02 Omd902100 Bsc6900 (Go) Hardware System Issue1.01
-
Upload
gorb-viktor -
Category
Documents
-
view
118 -
download
6
Transcript of 02 Omd902100 Bsc6900 (Go) Hardware System Issue1.01
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-0
www.huawei.com
Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
BSC6900 GOHardware System
BSC6900 is an important network element(NE) of Huawei Single RAN solution. Itadopts the industry-leading multiple radio access technologies (RATs), IP transmission mode, and modular design. In addition, it is integrated with the functions of the UMTS RNC and GSM BSC, thus efficiently maintaining the trend of multi-RAT convergence in the mobile network.The BSC6900 can be flexibly configured as a BSC6900 GSM, BSC6900 UMTS, or BSC6900 GU as required in different networks.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-1
Page1Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
ForewordThe BSC6900 is an important network element (NE) of
Huawei Single RAN solution. It adopts the industry-leading
multiple radio access technologies, IP transmission mode,
and modular design. It features high capacity, high
integration, high performance, and low power consumption
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-2
Page2Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
ReferencesBSC6900 Technical Description
BSC6900 Product Description
BSC6900 Hardware Description
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-3
Page3Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
ObjectivesUpon completion of this course, you will be able to:
Understand BSC6900 function and features
Master BSC6900 hardware structure
Detail the signal flows in BSC6900
List the typical hardware configuration of BSC6900
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-4
Page4Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Signal Flow
4. Typical Configuration
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-5
Page5Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Location of the BSC6900The HUAWEI BSC6900 is a new generation GSM BSC
product after BSC6000 and BSC6810
The interfaces between the BSC6900 GSM and each NE in the GSM network are as follows: Um: the interface between the BTS and the MS Abis: the interface between the BSC6900 GSM and the BTS A: the interface between the BSC6900 GSM and the Mobile Switching Center (MSC) or Media Gateway (MGW) Gb: the interface between the BSC6900 GSM and the Serving GPRS Support Node (SGSN) The A, Um, and Gb interfaces are standard interfaces, through which equipment from different vendors can be interconnected. The BSC6900 GSM performs functions such as radio resource management, base station management, power control, and handover control.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-6
Page6Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
High Integration and Low CostSupports 3,072 TRXs in a single cabinet
Supports the simultaneous activation of up to 12,288
PDCHs
Maximum of traffic: 19,500 Erl; BHCA : 5,250,000
The BSC6900 GSM in BM/TC separated mode or A over IP mode supports 3,072 TRXs in a single cabinet. It caters to the mobile network requirements for higher capacity with fewer sites, thus requiring less space in the equipment room and reducing the power consumption. In addition, the BSC6900 GSM supports the simultaneous activation of up to 12,288PDCHs, thus meeting the increasing requirements for packet service growth and saving the cost of packet equipment
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-7
Page7Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Features of the BSC6900 SystemHigh integration and low cost
Easy configuration and convenient maintenance
All-IP platform
Smooth evolution for investment protection
Web-based LMT
The BSC6900 GSM has a small number of board types. In addition to transmission boards, the BSC6900 GSM cabinet accommodates boards such as network switching boards, signaling processing boards, and service processing boards. The simplification of board types reduces the maintenance cost. The interface boards and service boards, not bound together, are flexible in configuration and easy to maintain and expand.
Based on its all-IP platform, the BSC6900 GSM betters the PS service performance.The Abis, A, and Gb interfaces support IP transmission, which provides sufficient bandwidth and saves transmission cost. The IP-based platform and interface meet the trend of flattened network and the requirements for network evolution. The BSC6900 GSM is compatible with the hardware of the BSC6000. Through software loading, the BSC6000 in the existing network can be upgraded to the BSC6900 GSM. The BSC6900 GSM can be upgraded to the BSC6900 GU through addition of the UMTS boards and software upgrade. This facilitates the deployment of a 3G network and protects the investment of the operator.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-8
Page8Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Flexible ConfigurationHardware Configuration
BM/TC Separated Mode
BM/TC Combined Mode
A over IP Mode
In BM/TC combined mode, the BSC is not configured with the TCS. The boards that implement the TC functions are inserted into the slots in the MPS or EPS. With the same capacity, less cabinets and less subracks are required in the BSC, thus increasing the hardware integration.
