Raisecom RC953-4FE E1T1 Series User manual

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RC953-4FExE1T1 (REV.A)User Manual

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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: Building 2, No. 28 of the Shangdi 6th Street, 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 RC953-4FExE1T1 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 RC953-4FExE1T1 specification, instead of the web page above, please
send comments to:
[email protected]
We hope to hear from you!

CONTENTS
Chapter 1 Product Overview ------------------------------------------------------------------------- 1
1.1 Overview---------------------------------------------------------------------------------------------------------------------1
1.2 Main features---------------------------------------------------------------------------------------------------------------1
1.3 Ordering information------------------------------------------------------------------------------------------------------2
Chapter 2 Technical Specifications---------------------------------------------------------------- 4
2.1 E1 interface specification------------------------------------------------------------------------------------------------4
2.2 Ethernet interface specification----------------------------------------------------------------------------------------4
2.3 CONSOLE interface specification-------------------------------------------------------------------------------------4
2.4 Power supply---------------------------------------------------------------------------------------------------------------4
2.5 Working environment-----------------------------------------------------------------------------------------------------4
2.6 Storing environment ------------------------------------------------------------------------------------------------------5
2.7 Outlook structure ----------------------------------------------------------------------------------------------------------5
Chapter 3 Device Appearance and Description------------------------------------------------ 6
3.1 Device front panel and description of LED--------------------------------------------------------------------------6
3.2 Rear panel description---------------------------------------------------------------------------------------------------7
Chapter 4 Basic Principle and Typical Application ------------------------------------------- 9
4.1 Basic principle--------------------------------------------------------------------------------------------------------------9
4.2 Typical application---------------------------------------------------------------------------------------------------------9
Chapter 5 Device Installation Preparation and Connection-------------------------------11
5.1 Preparation before installation ---------------------------------------------------------------------------------------11
5.1.1 Cable preparation----------------------------------------------------------------------------------------------------------------------11
5.1.2 Ethernet cable and connection requirements-----------------------------------------------------------------------------------11
5.2 Installation-----------------------------------------------------------------------------------------------------------------12
5.2.1 Device installation--------------------------------------------------------------------------------------------------------------------- 12
5.2.2 Connect the cables ------------------------------------------------------------------------------------------------------------------- 12
5.2.3 Power on -------------------------------------------------------------------------------------------------------------------------------- 12
5.2.4 Normal working status --------------------------------------------------------------------------------------------------------------- 13
Appendix A Cable Making--------------------------------------------------------------------------------14
Appendix B Acronyms------------------------------------------------------------------------------------15
Appendix C FAQ --------------------------------------------------------------------------------------------16

