Raisecom RCMS 2811 User manual

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RCMS 2811 Multi Service Fiber Optical
Ethernet Multiplexer User Manual
xx-xxxx-xxxx-xxxxxx-xx

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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:
Add: 1120, Haitai Tower, 229 Fourth North Loop Middle Road, Haidian District, Beijing
100083
Tel: [phone] Ext.878 (International Department)
Fax: [phone]
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CONTENTS
Chapter 1 System Overview-------------------------------------------------------------------------- 1
Main Features-----------------------------------------------------------------------------------------------------------------------1
Device Part Number Description -----------------------------------------------------------------------------------------------1
RCMS2811 Series Model List---------------------------------------------------------------------------------------------------2
Chapter 2 Parameters ---------------------------------------------------------------------------------- 3
Basic Configuration----------------------------------------------------------------------------------------------------------------3
Optical Port Characteristic -------------------------------------------------------------------------------------------------------3
E1 Port Characteristic-------------------------------------------------------------------------------------------------------------3
Fast Ethernet Port Characteristic ----------------------------------------------------------------------------------------------3
PC Agent Network Management Port Characteristic ---------------------------------------------------------------------3
V.35 Interface Characteristic ----------------------------------------------------------------------------------------------------4
Power Supply------------------------------------------------------------------------------------------------------------------------4
Ambience-----------------------------------------------------------------------------------------------------------------------------4
Dimension & Weight---------------------------------------------------------------------------------------------------------------4
Chapter 3 How to use----------------------------------------------------------------------------------- 5
Panel Introduction------------------------------------------------------------------------------------------------------------------5
RCMS2811 Series Front Panel ----------------------------------------------------------------------------------------------------------------5
RCMS2811 Series Back Panel-----------------------------------------------------------------------------------------------------------------6
RCMS 2811 Series Device Operation Introduction ---------------------------------------------------------------------------------------6
E1 Loop-back Test ---------------------------------------------------------------------------------------------------------------15
Application Example-------------------------------------------------------------------------------------------------------------16
Chapter 4 Installation and Test ---------------------------------------------------------------------17
Preparation-------------------------------------------------------------------------------------------------------------------------17
Installation Steps------------------------------------------------------------------------------------------------------------------17
Connecting Optical Port A and Optical Port B-------------------------------------------------------------------------------------------- 17
Connecting E1 Interface----------------------------------------------------------------------------------------------------------------------- 18
Connecting Fast Ethernet Interface--------------------------------------------------------------------------------------------------------- 18
Connecting Network Management Port---------------------------------------------------------------------------------------------------- 18
Connecting V.35 interface on sub card----------------------------------------------------------------------------------------------------- 18
Connecting Power Supply--------------------------------------------------------------------------------------------------------------------- 19
Power on Test ---------------------------------------------------------------------------------------------------------------------19
E1 Bit Error Test ------------------------------------------------------------------------------------------------------------------19
Mask Dummy E1 LOS Alarm--------------------------------------------------------------------------------------------------19
Chapter 5 Troubleshooting --------------------------------------------------------------------------20
Appendix A: Introduction of Cable making --------------------------------------------------------21
E1 Cable Making -----------------------------------------------------------------------------------------------------------------21
A.2 Cable of Ethernet -----------------------------------------------------------------------------------------------------------21
A.3 Agent Cable Making--------------------------------------------------------------------------------------------------------22

Preface
About This Manual
This manual introduces primary functions of the configuration management software for RC series
products.
Who Should Read This Manual
Sales and marketing engineers, after service staff and telecommunication network design engineers
could use this manual as a valuable reference. If you want to get an overview on features,
applications, architectures and specifications of Raisecom RC series integrated access devices, you
could find useful information in this manual as well.
Compliance
The RC series products developed by Raisecom are strictly complied with the following standards as
well as ITU-T, IEEE, IETF and related standards from other international telecommunication
standard organizations:
YD/T900-1997 SDH Equipment Technical Requirements - Clock
YD/T973-1998 SDH 155Mb/s and 622Mb/s Technical conditions of optical transmitter module and
receiver module
YD/T1017-1999 Network node interface for the Synchronous Digital Hierarchy (SDH)
YD/T1022-1999 Requirement of synchronous digital hierarchy (SDH) equipment function
YD/T1078-2000 SDH Transmission Network Technique Requirements-Interworking of Network
Protection Architectures
YD/T1111.1-2001 Technical Requirements of SDH Optical Transmitter/Optical Receiver
Modules——2.488320 Gb/s Optical Receiver Modules
YD/T1111.2- 2001 Technical Requirements of SHD Optical Transmitter/Optical Receiver
Modules——2.488320 Gb/s Optical Transmitter Modules
YD/T1179- 2002 Technical Specification of Ethernet over SDH
G.703 Physical/electrical characteristics of hierarchical digital interfaces
G.704 Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical
levels
G.707 Network node interface for the synchronous digital hierarchy (SDH)
G.774 Synchronous digital hierarchy (SDH) - Management information model for the network
element view
G.781 Synchronization layer functions