When the BSC is located in a remote equipment room, it is configured in BM/TC separated mode. The BSC is configured with a separate TCS, which is located in the TCR on the MSC side. Thus, the transmission resources between the BSC and the MSC are saved.
In A over IP mode, the BSC directly connects to the Huawei core network without using the TC, thus protecting the operator's investment and improving the voice quality due to the reduction of encoding and decoding. The A over IP mode meets the needs for network evolution.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-9
Page9Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
BSC6900 Evolution Paths
SW upgrade with Legacy HW + New HW (necessary)
SW upgrade with Legacy HW + New HW (optional)
200920082006GBSS8.1/RAN10 GBSS9.0/RAN11 GBSS12.0/RAN12
BSC6000
BSC6810
BSC6900 GSM Only
BSC6900 UMTS Only
BSC6900 Dual mode
BSC6900 GSM Only
BSC6900 UMTS Only
BSC6900 Dual mode
SW upgrade with Legacy HW + New HW (optional)
SW upgrade with Legacy HW + New HW (necessary)
The BSC6900 can be flexibly configured as a BSC6900 GSM, BSC6900 UMTS, or BSC6900 GU as requried in different networks. With the support of EDGE+, the BSC6900 GSM can be upgraded to the BSC6900 GU through additon of UMTS boards and software upgrade.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-10
Page10Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
• Smooth evolution from BSC to RNC with software upgrade• Reducing CAPEX by reusing hardware• Dynamic capacity adjustment between 2G&3G
Dual Mode DesignGSM&UMTS co-cabinet
Software Upgrade
RNC
RNC
BSC
BSC
BSC
RNC
RNC
RNC
BSC
GSM&UMTS cabinet
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-11
Page11Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Feature of BSC6900-Co OAM
Unified CME : Simultaneous 2G/3G data configuration, correctness and efficiency guaranteed
Unified WEB LMT for maintenance: 2G/3G Maintenance more easy and intuitionistic
Centralized OMC for GSM&UMTS, unified platform for network construction, 2G/3G network planning, performance evaluation and trouble shooting etc.Simplifying the network architecture, reducing co-ordination and maintenance effort, man power and OPEX Saving
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-12
Page12Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
pTR
AU
pTR
AU
IPUNI-BTS
UNI-BSCCo-transmission
UDP
IP
/
PPP
IP SW
Router
FP FP FP
3G
2G3G
2G
pTR
AU
pTR
AU
FPFPFPUDP
IP
/
PPP
IP SW
Router
Interface board
Feature of BSC6900-Co TRM
With unified transport resource management, bandwidth can be shared by UMTS&GSM.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-13
Page13Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
UMTS
GSM
Voice PS service
Service direction on UMTS/GSM
HeavyLoad
HeavyLoad
HeavyLoad
HeavyLoad
UMTS
GSM
Load control between UMTS/GSM
Load control by inter-RAT HO
3G/2G cell load consideration make traffic load spread in UMTS&GSM evenly, networkusage efficiency improved
3G/2G cell load consideration make it more accurate for the service direction, betterperformance achieved
Huawei Lab Simulation
Feature of BSC6900-Co RRM
The performance improvement value (>23%&1.4%) are based on Huawei simulation result.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-14
Page14Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Signal Flow
4. Typical Configuration
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-15
Page15Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents2. Hardware Structure
2.1 Cabinets
2.2 Subracks
2.3 Boards
2.4 Cables
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-16
Page16Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
BSC6900 Cabinet The BSC6900 uses the standard N68E-22 cabinet
The N68E-22 cabinet is of
two types, the single-door
cabinet and the double-
door cabinet
600mm
2200mm
800mm
600mm
2200mm
800mm
N68E-22 Cabinet (Single-door/Double-door)
•Meets the requirements in ETSI EN300 386 •Meets the requirements in Council directive 89/336/EEC
EMC
-40 V to -57 VInput voltage range
-48 VRated input voltage
•Empty cabinet ≤ 100 kg •Cabinet in full configuration ≤ 300 kg
Weight
46 UHeight of the available space
2,200 mm (height) x 600 mm (width) x 800 mm (depth)Dimensions
SpecificationItem
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-17
Page17Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Components of the Cabinet Based on functions,
cabinets are classified into
the main processing rack
(MPR), extended
processing rack (EPR), and
transcoder rack (TCR)
(6) Rear cable trough
(5) Cable rack
(4) Power distribution box
(3) Air defense frame
(2) Subrack(1) Filler panel
MPROnly one MPR is configured in the BSC6900.EPRThe number of EPRs to be configured depends on the traffic volume, but only one EPR can be configured in the BSC6900. You can also choose not to configure an EPR.TCRThe number of TCRs to be configured depends on the traffic volume and the configuration modes of subracks. Up to two TCRs can be configured in the BSC6900. You can also choose not to configure a TCR.