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.
All extension slots are not hot-swappable.
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 Overview
RC953-4FExE1T1 series products are EoPDH interface converter with Ethernet Demarcation and
powerul Ethernet management function. These devices have 4 Ethernet interfaces and 4/8 E1/T1
interfaces. Ethernet frame encapsulated in HDLC or GFP (customer optional) and mainly used in
accessing or delivering Ethernet service with bandwidth lower than 16Mbps.
Basic function of RC953-4FExE1T1 series products: encapsulate ethernet frame from FE port into
HDLC or GFP (forming EoPDH signal) and mapping it into VCG (one VCG may contain 1~4 or
1~8 lines of E1); and de-mapping out Ethernet data according to VCG in inverse direction. These
type of devices are usually used at remote site, realizing Ethernet data long distance transmission
over TDM network (including PDH and SDH) by building network with EoPDH device at central
office.
Ethernet Demarcation of RC953-4FExE1T1 series products means end-to-end ethernet OAM based
on IEEE 802.3ah and 802.1ag, port rate limit and QOS, etc. functions.
At present, RC953-4FExE1T1 series include 4 types: RC953-4FE4E1T1-BL, RC953-4FE8E1T1-BL,
RC953-4FE4E1, RC953-4FE8E1.
Note: T1 is not in support of by this series products at present, so there is no related description in
this manual.
1.2 Main features
¾Provide 4 Ethernet interfaces:
zAuto-negotiation: AUTO-MDIX, 10M/100M full/half-duplex, in support of 802.3x flow
control in full-duplex mode and back pressure in half-duplex mode;
zMTU: maximum transmission unit up options in 1522 bytes or 1632 bytes, 1632 bytes
by default.
¾Provide 4/8 lines of E1 interfaces:
zRC953-4FE4E1T1-BL and RC953-4FE8E1T1-BL support balanced E1 (120Ω);
zUnbalanced E1 (75Ω) is availabled by both RC953-4FE4E1 and RC953-4FE8E1;
zE1 frame structure conforms to G.704 criterion;
zElectrical feature conforms to G.703 criterion;
zIn support of E1 short distance mode, interface receiving sensitivity is -15dB;
zJitter conforms to G.823 criterion.
¾Abundant system management:
zCLI configuration;
zTelnet configuration;
zConsole configuration;
zBuilt-in WEB management configuration;
zSNMP.
¾Ethernet functions:
zEthernet switching supports VLAN mode in comply with IEEE802.1Q; Q-in-Q
(Double-tagged-vlan) mode;
zMAC address list: 8K MAC address, in support of 100 static MAC address,
enable/disable MAC address learning over port, MAC address learning amount limit

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(1~255) over port;
zFrame size: maximum transmission unit up to 1632 bytes;
zStorm control: loop back detection of port, mirror, etc;
zInput/output flow control over port.
¾Ethernet frame encapsuplation in HDLC or GFP, customer optional:
In HDLC mode:
zTransmitting Ethernet frame to multi-path of E1 by packet interleaving method;
zSupporting E1 link number auto-sensing, and building or removing E1 link by
automation (like LCAS);
zMaximal latency among E1 links is +/- 16ms;
zE1 port only supports framed mode, adopting FAS+CRC4 PCM31 format, CRC
auto-negotiation and customized configuration;
zE1 inverse multiplexing (can be only one E1 path, but it needs at least configure 2 E1
paths if interconnect with aggregation device such as RC953E).
In GFP mode:
zTransmitting Ethernet frame to multi-path of E1 by byte interleaving method;
zSupporting E1 link number auto-sensing, and building or removing E1 link by
automation (LCAS);
zMaximal latency among E1 links is +/- 256ms;
zE1 port only supports framed mode, adopting FAS+CRC4 PCM31 format, CRC
auto-negotiation and customized configuration;
zE1 inverse multiplexing (VCAT enable mode, can be single VCAT or multiple VCAT
mode).
¾Supporting local external, clock master/slave mode setting for E1 interface;
¾In support of obtaining E1 interface LOS, LOF, AIS, CRC, GID Error and remote device E1
error alarm;
¾Fault pass-through from E1 line to Ethernet port and fault pass-through end to end at Ethernet
port are in support in GFP mode;
¾Online upgrade function;
¾Power supply and temperature monitor functions;
¾Single power supply, AC, DC or WP are optional;
¾Power consumption <10W, working reliable;
¾Working temperature: -5℃- 55℃, reletive humidity: ≤90% (at 35℃);
¾Certification criterions: EMC Class A, ESD.
1.3 Ordering information
RC953 - A - B - C
RC953: standalone inverse multiplexing interface converter.
A: the type of FE and the number of E1 interface: 4FE4E1T1, 4FE8E1T1, 4FE4E1 and 4FE8E1.
¾4FE4E1T1: 4 FE electrical interfaces and there are 4 E1 or T1 interfaces, can be customized.
¾4FE8E1T1: 4 FE electrical interfaces and there are 8 E1 or T1 interfaces, can be customized.
¾4FE4E1: 4 FE electrical interfaces and there are 4 E1 interfaces.
¾4FE8E1: 4 FE electrical interfaces and there are 8 E1 interfaces.
B: type of E1 or T1 interface, can be blank or BL. Balanced or unbalanced connector for E1 interface;
only balanced connector for T1 interface.
¾Blank: unblanced.
¾BL: balanced.
C: type of power supply for the whole device, AC, DC or WP are optional.
¾AC indicates AC 220V power supply;
¾DC indicates DC -48V power supply;
¾WP indicates wide range port supply.

