RC953-8FE16E1
Inverse Multiplexing Ethernet
Gateway
User manual
Raisecom Technology Co., Ltd
(06/2006)
Contents
1. Cautions.............................................................................................................. 1
2. Overview............................................................................................................. 2
2.1. Main features ........................................................................................... 2
2.2. Part number specification......................................................................... 3
2.3. Dimension ................................................................................................ 3
3. Parameters ......................................................................................................... 4
3.1. Basic configuration................................................................................... 4
3.2. Ethernet interface parameters.................................................................. 4
3.3. E1 interface parameters........................................................................... 4
3.4. CONSOLE interface parameters.............................................................. 5
3.5. SNMP network management interface parameter ................................... 5
3.6. Power supply ........................................................................................... 5
3.7. Ambience ................................................................................................. 5
4. How to use.......................................................................................................... 6
4.1. Front panel explanation............................................................................ 6
4.2. Rear panel explanation ............................................................................ 7
5. Typical application .............................................................................................. 9
6. Installation & Preparation.................................................................................. 10
6.1. Preparation before Installation ............................................................... 10
6.2. Installation.............................................................................................. 10
6.2.1. Cable preparation.......................................................................... 10
6.2.2. Connect the fast Ethernet port .......................................................11
6.2.3. Connect the SNMP network management port ..............................11
6.2.4. Connect the CONSOLE port ..........................................................11
6.2.5. Power on........................................................................................11
6.2.6. Service configuration..................................................................... 12
7. Q & A ................................................................................................................ 13
8. Appendix A: How to make CONSOLE cable..................................................... 14
9. Appendix B: Abbreviations................................................................................ 15
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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.
This series product 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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2. Overview
RC953-8FE16E1 is an Inverse Multiplexing Ethernet Gateway that delivers Ethernet
services over existing TDM transportation network. It can be deployed in central site for
aggregating subscribers or in customer premises enabling Inverse Multiplexing for
enlarging much more bandwidth.
RC953-8FE16E1 provides 8 Ethernet ports and 16 E1 ports (both balanced and
unbalanced) for subscribers and functions as a bridge between IP-based network and
leased circuits.
Additionally its advanced features such as automatic E1 link adjustment,
Ethernet port trunking (Link Aggregation for redundant Ethernet Access) and redundant
power supply provide our carriers a cost-effective, flexible and reliable solution for
high-quality Ethernet Service delivery by using TDM network resources.
2.1. Main features
z Provide 16 E1 interfaces and the E1 working mode can be Single E1 Mode and
Inverse Multiplexing Mode;
z Provide 8 fast Ethernet interfaces, which support auto-negotiation, auto-MDI/MDIX,
10M/100M, half/full duplex and IEEE802.3x flow control;
z HDLC-over-E1 encapsulation
z In single E1 mode:
Support both framed and unframed E1 mode
Only one E1 link in each transmission channel
With RC952 in remote sites in hub-and-spoke topology
z In E1 Inverse Multiplexing mode:
Adopt frame-interleave multiplexing to realize the transportation of Ethernet over
multiple E1
With RC953-FE4E1/8E1 in remote sites in hub-and-spoke topology
E1 link sequence auto-sensing
The maximum relative latency of E1 line is +/-16ms
Automatically adjust the E1 link capacity of transmission channel if one or more
E1 link fails
Only support framed E1 (PCM31, FAS+CRC4 by default), CRC auto-negotiation
and is configurable
z Ethernet switching function:
4096 MAC address
Transparently forward BPDU, GMRP, GVRP and IGMP packets
Maximum Transmission Unit: 1536 bytes
Ethernet port trunking (Link Aggregation for redundant Ethernet Access)
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z E1 loop back and BERT function
z Complete E1 line indicators on front panel
z E1 interface type: 2 DB37 for both balanced and unbalanced interfaces
z SNMP, CONSOLE and Telnet management (any of the 8 fast Ethernet can be SNMP
network management interface) and support local and remote field firmware upgrade.
z 1U chassis and can be installed in 19’’ rack
z Redundant power supply
z Power consumption <20W (at maximum load)
z Working temperature: -5℃- 50℃
2.2. Part number specification
Part number: RC953 - A - B - C
8FE16E1 BL AC
Blank DC
RC953: inverse multiplexing Ethernet gateway
A field: 8FE16E1 indicates there are 8 fast Ethernet ports and 16 E1 ports.
