:

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¾Voltage: 110V/230V
¾Allowance: 85 ~ 265V
¾Frequency: 50Hz/60Hz
DC power supply
¾Voltage: -48V
¾Allowance: -36 ~ -72V
OR:
¾Voltage: +24V
¾Allowance: +18 ~ +36V
Power consumption: < 10W
2.4 Operating environment
¾Operating temperature: 0 ~ 60℃
¾Operating humidity: ≤90% (25℃)
2.5 Storing environment
¾Storing temperature: -40 ~ 80℃
¾Storing humidity: 5% ~ 90%, no condensation
2.6 Outline and structure
¾Physical outline: nonstandard stand-alone device
¾Dimension: 38mm (Height) x 186mm (Width) x 142mm (Depth)
¾Net Weight: 0.9 Kg

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Chapter 3 Device Appearance and Descripiton
3.1 Device front panel
3.2 Device rear panel
RC831-60-FV35 with AC power supply:
RC831-60-FV35 with DC power supply:

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3.3 Indicator definition
The indicators on the device front panel show the current working status of device power supply,
optical interface, and E1 interface. The definition of the indicators is described in the table below:
Number Indicator Color Description
Indicators for the power supply
1 LPR Red Remote device power-off indicator.
ON: both the local and remote devices are
operating normally when the remote system is
power off.
OFF: other status
2 PWR Green Power supply indicator.
ON: the power supply is working normally.
Indicators for the V.35 interface
3 LOF Red V.35 interface data channel, loss of G.704
frame from fiber receiving signal alarm
indicator
ON: local E1 LOF alarm only
OR alarm occurs on both local and remote
site.
Flickering: remote E1 LOF alarm only
4 AIS Red V.35 interface data channel, fiber receiving
signal AIS alarm indicator

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ON: local AIS alarm only
OR alarm occurs on both local and remote
site
Flickering: remote AIS alarm only
5 TD Green V.35 interface TD signal indicator
Flickering: There is TD signal (transmission
data) data flow at the V.35 interface. The
frequency of the flicker depends on the bit rate
of the interface. When the rate is 64Kbps, the
flicker is the slowest. When the rate is
2048Kbps, the flicker is the fastest.
OFF: No TD signal (transmission data) data
flow at the V.35 interface.
6 RD Green V.35 interface RD signal indicator.
Flickering: There is RD signal (receiving data)
data flow at the V.35 interface. The frequency
of the flicker depends on the rate of the V.35
interface. When the rate is 64Kbps, the flicker
is the slowest. When the rate is 2048Kbps, the
flicker is the fastest.
OFF: No RD signal (receiving data) data flow
at the V.35 interface.
Indicators for the testing function
7 PAT Yellow Bit error testing indicator.
ON: received the pattern sent by the bit error
testing unit and the line is normal without error
bit.
Turn OFF for at least 1s: received the pattern
sent by the bit error testing unit, but error bit
has been spotted on the line.
OFF: The bit error testing function is disabled.
8 LOOP Yellow V.35 interface loopback status indicator
ON: V.35 interface local loopback
Flickering: V.35 interface remote loopback
OFF: no loopback at the V.35 interface
Indicators for the optical interface

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14 LOF Red ON: local optical interface receiving signal
Loss of Frame (LOF) alarm
Flickering: remote optical interface receiving
signal LOF alarm
15 LOS Red ON: local optical interface loss of receiving
signal alarm
Flicking: remote optical interface loss of
receiving signal alarm
17 E-3 Red ON: the BER of local optical interface
receiving signal exceeds 1E-3
Flickering: the BER of remote optical interface
receiving signal exceeds 1E-3
18 E-6 Yellow ON: the BER of local optical interface
receiving signal exceeds 1E-6
Flickering: the BER of remote optical interface
receiving signal exceeds 1E-6
Indicators for the E1 interface
19 LOS Red E1 interface loss of receiving signal alarm
indicator
ON: local E1 LOS alarm
Flickering: remote E1 LOS alarm
OFF: no LOS alarm at both local and remote
E1
3.4 Interface description
There is an optical interface and an E1 interface on the front panel of the device. The interfaces are
described in the table below:
Number Interface Interface
Type
Description
16 Optical
interface
SC Local Fiber interface
20-22 E1
interface
BNC and
RJ-45
Local E1 interface.
Both 75Ωunbalanced E1 interface
(BNC) and 120Ωbalanced E1 interface
(RJ-45) are provided.

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One V.35 interface is located on the rear panel of the device. It is described in the table below:
Interface Interface Type Description
V.35 interface M34 Local V.35 interface.

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Chapter 4 Device Settings
4.1 DIP switch description
4.1.1 DIP switch location
12 34 8765
DIPON
12 34 8765
DIPON
1234 8765
DIPON
12 34 8765
DIPON
1234 8765
DIPON
1234 8765
DIPON
12 34
DIP
ON
SW1 SW4
SW7
SW5 SW6
SW3SW2
The bottom view of the device
4.1.2 DIP switch description
6 8-bit DIP switches and 1 4-bit DIP switch locate on the bottom of the device. They are named SW1,
SW2, SW3, SW4, SW5, SW6, SW7, and their locations are shown in the figure above. For SW1~6,
the 8 bits from the left to the right are bit 1~8; for SW7, the 4 bits from the left to the right are bit
1~4. When a bit of the switch is turned to the lower side, it means that the bit is turned OFF. When a
bit of the switch is turned to the upper side, it means that the bit is turned ON.

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4.1.2.1 Timeslot configuration DIP switch SW1~4
In the tables below, “√” indicate Enable; “×” indicates Disable.
SW1 definition (default all OFF)
Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8
Definition V.35 Channel
Transmit
Mode
TS 1 TS 2 TS 3 TS 4 TS 5 TS 6 TS 7
ON Framed √√√√√√√
OFF Unframed ×××××××
SW2 definition (default all OFF)
Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8
Definition TS 8 TS 9 TS 10 TS 11 TS 12 TS 13 TS 14 TS 15
ON √√√√√√√√
OFF ××××××××
SW3 definition (default all OFF)
Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8
Definition TS 16 TS 17 TS 18 TS 19 TS 20 TS 21 TS 22 TS 23
ON √√√√√√√√
OFF ××××××××
SW4 definition (default all OFF)
Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8
Definition TS24 TS25 TS26 TS27 TS28 TS29 TS30 TS31
ON √√√√√√√√
OFF ××××××××
LNote:
1. If the SW1-1 is set to be unframed mode, then the switches for TS1 ~ TS31 are inapplicable.
2. If the SW1-1 is set to be framed mode, then the switches for TS1 ~ TS31 are not allowed to be OFF at