G.783 Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
G.784 Synchronous digital hierarchy (SDH) management
G.803 Architecture of transport networks based on the synchronous digital hierarchy (SDH)
G.813 Timing characteristics of SDH equipment slave clocks (SEC)
G.823 The control of jitter and wander within digital networks which are based on the 2048 kbit/s
hierarchy
G.825 The control of jitter and wander within digital networks which are based on the synchronous
digital hierarchy (SDH)
G.826 End-to-end error performance parameters and objectives for international, constant bit-rate
digital paths and connections
G.828 Error performance parameters and objectives for international, constant bit-rate synchronous
digital paths
G.829 Error performance events for SDH multiplex and regenerator sections
G.831 Management capabilities of transport networks based on the synchronous digital hierarchy
(SDH)
G.841 Types and characteristics of SDH network protection architectures
G.842 Interworking of SDH network protection architectures
G.957 Optical interfaces for equipments and systems relating to the synchronous digital hierarchy
G.691 Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers
G.664 Optical safety procedures and requirements for optical transport systems
I.731 ATM Types and general characteristics of ATM equipment
I.732 ATM Functional characteristics of ATM equipment
IEEE 802.1Q Virtual Local Area Networks (LANs)
IEEE 802.1p Traffic Class Expediting and Dynamic Multicast Filtering
IEEE 802.3 CSMA/CD Access Method and Physical Layer Instruction

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Chapter 1 System Overview
RCMS2811 is an ideal transmission device of optical fiber for point-to-point networks,
medium-sized and small capacity networks, such as wireless communication base stations, private
communication networks and switch networks. It can be applied to either public networks or various
private networks.
The transmission capacity of RCMS2811 is optional. The maximum capacity is 16 E1 channels and
one Fast Ethernet ports. RCMS2811 can be remotely managed.
Main Features
Device Part Number Description
RCMS Series Model List
Main Features
The device’s main features include:
¾Low power consumption due to extra large-scale ASIC chips; high reliability due to 4-layer
PCB
¾Provide local/remote network management
¾Alarm indicators of local and remote equipments
¾Remote device power off alarm
¾Support ALS function
¾Provide two fiber optical interface for redundant fiber optic link to improve stability
¾Provide maximum 16 E1 interfaces (2048Kbps), transparent mode
¾Local/remote E1 channel loop-back test function, easy fault location
¾One 10/100Mbps auto-negotiation Ethernet port
¾Support auto-negotiation and force working mode of Ethernet port
¾The maximum Ethernet frame size is 1916 bytes
¾Support flow control of IEEE802.3x in full duplex mode and back pressure in half duplex
mode
¾One extend slot can be used for one channel V.35 service
¾Redundant power supply of 220V, -48V and +24V.
¾Power consumption <10W, good working stability
Device Part Number Description
RCMS2811 series standalone Ethernet multiplexer’s part number is defined as the following rules:
RCMS2811 - A - B - C - D
Here A, B, C and D are alterable in the part number.
A: 120FE, 240FE and 480FE.
120FE/240FE/480FE means there are 4/8/16 channels E1 services and one Ethernet.
B:
Blank means E1 is 75Ωunbalanced interface;