B field: E1 connector type: BL or blank.
Blank: 75ohm unbalanced BNC connector.
BL: 120ohm balanced RJ-45 connector.
C field: power supply is AC or DC
*24V DC is customized.
2.3. Dimension
International standard 19’’ 1U structure:
430mm(W)×44.45mm×(H)×266mm(D)
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3. Parameters
3.1. Basic configuration
z Main circuit: 8 fast Ethernet ports, 16 E1 ports.
z Power supply: two power supply modules, 90-264V/AC or -36V- -72V/DC.
z Management interface: CONSOLE, SNMP network management interface
(utilize any of the 8 fast Ethernet ports).
3.2. Ethernet interface parameters
z Speed: 10/100M auto-negotiation
z Connector: RJ-45
z IEEE802.3 compliant
z IEEE802.3x flow control
z AUTO-MDI/MDIX
3.3. E1 interface parameters
z 75ohm unbalanced or 120ohm balanced E1 connector.
z 16 E1 ports, the first 8 E1 ports utilize one DB37 and the second 8 E1 ports
utilize another DB37.
z Bit rate: 2048Kbps±50ppm.
z Line coding: HDB3.
z Input impedance: 75ohm unbalanced.
z Electric characteristic: ITU-T G.703 compliant.
z Frame structure: ITU-T G.704 compliant
z Jitter: ITU-T G.823 compliant.
z In single E1 mode:
E1 interface supports both framed and unframed E1 mode and can be
configured through software (unframed mode by default).
In framed E1 mode, support N*64k sub-rate access and FAS (PCM31
without CRC4), FAS+CRC4 (PCM31 with CRC4), FAS+CAS (PCM30
without CRC4) and PAS+CRC4+CAS (PCM30 with CRC40).
z In E1 Inverse Multiplexing mode:
Adopt frame-interleave multiplexing to realize the transportation of Ethernet over
multiple E1.
E1 wire sequence auto-sensing
The maximum relative latency of E1 line is +/-16ms
Automatically adjust the E1 link capacity of transmission channel if one or more
E1 link fails
Only support framed E1 (PCM31, FAS+CRC4 by default), CRC auto-negotiation
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and is configurable
z There are three status indicators for each E1 circuit:
LOS: Loss of Signal (local)
LAL: local E1 general alarm, including AIS(alarm indication signal), LOF( Loss of
Frame), CRC(Cyclic Redundancy Check)
RAL: remote E1 alarm, including LOS, AIS, LOF, CRC
z Local and remote E1 loop back
z E1 BERT (bit error rate tester) function
z Traffic counter provides an effective E1 link monitoring by statistics collection of Rx,
TX, total and error packets amount on E1 port.
z 4M Bytes buffer for each Ethernet port to avoid packet loss
3.4. CONSOLE interface parameters
● Connector type: RJ-45
● RS232 compliant
● Rate: 9600bps
3.5. SNMP network management interface parameter
● Utilize one of the 8 fast Ethernet ports, please refer to chapter 3.2
3.6. Power supply
● Redundant power supply.
● Voltage range: -48VDC, –36V - -72V
220VAC, 90V- 264V
● Power consumption: <20W
3.7. Ambience
● Temperature: -5℃-50℃
● Relative Humidity: ≤90%(35℃)
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4. How to use
4.1. Front panel explanation
123 4
5
6
7
8
9
RC953-8FE16E1
Figure 4-1 Front
Table 4-1 Explanation of
RC953-8FE16E1 front panel
N
o.