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If users have other power supply requirement, such as DC 24V, please order in additional.
Table 1-1 Ordering information of RC953-4FExE1T1 series products
Device type Description
RC953-4FE4E1T1-BL- □Standalone device, 4 FE electrical interface and 4
E1/T1 balanced interfaces.
RC953-4FE8E1T1-BL- □Standalone device, 4 FE electrical interface and 8
E1/T1 balanced interfaces.
RC953-4FE4E1- □Standalone device, 4 FE electrical interface and 4 E1
unbalanced interfaces.
RC953-4FE8E1- □Standalone device, 4 FE electrical interface and 8 E1
unbalanced interfaces.
*□ at the end of device type indicates the option of power supply module.

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Chapter 2 Technical Specifications
2.1 E1 interface specification
¾Interface type: RJ45 connector for balanced device; BNC connector for unbalanced device;
¾Interface impedance: 75Ωfor unbalanced E1, or 120Ωfor balanced E1, or 100Ωfor balanced
T1;
¾Interface speed: 2048Kbps + 50ppm;
¾Coding type: HDB3;
¾Clock: 2.048MHz, maximum frequency offset is + 50ppm;
¾Frame structure: conform to ITU-T G.704;
¾Jitter: conform to ITU-T G.823;
¾Electrical feature: conform to ITU-T G.703.
2.2 Ethernet interface specification
¾Compliant criterion: IEEE 802.3 series;
¾Interface type: RJ45;
¾Interface rate: 10/100M auto-negotiation;
¾Duplex mode: full-duplex/half-duplex (FDX/HDX);
¾MDI/MDIX: auto-/MDIX, HUB/switch mode if auto-negotiation is disabled;
¾Flow control: IEEE802.3x flow control in full-duplex mode, back pressure flow control in
half-duplex mode.
2.3 CONSOLE interface specification
¾Compliant criterion: RS232;
¾Interface type: RJ45 connector;
¾Interface rate: baud rate is 9600.
2.4 Power supply
¾AC power supply:
Voltage: 220V
¾Tolerance: 180~240 (V)
¾Frequency: 50 Hz
¾DC power supply: -48V, tolerance: -36V~ -72V
¾WP: DC: -36~-370V, AC: 85~264V
¾Power consumption: 10W
2.5 Working environment
¾Temperature: -5℃-55℃
¾Relative Humidity: ≤90% (35℃)

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2.6 Storing environment
¾Temperature: -40℃~80℃
¾Relative Humidity: 5%~90% (no condensation)
2.7 Outlook structure
¾Standalone, white, unstandard chassis
¾Dimensions: 44mm (H)×300mm (W)×135mm (D)
¾Net weight: 1.425 (Kg)

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Chapter 3 Device Appearance and Description
3.1 Device front panel and description of LED
Figure 3-1 Front panel of RC953-4FE8E1T1-BL
Figure 3-2 Front panel of RC953-4FE4E1T1-BL
Figure 3-3 Front panel of RC953-4FE8E1
Figure 3-4 Front panel of RC953-4FE4E1
Description of RC953-4FE4E1T1-BL/8E1T1-BL front panel:
Table 3-1 RC953-4FE4E1T1-BL/8E1T1-BLfront panel explanation
No. Name Color Description