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BL means E1 is 120Ωbalanced interface.
Note: As to the 4 E1 channels multiplexer, it has both balanced and unbalanced E1 interface so
it has no B option.
C: M, S1, S2, S3, SS1 and SS2
M means the optical port is dual-strand multi-mode and the transmission distance is 0-2km;
S1 means the optical port is dual-strand single mode and the transmission distance is 0-25km;
S2 means the optical port is dual-strand single mode and the transmission distance is 10-60km;
S3 means the optical port is dual-strand single mode and the transmission distance is 15-120km;
SS1 means the optical port is single strand single mode dual wavelength and the transmission
distance is 0-25km. The Tx wavelength of optical port A is 1310nm and port B is 1550nm;
SS2 means the optical port is single strand single mode dual wavelength and the transmission
distance is 10-50km. The Tx wavelength of optical port A is 1310nm and port B is 1550nm;
D: AC, DC48 and DC24.
AC means the power supply is AC;
DC48 means the power supply is DC -48V;
DC24 means the power supply is DC +24V.
Part number example:
RCMS 2811-240FE-BL-S1-AC
The specification of this device is: standalone 19 inches, 8 channels 120Ωbalanced E1 interfaces,
one Fast Ethernet interface, one extend slot ( can insert V.35 card), transmission distance is 0-25km,
two 220V AC power supplies.
RCMS2811 Series Model List
The RCMS series standalone dual optical port Ethernet multiplexer has 5 models as below table:
Part Number Description
RCMS2811-240FE-BL
One 10/100Mbps auto-negotiation Ethernet port(RJ45), 8 E1 interfaces, 120
Ωbalanced (RJ45).
RCMS2811-480FE-BL
One 10/100Mbps auto-negotiation Ethernet port(RJ45), 16 E1 interfaces,
120Ωbalanced (RJ45).
RCMS2811-120FE
One 10/100Mbps auto-negotiation Ethernet port(RJ45),4 E1 interfaces, both
120Ωbalanced (RJ45) and 75Ωunbalanced (BNC).
RCMS2811-240FE
One 10/100Mbps auto-negotiation Ethernet port(RJ45), 8 E1 interfaces, 75
Ωunbalanced (DB37).
RCMS2811-480FE
One 10/100Mbps auto-negotiation Ethernet port(RJ45), 16 E1 interfaces, 75
Ωunbalanced (DB37).

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Chapter 2 Parameters
This section contains the following information:
Basic Configuration
Optical Port Characteristic
E1 Port Characteristic
Fast Ethernet Port Characteristic
PC Agent Network Management
V.35 Interface Characteristic
Power Supply
Ambience
Dimension & Weight
Basic Configuration
The device’s basic configuration is as below:
¾2 optical ports, 4/8/16 E1 interfaces, one Fast Ethernet port and one extend slot for V.35 card;
¾Power supply: 220VAC, -48VDC and +24VDC;
¾Management port: PC Agent port.
Optical Port Characteristic
¾Rate: 150Mbps;
¾Line Code: NRZ plus scrambling code
¾Optical port mode: SC connector ( FC connector can be optional)
E1 Port Characteristic
¾Bit rate: 2048Kbps±50ppm
¾Line code: HDB3
¾Impedance of interface: 75Ω(unbalanced BNC interface) or 120Ω(balanced RJ-45
interface)
¾Electrical characteristics: complies with ITU-T G.703
¾Jitter Transfer characteristics: complies with ITU-T G.823
¾Input jitter tolerance: complies with ITU-T G.823
Fast Ethernet Port Characteristic
¾Port Type: RJ45;
¾Complied with IEEE802.3 standard;
¾10/100 auto-negotiation;
¾MDX/MDIX auto-negotiation.
PC Agent Network Management Port Characteristic
¾Port Type: RJ45;
¾Complied with RS232 standard;
¾Baud Rate: 19200bps.

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V.35 Interface Characteristic
¾Port Type: HDB26 Female;
¾Physics Characteristic: Complied with ITU suggestion;
¾Rate: E1 fractional mode V.35 rate is N×64Kbps（N=1~31）;
E1 unframed mode V.35 rate is 2048Kbps.
Power Supply
¾Power supply voltage:
DC: -48V Voltage: -36V ~-72V;
DC: +24V Voltage: +18V ~+36V;
AC: 220V Voltage: 180V~260V.
¾Power consumption: <10 W
Ambience
¾Temperature: 0 ~45℃
¾Humidity: ≤90% (25℃)
Dimension & Weight
¾Dimension: 440mm (W)×43.6mm×(H)×235mm(D);
¾Weight: 3Kg (including sub card).

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Chapter 3 How to use
This Chapter introduces configuration and operation of RCMS2811 series five types’ devices:
Panel Introduction
E1 Loop-back Test
Application Example
Panel Introduction
RCMS2811 Series Front Panel
Figure 3-1 RCMS 2811-480FE-BL Front Panel
Figure 3-2 RCMS 2811-480FE Front Panel
Figure 3-3 RCMS 2811-240FE-BL Front Panel
Figure 3-4 RCMS 2811-240FE Front Panel
Figure 3-5 RCMS 2811-120FE Front Panel

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RCMS2811 Series Back Panel
Figure 3-6 RCMS 2811 Series Back Panel of AC Mode
Figure 3-7 RCMS 2811 Series Back Panel of DC Mode
RCMS 2811 Series Device Operation Introduction
RCMS 2811-480FE-BLDevice Operation Introduction
Figure 3-8 RCMS 2811-480FE-BL Front Panel Description
1. System Indicator
The System indicators mainly indicate the working status of optical port, E1 port and Ethernet port.
Table 3-1 RCMS 2811-480FE-BL Front Panel Description 1-Indicator
No. Name Color Description
1 PWR1 RED The 1st power alarm indicator
It is on when the 1st power is not linked or working abnormally. It is off
when the 1st power works normally.
2 PWR2 RED The 2nd power alarm indicator
It is on when the 2nd power is not linked or working abnormally. It is off
when the 2nd power works normally.