Explanati
on
Indicator
color
Description
1 Grounding
2
SYS and
PWR
indicator
Green SYS, Flashing indicates CPU work normally.
PWR, ON indicates equipment is powered on.
3
PWR1
and
PWR2
Green PWR1, ON indicates the first power supply works normally
PWR2, ON indicates the second power supply works normally.
Explanation of PWR, PWR1and PWR2 combination:
PWR PWR1 PWR2 Explanation
ON ON ON The two power supply modules and main circuit
works normally.
ON ON OFF The first power supply works normally, the second
works abnormally and the main circuit works
normally.
ON OFF ON The first power supply works abnormally, the second
works normally and the main circuit works normally.
OFF ON ON The first power supply works normally, the second
works normally but the main circuit works
abnormally.
OFF ON OFF The first power supply works normally, the second
works abnormally but the main circuit works
abnormally.
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OFF OFF ON The first power supply works abnormally, the second
works normally but the main circuit works
abnormally.
OFF OFF OFF Not powered on or neither of the power supply
module works normally.
4
CONSOL
E
Local management port which connects to management PC
5
Ethernet
port
indicator
Green/or
ange
1-8 fast Ethernet ports. And each port has two indicators: LNK/ACT (green)
and 100M indicator (orange).
LNK/ACT, flashing indicates data is being received;
100M, ON indicates the speed of fast Ethernet is 100M and OFF indicates
10M.
6
1-8 E1
indicator
Red Each E1 circuit has three indicators, from top to bottom are:
(Top) LOS: Loss of Signal (local).
(Middle) LAL: local general alarm, including AIS (alarm indication signal),
LOF (loss of frame), CRC (cyclic redundancy check).
(Bottom) RAL: remote general alarm, including LOS, AIS, LOF, CRC.
*note: when both LOS and LAL are ON at the same time, this indicates GID
alarm.
7
1-8 E1
connector
DB37 connector which connects with special cable.
8
9-16 E1
indicator
Red Each E1 circuit has three indicators, from top to bottom are:
(Top) LOS: Loss of Signal (local).
(Middle) LAL: local general alarm, including AIS (alarm indication signal),
LOF (loss of frame), CRC (cyclic redundancy check).
(Bottom) RAL: remote general alarm, including LOS, AIS, LOF, CRC.
*note: when both LOS and LAL are ON at the same time, this indicates GID
alarm.
9
9-16 E1
connector
DB37 connector which connects with special cable.
4.2. Rear panel explanation
ON
OFF
21
Figure 4-2 rear panel of RC953-8FE16E1
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Table 4-2: explanation of RC953-8FE16E1 rear panel
Numb
er
Explanation Description
1
Power supply
switch for the
device
ON/OFF.
2
Power supply
connector
Two types, AC and DC.
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5. Typical application
Figure 5-1 point-to-point topology
Figure 5-2 point-to-multi point topology
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6. Installation & Preparation
6.1. 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:
● Carefully read this manual
● Prepare all kinds of the cable. Ensure that they are not short-circuited. Refer to
Appendix A for cable making.
● Fix and install the equipment
● Connect E1 cable
● Configure the equipment according to the configuration guide
● Use the equipment correctly
6.2. Installation
6.2.1. Cable preparation
The following cables need to be prepared:
Table 6-1 Cable specification for RC953-8FE16E1 connectors
Connector Cable specification
10/100Mbps Electrical
Ethernet connector
(SNMP management
connector)
Cat. 5 100Base-T UTP, and the maximum
length is 100m (prepared by customers)
Connector cable for
E1 (the first 8 E1
utilize one DB37
connector and the
second 8 E1 utilize
one DB37 connector)
Please order the 2 cables separately
For 75ohm unbalanced E1 connector: one end of
the cable is DB37 and the other end are 8
75ohm unbalanced BNC connectors;
For 120ohm balanced E1 connector: one end of
the cable is DB37 and the other end are 8
balanced RJ-45 connectors;
CONSOLE connector
Provide one CONSOLE cable.