Three rear cable troughs are configured.Rear Cable Trough
Two air defense frames are configured.Air Defense Frame
The MPR is configured with one main processing subrack (MPS) and depending on the traffic volume, zero to two extended processing subracks (EPSs) or transcodersubracks (TCSs). The EPR is configured with one to three EPSsor TCSs, depending on the traffic volume. The TCR is configured with one to three TCSs, depending on the traffic volume.
Subrack
Only one power distribution box is configured.Power Distribution Box
ConfigurationComponent
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-18
Page18Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Components of the Cabinet
1 EPS
0 MPS
2 EPS
POWER BOX
MPR
4
3 EPS
5
POWER BOX
EPR
7 TCS
6 TCS
8 TCS
POWER BOX
TCR
MPROnly one MPR is configured in the BSC6900.EPRThe number of EPRs to be configured depends on the traffic volume, but only one EPR can be configured in the BSC6900. You can also choose not to configure an EPR.TCRThe number of TCRs to be configured depends on the traffic volume and the configuration modes of subracks. Up to two TCRs can be configured in the BSC6900. You can also choose not to configure a TCR.
Three rear cable troughs are configured.Rear Cable Trough
Two air defense frames are configured.Air Defense Frame
The MPR is configured with one main processing subrack (MPS) and depending on the traffic volume, zero to two extended processing subracks (EPSs) or transcodersubracks (TCSs). The EPR is configured with one to three EPSsor TCSs, depending on the traffic volume. The TCR is configured with one to three TCSs, depending on the traffic volume.
Subrack
Only one power distribution box is configured.Power Distribution Box
ConfigurationComponent
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-19
Page19Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Power Distribution Box
subrack1
subrack0
subrack2
POWER BOX
subrack0
(3) Label for power distribution
switches
(2) Power distribution
switches
(1)
PAMU
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-20
Page20Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents2. Hardware Structure
2.1 Cabinets
2.2 Subracks
2.3 Boards
2.4 Cables
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-21
Page21Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Subrack
(9) Cover plate of the DIP switch
(8) Port for the monitoring signal cable of the power distribution box
(7) DC power input port
(6) Grounding screw(5) Boards(4) Front
cable trough
(3) Guide rail(2) Mounting ear(1) Fan box
500mm
436mm
12U
The main components of the subrack are the fan box, slots, front cable trough, and backplane.Specification:
In compliance with the IEC60297 standard, each subrack is 19 inches in width and 12 U in height.
1U=44.45mm=1.75inch.Weight of Empty subrack: 25 kg; Weight of subrack configured with boards: ≤ 57 kg
The DIP switch with 8 bits on the subrack is used to set the number of the subrack.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-22
Page22Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Dip Switch on the Subrack
ONONOFFONOFFOFFONON
001015
ONONOFFONONOFFONOFF
001004
ONONONOFFOFFOFFONON
000113
ONONONOFFONOFFONOFF
000102
ONONONONOFFOFFONOFF
000011
ON ON ON ON ON OFF ON ON
000000
87654321Bit
Subrack No.