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3 ALM RED General Alarm Indicator
It is stably on when there is a local alarm;
It is flash when there is remote alarm but no local alarm;
It is stably on when there are both local and remote alarm;
It is off when there is no local or remote alarm.
4 PWR GREEN Power Indicator. It is on when the power supply works normally.
5 LPR RED Remote device power off indicator
It is on when remote device power off after local and remote devices
works normally;
It is stably off on other conditions.
6 L WKA GREEN It is on when local optical port A is working.
7 R WKA GREEN It is on when remote optical port A is working.
8 L WKB GREEN It is on when local optical port B is working.
9 R WKB GREEN It is on when remote optical port B is working.
10 L LOSA RED It is on when the Rx signal of local optical port A is lost.
11 R LOSA RED It is on when the Rx signal of remote optical port A is lost.
12 L LOSB RED It is on when the Rx signal of local optical port B is lost.
13 R LOSB RED It is on when the Rx signal of remote optical port B is lost.
14 L LOF RED It is on when there is loss of frame alarm in local optical Rx signal.
15 R LOF RED It is on when there is loss of frame alarm in remote optical Rx signal.
16 L E-3 RED It is on when the bit error rate of local optical Rx signal is beyond 1E-3.
17 R E-3 RED It is on when the bit error rate of remote optical Rx signal is beyond 1E-3.
18 L E-6 YELLOW It is on when the bit error rate of local optical Rx signal is beyond 1E-6.
19 R E-6 YELLOW It is on when the bit error rate of remote optical Rx signal is beyond 1E-6.
20-35 LOS1-16 RED 1-16 E1 tributary Rx signal’s LOS alarm indicator.
It is on when there is LOS alarm of only local E1;
It is flash when there is LOS alarm of only remote E1;
It is on when there is LOS alarm of both local and remote E1;
It is off when there is no LOS alarm of local or remote E1.
36 LNK GREEN It is on when the Ethernet port links normally;
It is off when the Ethernet port doesn’t link or links abnormally.
37 100M GREEN It is on when the working speed of Ethernet port is 100M;
It is off when the working speed of Ethernet port is 10M.
38 ACT GREEN It is flash when there is data transmission currently;
It is off when there is no data transmission currently.
39 FDX GREEN It is on when the Ethernet port is working on full duplex mode;
It is off when the Ethernet port is working on half duplex mode;
It is flash when the Ethernet port is working on half duplex mode and
there is data collision.
NOTE: The upper row of indicators of “FIBER” group on front panel are local status indicators and the below
ones are remote status indicators.
2. Dip-switch of system controlling
The dip-switches are used to control optical port, E1 port and Ethernet port.
Table 3-2 RCMS 2811-480FE-BL Front Panel Description 2-ADDR Dip-switch
NO. Name Bits Description
Bit4 Bit3 Bit2 Bit1 Device Type
OFF OFF OFF OFF Remote Device
OFF OFF OFF ON The 1st local Device
OFF OFF ON OFF The 2nd local Device
OFF OFF ON ON The 3rd local Device
OFF ON OFF OFF The 4th local Device
OFF ON OFF ON The 5th local Device
40 ADDR
Dip-switch
OFF ON ON OFF The 6th local Device