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1 Device model - There are 4 models in RC953-4FE4E1T1 series products.
2 SYS Green
ON: during power supplying process;
Flickering: the device is working normally (ON 0.5
seconds and OFF 0.5 seconds by turns)
3 PWR Green ON: the device has been powered on
4 CONSOLE - RJ45 connector
5 LNK/ACT Green
ON: link up, but no data receiving or transmitting;
Flickering: link up and there is data received or
transmitted;
OFF: link down.
One LNK/ACT LED for every Ethernet interface.
6 100M Green
ON: link up, working in 100M speed;
OFF: link up and working in 10M speed.
One 100M LED for every ethernet interface.
7 E1T1-LOS Red
E1 LOS indicator when customer configures in E1 mode;
T1 LOS indicator when customer configures in T1 mode.
One LOS LED for each E1/T1 link.
LOS: loss of signal alarm. ON: LOS; OFF: normal.
Note: Front panel of RC953-4FE4E1/8E1 and RC953-4FE4E1T1-BL/8E1T1-BL are almost
consistent. But RC953-4FE4E1/8E1 doesn’t have T1 LOS indication.
3.2 Rear panel description
The rear panel of RC953-4FE4E1T1-BL/8E1T1-BL:
Figure 3-5 Rear panel of RC953-4FE8E1T1-BL
Figure 3-6 Rear panel of RC953-4FE4E1T1-BL
Table 3-2 RC953-4FE4E1T1-BL/8E1T1-BLrear panel explanation
No. Name Description
1 E1T1
This interface is used as E1 interface.
This interface has two 4xRJ45 interfaces (only one 4xRJ45
interface for RC953-4FE4E1T1-BL), each RJ45 includes one

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E1 line, interface pin arrangement please see appendix A.
2 FE
4xRJ45 interface, each RJ45 contains 1 Ethernet interface.
Use common CAT-5 twisted pair, straight-through or cross-over
both ok.
3 Grounding Safe grounding connection.
4 Power supply Power supply interface of device, AC (220V)/DC (-48V)/WP.
Refer to product ordering information of Raisecom for detailed
power supply information.
The rear panel of RC953-4FE4E1 /8E1:
Figure 3-7 Rear panel of RC953-4FE8E1
Figure 3-8 Rear panel of RC953-4FE4E1
Table 3-3 RC953-4FE4E1/8E1 rear panel explanation
No. Name Description
1 E1
E1 interface only; composed by 8 BNC interfaces in two lines
(only 4 BNC interfaces for RC953-4FE4E1), every BNC
contains 1 E1 line. The upper line is for transmitting and the
lower line is for receiving.
2 FE
2x2 RJ45 interface, each RJ45 contains 1 Ethernet interface.
Use common CAT-5 twisted pair, straight-through or cross-over
both ok.
3 Grounding Safe grounding connection.
4 Power supply
Power supply interface of device, AC (220V)/DC (-48V)/WP.
Refer to product ordering information of Raisecom for detailed
power supply information.(Attention that RC953-4FE4E1/8E1
does not support WP at present)

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Chapter 4 Basic Principle and Typical Application
4.1 Basic principle
Figure 4-1 Basic principle of device
Ethernet switch unit accomplishes users’ ethernet data switches in ethernet interface; EoPDH unit
generates EoPDH signal by using ethernet frame that comes from ethernet switch unit and then,
mapping the signal to 4/8 E1/T1 and deliver to service line via E1/T1 interface.
4.2 Typical application

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Figure 4-2 Typical application
RC953-4FExE1T1 is a kind of Ethernet Demarcation device uplinking as E1 or T1. Users realize
effective network monitor and management by setting demarcation node between carrier network
and subscriber network.