Please refer to the appendix for how to make
CONSOLE cable.
Power supply
connector
AC power supply: provide one AC power supply
cable.
DC power supply: provide one DC power supply
cable.
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6.2.2. Connect the fast Ethernet port
Connect one end of the Cat. 5 UTP cable with Ethernet router/switch and one end of the
cable with the fast Ethernet port of RC953-8FE16E1. The LNK/ACT indicator will be ON
after correct connection.
6.2.3. Connect the SNMP network management port
Connect one end of the Cat. 5 UTP cable with management PC and one end of the cable
with the fast Ethernet port of RC953-8FE16E1. The LNK/ACT indicator will be ON after
correct connection.
6.2.4. Connect the CONSOLE port
● Connect the RJ-45 connector of CONSOLE cable with the CONSOLE port on the
front panel.
● Connect the DB9 connector of CONSOLE cable with the PC serial port.
● Start the HyperTerminal program and configure the COM port properties as follows:
● Configure RC953-8FE16E1 according to software configuration guide
6.2.5. Power on
If power supply is DC –48V, first connect middle end to PGND. Turn off Power Supply,
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connect “-48V” end with the lower electric level cable, “0V” end with higher electric level
cable. Make sure no reverse connection, or no short circuited, and then turn on power.
When Power Supply is turned on, the PWR indicator should be ON.
6.2.6. Service configuration
Please refer to the command notebook and configuration guide of RC953-8FE16E1 for
the service configuration.
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7. Q & A
If there are any problems during installation and using, try the following proposals. If the
problems still can not be solved, please contact distributors/agents for help.
● If PWR, PWR1 and PWR2 are all OFF
Please check if power supply cable is connected and then check if the Power Supply
Board works normally
*Explanation of PWR, PWR1and PWR2 combination:
PWR PWR1 PWR2 Explanation
ON ON ON The two power supply modules and main circuit works normally.
ON ON OFF The first power supply works normally, the second one works abnormally
and the main circuit works normally.
ON OFF ON The first power supply works abnormally, the second one works normally and
the main circuit works normally.
OFF ON ON The first power supply works normally, the second one works normally but the
main circuit works abnormally.
OFF ON OFF The first power supply works normally, the second one works abnormally but
the main circuit works abnormally.
OFF OFF ON The first power supply works abnormally, the second one works normally but
the main circuit works abnormally.
OFF OFF OFF Not powered on or neither of the power supply module works normally.
● E1 LOS indicator is ON
Answer: Loss of receiving signal occurs at e1 port. Check whether E1 cable is connected
correctly; if there is still LOS alarm please change the E1 cable otherwise there is
something wrong with the equipment.
● Ethernet LINK indicator OFF
Answer: please check if the UTP cable is broken off first and then check if the equipment
that connects with RC953-8FE16E1 works normally. Please make sure that the correct
Ethernet cable is used.
● Packets loss during traffic transmitting
Answer: Firstly, please check the connection of Ethernet and E1 cables, and make sure
the Channel, Map and DIP-switch configuration is correct.
Secondly, please avoid loops of Ethernet interfaces. For example, more than one
Ethernet interfaces can not connect to a same Ethernet switch if they are not configured
as Trunk interfaces.
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8. Appendix A: How to make CONSOLE cable
Pin definitions:
RJ45 pins Function DS9 pins
1 NC -
2 DSR# 6
3 RxD 3
4 GND 5
5 GND 5
6 TxD 2
7 DTR# 4
8 NC -
“-” indicates the relative RJ45 pin is not connected (NC).
DB9 pins which are not in the list are not connected (NC).
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9. Appendix B: Abbreviations
EoPDH
Ethernet over PDH
PDH
Pseudo-synchronous Digital Hierarchy.
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@2006 Raisecom Technology Co., Ltd.
All trademarks are the property of their respective owners.
Technical information may be subject to change without prior notification.
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