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OFF ON ON ON The 7th local Device
ON OFF OFF OFF The 8th local Device
ON OFF OFF ON The 9th local Device
ON OFF ON OFF The 10th local Device
ON OFF ON ON The 11thlocal Device
ON ON OFF OFF The 12thlocal Device
ON ON OFF ON The 13th local Device
ON ON ON OFF The 14th local Device
ON ON ON ON The 15th local Device
4 bits
Local device can be connected by PC serial port through LNK-UP port to
realize network management. Address numbers of devices which are
concatenated on a PC serial port mustn’t be repeated. Local concatenated
devices are maximum 15pcs.
Table 3-3 RCMS 2811-480FE-BL Front Panel Description 3-ETH Dip-switch
NO. Name Bits Description
Bit1 Ethernet port auto-negotiation configuration. Bit1 = OFF, Ethernet
auto-negotiation is enable.
Bit1 = ON, Ethernet auto-negotiation is disable. When the Ethernet
negotiation is disabled the port’s MDI/MDIX function is disabled too, so
when connecting to switch the straight-through cable is needed and when
connecting to NIC and router the cross-over cable is needed.
Bit2 Ethernet port’s speed configuration when auto-negotiation is
disabled.
When Bit1 = ON, If Bit2 = OFF the Ethernet port’s speed is 100M;
If Bit2 = ON the Ethernet port’s speed is 10M;
When Bit1 = OFF the Bit2 is invalid.
Bit3 Ethernet port’s duplex mode configuration when auto-negotiation is
disabled.
When Bit1 = ON, If Bit3 = OFF the Ethernet port is on full-duplex mode;
If Bit3 = ON the Ethernet port is on half-duplex mode;
When Bit1 = OFF the Bit3 is invalid.
41 ETH
Dip-switch
4 bits
Bit4 the configuration of ALS function.
Bit4 = OFF, ALS function is disable.
Bit4 = ON, ALS function is enable.
Table 3-4 RCMS 2811-480FE-BL Front Panel Description 4-SEL Dip-switch
NO. Name Bits Description
Bit1, Bit2 Optical port Auto-negotiation/Force configuration.
Bit1, Bit2 = OFF OFF, Optical port A and B can be chosen automatically.
Bit1, Bit2 = OFF ON, Optical B is chosen.
Bit1, Bit2 = ON X, Optical A is chosen.
Bit3 mask/unmask alarm configuration of idle E1 tributary.
Bit3 = OFF, unmask alarm configuration of idle E1 tributary.
Bit3 = ON, mask alarm configuration of idle E1 tributary.
42 SEL
Dip-switch
4 bits
Bit4 Local/Remote E1 loop-back position configuration.
Bit4 = OFF, E1 remote loop-back.
Bit4 = ON, E1 local loop-back.
Table 3-5 RCMS 2811-480FE-BL Front Panel Description 5-E1 Loop Dip-switch
NO. Name Bits Description

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43 E1-LOOP
Dip-switch
8 bits Bit1-8 the 1st to 8th E1 tributary loop-back configuration.
Bit1 = OFF , the 1st E1 tributary is not loop-back;
Bit1 = ON, the 1st E1 tributary is loop-back.
The configuration method of Bit2 to Bit 8 is same as Bit 1.
44 E1-LOOP
Dip-switch
8 bits Bit1-8 the 9th to 16th E1 tributary loop-back configuration.
Bit1 = OFF , the 9th E1 tributary is not loop-back;
Bit1 = ON, the 9th E1 tributary is loop-back.
The configuration method of Bit2 to Bit 8 is same as Bit 1.
NOTE: The default status of all dip-switches is OFF.
3. Interface on front panel
There are E1 and PC-AGENT ports on front panel.
Table 3-6 RCMS 2811-480FE-BL Front Panel Description 6-Interface
NO. Name Bits Description
45 1-8 RJ45 1st -8th tributary 120ΩE1balanced interfaces.
46 9-16 RJ45 9th -16th tributary 120ΩE1 balanced interfaces.
LNK-UP
RJ45 Local network management interface. LNK-UP connects to PC serial
port or connects to upper device’s LNK-DWN interface when
concatenating.
47
LNK-DWN
RJ45 LNK-DWN connects to upper device’s LNK-UP interface when
concatenating. It complies with RS232 electrical standard and the
baud rate is 19200bps.
NOTE: 1. Hot-swapping of LNK-UP and LNK-DWN interfaces is forbidden.
2. Hot-swapping of sub-card interface on back panel is forbidden.
RCMS 2811-480FE Device Operation Introduction
The operation introduction is same as RCMS2811-480FE-BL except for E1 interface description.
Table 3-7 RCMS 2811-480FE Front Panel Description 1-Interface
NO. Name Bits Description
45 1-8 DB37
1st -8th tributary 75ΩE1unbalanced interfaces.
46 9-16 DB37
9th -16th tributary 75ΩE1unbalanced interfaces.
RCMS 2811-240FE-BLDevice Operation Introduction