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Chapter 5 Device Installation Preparation and Connection
5.1 Preparation before installation
Please check if the models and part numbers are in consistence first, and also check if the
equipments are damaged. There must be drying process if the equipment is damped.
Please follow the following steps when install and use this equipment:
¾Carefully read this manual
¾Prepare cables for connection and ensure there is no short-circuit and open-circuit
¾Make sure the power voltage is in working condition range and the device is connecting to
grounding very well
¾Prepare BERT for line quality detection
¾Fix the standalone device inside device shelf or place it in a safe and flat place, pay attention
to meet environment requirement
5.1.1 Cable preparation
The following cables need to prepared by user:
Specifications of RC953-4FExE1T1 series products interface connecting cable
Interface Cable specifications
Ethernet interface (RJ45) Common CAT-5 twisted pair, 4 pcs,
straight-through or cross over. (User prepare)
E1/T1 balanced interface
(RJ45)
120ΩE1 balanced cables, 4/8 pcs, or 100Ω
T1balanced cables, 4/8 pcs. (User prepare)
E1unbalanced interface (BNC) 75Ωunbalanced (BNC male connector) cables,
4/8 pcs. (User prepare)
Please make sure the type, pin arrangement, and interface impedance of E1/T1 on connected device
match to each other when interconnecting with other devices.
5.1.2 Ethernet cable and connection requirements
Connecting FE port of RC953-4FExE1T1 series products by CAT-5 twisted pair and the length of
twisted pair should not over 100 meters.
(1). Auto-MDI/MDIX function (crossover and straight-through auto-negotiation) can be enabled
when electrical interface is auto-negotiation. Use straight-through or crossover cable to connect with
other devices:
This device Other devices Connecting mode of RJ45 port
Switch Straight-through crossover
HUB Straight-through crossover
FE interface of
this device
Router Straight-through crossover

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NIC Straight-through crossover
(2). Auto-MDI/MDIX function is disabled when electrical interface is in force mode. Connecting as
following table:
This device Other devices Connecting mode of RJ45 port
Switch crossover
HUB crossover
Router Straight-through
FE interface of
this device
NIC Straight-through
5.2 Installation
Following the steps to installation and setting:
5.2.1 Device installation
Paste the foot-pad at the bottom of the chassis.
Installing the chassis onto device shelf by machinery accessories (bend corner, bolts, etc.).
Connecting the the device to earth by the round grounding terminal and customized grounding cable.
5.2.2 Connect the cables
Connecting power supply interface of the device by AC/DC wire in accessories, and the other end
connecting to machine room power supply.
Use Console cable in the accessories to connect Console port of local device and serial interface of
user’s PC.
One end of network cable connects to ethernet electrical interface of the device and the other end
connects to switch or other devices.
For device with balanced E1/T1 interface, the two ends are RJ45 and contain 1 E1/T1 calbe
connection.
For device with unbalanced E1 interface, use BNC cable for connection.
5.2.3 Power on
The device can be powered on after installing and fixing. PWR indicator will turn ON after
electrifying to indicat the device is power on and working; after the system finishes starting in a few
seconds, SYS indicator starts flickeing to show device is working normally. FE port related LED is
OFF if it has not been connected to correct network cable; E1/T1 port related LOS LED is ON (red)
if the interface has not been connected to correct network cable. Refer to indicator description in
Chapter 3.

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5.2.4 Normal working status
PWR indicator is ON after power on the device to show the device is electrified. SYS indicator starts
to flickering later to show the device is working normally.

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Pin 1 Pin 8
Appendix A Cable Making
E1 balanced signal cable making:
The interface pin arrangement of 120Ωbalanced E1 as following:
(1-8 means RJ45 pin number)
Pin No. 1 2 3 4 5 6 7 8
Signal TD+ TD- RD+ RD-
Meaning Output+ Output- Input+ Input-
Make sure of the pin definition of other device when use 120Ωbalanced interface to connect other
devices. The pin connection at two ends of twisted pair:
TD+ and TD- is a pair in the cable to twisted together; RD+ and RD- is a pair in the cable to twisted
together.
RC953-4FExE1T1-BL adopts 4/8 RJ-45 to provide 4/8 E1 lines (as path A E1 line in the above
figure), strand 1, 2 for outputting, strand 4, 5 for inputting, strand 3, 6, 7 and 8 are unused.