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Figure 3-9 RCMS 2811-240FE-BL Front Panel Description
1. System Indicator
The System indicators mainly indicate the working status of optical port, E1 port and Ethernet port.
Table 3-8 RCMS 2811-240FE-BL Front Panel Description 1-Indicator
No. Name Color Description
1 PWR1 RED The 1st power alarm indicator
It is on when the 1st power is not linked or working abnormally. It is off
when the 1st power works normally.
2 PWR2 RED The 2nd power alarm indicator
It is on when the 2nd power is not linked or working abnormally. It is off
when the 2nd power works normally.
3 ALM RED General Alarm Indicator
It is stably on when there is a local alarm;
It is flash when there is remote alarm but no local alarm;
It is stably on when there are both local and remote alarm;
It is off when there is no local or remote alarm.
Note: It is not include the loss of unworking fiber port.
4 PWR GREEN Power Indicator. It is on when the power supply works normally.
5 LPR RED Remote device power off indicator
It is on when remote device power off after local and remote devices
works normally;
It is stably off on other conditions.
6 L WKA GREEN It is on when local optical port A is working.
7 R WKA GREEN It is on when remote optical port A is working.
8 L WKB GREEN It is on when local optical port B is working.
9 R WKB GREEN It is on when remote optical port B is working.
10 L LOSA RED It is on when the Rx signal of local optical port A is lost.
11 R LOSA RED It is on when the Rx signal of remote optical port A is lost.
12 L LOSB RED It is on when the Rx signal of local optical port B is lost.
13 R LOSB RED It is on when the Rx signal of remote optical port B is lost.
14 L LOF RED It is on when there is loss of frame alarm in local optical Rx signal.
15 R LOF RED It is on when there is loss of frame alarm in remote optical Rx signal.
16 L E-3 RED It is on when the bit error rate of local optical Rx signal is beyond 1E-3.
17 R E-3 RED It is on when the bit error rate of remote optical Rx signal is beyond 1E-3.
18 L E-6 YELLOW It is on when the bit error rate of local optical Rx signal is beyond 1E-6.
19 R E-6 YELLOW It is on when the bit error rate of remote optical Rx signal is beyond 1E-6.
20-27 LOS1-8 RED 1-8 E1 tributary Rx signal’s LOS alarm indicator.
It is on when there is LOS alarm of only local E1;
It is flash when there is LOS alarm of only remote E1;
It is on when there is LOS alarm of both local and remote E1;
It is off when there is no LOS alarm of local or remote E1.
28 LNK GREEN It is on when the Ethernet port links normally;
It is off when the Ethernet port doesn’t link or links abnormally.
29 100M GREEN It is on when the working speed of Ethernet port is 100M;
It is off when the working speed of Ethernet port is 10M.
30 ACT GREEN It is flash when there is data transmission currently;
It is off when there is no data transmission currently.
31 FDX GREEN It is on when the Ethernet port is working on full duplex mode;
It is off when the Ethernet port is working on half duplex mode;
It is flash when the Ethernet port is working on half duplex mode and
there is data collision.
2. Dip-switch of system controlling
The dip-switches are used to control optical port, E1 port and Ethernet port.
Table 3-9 RCMS 2811-240FE-BL Front Panel Description 2-ADDR Dip-switch
NO. Name Bits Description

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Bit4 Bit3 Bit2 Bit1 Device Type
OFF OFF OFF OFF Remote Device
OFF OFF OFF ON The 1st local Device
OFF OFF ON OFF The 2nd local Device
OFF OFF ON ON The 3rd local Device
OFF ON OFF OFF The 4th local Device
OFF ON OFF ON The 5th local Device
OFF ON ON OFF The 6th local Device
OFF ON ON ON The 7th local Device
ON OFF OFF OFF The 8th local Device
ON OFF OFF ON The 9th local Device
ON OFF ON OFF The 10th local Device
ON OFF ON ON The 11thlocal Device
ON ON OFF OFF The 12thlocal Device
ON ON OFF ON The 13th local Device
ON ON ON OFF The 14th local Device
ON ON ON ON The 15th local Device
32 ADDR
Dip-switch
4 bits
Local device can be connected by PC serial port through LNK-UP port to
realize network management. Address numbers of devices which are
concatenated on a PC serial port mustn’t be repeated. Local concatenated
devices are maximum 15pcs.
Table 3-10 RCMS 2811-240FE-BL Front Panel Description 3-ETH Dip-switch
NO. Name Bits Description
Bit1 Ethernet port auto-negotiation configuration. Bit1 = OFF, Ethernet
auto-negotiation is enable.
Bit1 = ON, Ethernet auto-negotiation is disable. When the Ethernet
negotiation is disabled the port’s MDI/MDIX function is disabled too, so
when connecting to switch the straight-through cable is needed and when
connecting to NIC and router the cross-over cable is needed.
Bit2 Ethernet port’s speed configuration when auto-negotiation is
disabled.
When Bit1 = ON, If Bit2 = OFF the Ethernet port’s speed is 100M;
If Bit2 = ON the Ethernet port’s speed is 10M;
When Bit1 = OFF the Bit2 is invalid.
Bit3 Ethernet port’s duplex mode configuration when auto-negotiation is
disabled.
When Bit1 = ON, If Bit3 = OFF the Ethernet port is on full-duplex mode;
If Bit3 = ON the Ethernet port is on half-duplex mode;
When Bit1 = OFF the Bit3 is invalid.
33 ETH
Dip-switch
4 bits
Bit4 The configuration of ALS function.
Bit4 = OFF, ALS function is disable.
Bit4 = ON, ALS function is enable.
Table 3-11 RCMS 2811-240FE-BL Front Panel Description 4-SEL Dip-switch
NO. Name Bits Description
Bit1, Bit2 Optical port Auto-negotiation/Force configuration.
Bit1, Bit2 = OFF OFF, Optical port A and B can be chosen automatically.
Bit1, Bit2 = OFF ON, Optical B is chosen.
Bit1, Bit2 = ON X, Optical A is chosen.
Bit3 mask/unmask alarm configuration of idle E1 tributary.
Bit3 = OFF, unmask alarm configuration of idle E1 tributary.
Bit3 = ON, mask alarm configuration of idle E1 tributary.
34 SEL
Dip-switch
4 bits
Bit4 Local/Remote E1 loop-back position configuration.
Bit4 = OFF, E1 remote loop-back.
Bit4 = ON, E1 local loop-back.

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Table 3-12 RCMS 2811-240FE-BL Front Panel Description 5-E1 Loop Dip-switch
NO. Name Bits Description
35 E1-LOOP
Dip-switch
8 bits Bit1-8 the 1st to 8th E1 tributary loop-back configuration.
Bit1 = OFF , the 1st E1 tributary is not loop-back;
Bit1 = ON, the 1st E1 tributary is loop-back.
The configuration method of Bit2 to Bit 8 is same as Bit 1.
3. Interface on front panel
There are E1 and PC-AGENT ports on front panel.
Table 3-13 RCMS 2811-240FE-BL Front Panel Description 6-Interface
NO. Name Bits Description
36 1-8 RJ45 1st -8th tributary 120ΩE1balanced interfaces.
LNK-UP
RJ45 Local network management interface. LNK-UP connects to PC serial
port or connects to upper device’s LNK-DWN interface when
concatenating.
37
LNK-DWN
RJ45 LNK-DWN connects to upper device’s LNK-UP interface when
concatenating. It complies with RS232 electrical standard and the
baud rate is 19200bps.
RCMS 2811-240FE Device Operation Introduction
The operation introduction is same as RCMS2811-240FE-BL except for E1 interface description.
Table 3-14 RCMS 2811-240FE Front Panel Description 1-Interface
NO. Name Bits Description
45 1-8 DB37
1st -8th tributary 75ΩE1unbalanced interfaces.
RCMS 2811-120FE Device Operation Introduction
Figure 3-10 RCMS 2811-120FE Front Panel Description
1. System Indicator
The System indicators mainly indicate the working status of optical port, E1 port and Ethernet port.
Table 3-15 RCMS 2811-120FE Front Panel Description 1-Indicator
No. Name Color Description

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1 PWR1 RED The 1st power alarm indicator
It is on when the 1st power is not linked or working abnormally. It is off
when the 1st power works normally.
2 PWR2 RED The 2nd power alarm indicator
It is on when the 2nd power is not linked or working abnormally. It is off
when the 2nd power works normally.
3 ALM RED General Alarm Indicator
It is stably on when there is a local alarm;
It is flash when there is remote alarm but no local alarm;
It is stably on when there are both local and remote alarm;
It is off when there is no local or remote alarm.
Note: It is not include the loss of unworking fiber port.
4 PWR GREEN Power Indicator. It is on when the power supply works normally.
5 LPR RED Remote device power off indicator
It is on when remote device power off after local and remote devices
works normally;
It is stably off on other conditions.
6 L WKA GREEN It is on when local optical port A is working.
7 R WKA GREEN It is on when remote optical port A is working.
8 L WKB GREEN It is on when local optical port B is working.
9 R WKB GREEN It is on when remote optical port B is working.
10 L LOSA RED It is on when the Rx signal of local optical port A is lost.
11 R LOSA RED It is on when the Rx signal of remote optical port A is lost.
12 L LOSB RED It is on when the Rx signal of local optical port B is lost.
13 R LOSB RED It is on when the Rx signal of remote optical port B is lost.
14 L LOF RED It is on when there is loss of frame alarm in local optical Rx signal.
15 R LOF RED It is on when there is loss of frame alarm in remote optical Rx signal.
16 L E-3 RED It is on when the bit error rate of local optical Rx signal is beyond 1E-3.
17 R E-3 RED It is on when the bit error rate of remote optical Rx signal is beyond 1E-3.
18 L E-6 YELLOW It is on when the bit error rate of local optical Rx signal is beyond 1E-6.
19 R E-6 YELLOW It is on when the bit error rate of remote optical Rx signal is beyond 1E-6.
20-23 LOS1-16 RED 1-4 E1 tributary Rx signal’s LOS alarm indicator.
It is on when there is LOS alarm of only local E1;
It is flash when there is LOS alarm of only remote E1;
It is on when there is LOS alarm of both local and remote E1;
It is off when there is no LOS alarm of local or remote E1.
24 LNK GREEN It is on when the Ethernet port links normally;
It is off when the Ethernet port doesn’t link or links abnormally.
25 100M GREEN It is on when the working speed of Ethernet port is 100M;
It is off when the working speed of Ethernet port is 10M.
26 ACT GREEN It is flash when there is data transmission currently;
It is off when there is no data transmission currently.
27 FDX GREEN It is on when the Ethernet port is working on full duplex mode;
It is off when the Ethernet port is working on half duplex mode;
It is flash when the Ethernet port is working on half duplex mode and
there is data collision.
2. Dip-switch of system controlling
The dip-switches are used to control optical port, E1 port and Ethernet port.
Table 3-16 RCMS 2811-120FE Front Panel Description 2-ADDR Dip-switch
NO. Name Bits Description
Bit4 Bit3 Bit2 Bit1 Device Type
OFF OFF OFF OFF Remote Device
OFF OFF OFF ON The 1st local Device
OFF OFF ON OFF The 2nd local Device
OFF OFF ON ON The 3rd local Device
OFF ON OFF OFF The 4th local Device
OFF ON OFF ON The 5th local Device
28 ADDR
Dip-switch
OFF ON ON OFF The 6th local Device

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OFF ON ON ON The 7th local Device
ON OFF OFF OFF The 8th local Device
ON OFF OFF ON The 9th local Device
ON OFF ON OFF The 10th local Device
ON OFF ON ON The 11thlocal Device
ON ON OFF OFF The 12thlocal Device
ON ON OFF ON The 13th local Device
ON ON ON OFF The 14th local Device
ON ON ON ON The 15th local Device
4 bits
Local device can be connected by PC serial port through LNK-UP port to
realize network management. Address numbers of devices which are
concatenated on a PC serial port mustn’t be repeated. Local concatenated
devices are maximum 15pcs.
Table 3-17 RCMS 2811-120FE Front Panel Description 3-ETH Dip-switch
NO. Name Bits Description
Bit1 Ethernet port auto-negotiation configuration. Bit1 = OFF, Ethernet
auto-negotiation is enable.
Bit1 = ON, Ethernet auto-negotiation is disable. When the Ethernet
negotiation is disabled the port’s MDI/MDIX function is disabled too, so
when connecting to switch the straight-through cable is needed and when
connecting to NIC and router the cross-over cable is needed.
Bit2 Ethernet port’s speed configuration when auto-negotiation is
disabled.
When Bit1 = ON, If Bit2 = OFF the Ethernet port’s speed is 100M;
If Bit2 = ON the Ethernet port’s speed is 10M;
When Bit1 = OFF the Bit2 is invalid.
Bit3 Ethernet port’s duplex mode configuration when auto-negotiation is
disabled.
When Bit1 = ON, If Bit3 = OFF the Ethernet port is on full-duplex mode;
If Bit3 = ON the Ethernet port is on half-duplex mode;
When Bit1 = OFF the Bit3 is invalid.
29 ETH
Dip-switch
4 bits
Bit4 the configuration of ALS function.
Bit4 = OFF, ALS function is disable.
Bit4 = ON, ALS function is enable.
Table 3-18 RCMS 2811-120FE Front Panel Description 4-SEL Dip-switch
NO. Name Bits Description
Bit1, Bit2 Optical port Auto-negotiation/Force configuration.
Bit1, Bit2 = OFF OFF, Optical port A and B can be chosen automatically.
Bit1, Bit2 = OFF ON, Optical B is chosen.
Bit1, Bit2 = ON X, Optical A is chosen.
Bit3 mask/unmask alarm configuration of idle E1 tributary.
Bit3 = OFF, unmask alarm configuration of idle E1 tributary.
Bit3 = ON, mask alarm configuration of idle E1 tributary.
30 SEL
Dip-switch
4 bits
Bit4 Local/Remote E1 loop-back position configuration.
Bit4 = OFF, E1 remote loop-back.
Bit4 = ON, E1 local loop-back.
Table 3-19 RCMS 2811-120FE Front Panel Description 5-E1 Loop Dip-switch
NO. Name Bits Description