The DIP switch on the subrack has eight bits from 1 to 8
As the DIP switch uses odd parity check, the number of 1s in the eight bits must be an odd number. The method for setting the bits is as follows:
Set bits 1 through 5 and bit 8.Set bit 7 to ON.Check the number of 1s in the bits of the DIP switch.
If the number of 1s is even, set bit 6 to OFF.
If the number of 1s is odd, set bit 6 to ON.
Bit 8 is used to set the startup mode of the SCUa board. The description of this bit is as follows:
When this bit is set to ON, the SCUa board is not in auto-startup mode. In this
case, the SCUa board must be started by the loading from the OMUa board. When this bit is set to OFF, the SCUa board is in auto-startup mode. In this
case, the SCUa board checks the validity of the Flash file before it is started. If the
Flash file is valid, the SCUa board is started by the loading from the Flash memory.Otherwise, the SCUa board is started by the loading from the OMUa board.
Bit 8 is set to OFF for the BSC6900.
8
Reserved, undefined, generally set to ON7
Odd parity check bit6
Bits 1 to 5 are used for setting the subrack number. Bit 1 is the least significant bit. If the bit is set to ON, it indicates 0. If the bit is set to OFF, it indicates 1.1-5
DescriptionBit
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-23
Page23Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Slots in the Subrack
(3) Rear slot
(2) Backplane
(1) Front slot
the boards are installed on both the front and rear sides of
the backplane
Each subrack provides a total of 28 slots. The 14 slots on the front side of the backplane are numbered from 00 to 13, and those on the rear side from 14 to 27.Two neighboring slots, such as slot 00 and slot 01 or slot 02 and slot 03, can be configured as a pair of active/standby slots. A pair of active and standby boards must be installed in a pair of active and standby slots.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-24
Page24Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Main Processing Subrack (MPS)The MPS processes the basic services and performs the
O&M function. In addition, the MPS provides clock for the
system
As the main processing subrack, the MPS is configured in
the MPR. Only one MPS is configured in the BSC6900
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-25
Page25Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Main Processing Subrack (MPS)BSC6900 must have only one MPS
Front Board
Rear Board
Every board in MPS occupies 1 slot except OMU board which occupied 2 lots.In BM/TC combined configuration mode, the MPS must be configured with the OMUaboard, TNUa board, SCUa board, GCUa board, XPUa board, DPUc board, and DPUdboard. The EIUa board, OIUa board, GOUa board, and FG2a/PEUa board are optional boards. The INT board (interface board) can be the PEUa board, EIUa board, OIUa board, FG2a board, or GOUa board
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-26
Page26Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Extended Processing Subrack (EPS)
As the extended processing subrack, the EPS is configured
in the MPR or EPR. It processes the basic services of the
BSC6900
Compared with the MPS, the EPS is not configured with the
GCUa and OMUa
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-27
Page27Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Extended Processing Subrack (EPS)
Front Board
Rear Board
BSC6900 has no EPS or up to 4 EPS for GSM
In BM/TC separated configuration mode, the EPS must be configured with the TNUaboard, SCUa board, XPUa board, and DPUd board. The DPUc board, GOUa board, EIUa/OIUa board, and PEUa/FG2a board are optional boards. In BM/TC combined configuration mode, the EPS must be configured with the TNUaboard, SCUa board, XPUa board, DPUc board, and DPUd board. The EIUa board, OIUa board, and FG2a/PEUa board are optional boards.Note: The INT board (interface board) can be the PEUa board, EIUa board, OIUaboard, FG2a board, or GOUa board.EPS has 14 slots in the front panel and another 14 slots in the back panel.The differences between MPS and EPS follow:
No GCU board,no OMU board in EPS.Slot 0-5 are fixed for the SPU board,slot 6,7 are fixed for SCU,slot 12,13 are fixed for DPU board,slot 20-23 are fixed for OMU board,slot 20-27 are fixed for Interface board
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-28
Page28Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
TransCoder Subrack (TCS)The TCS is the transcoder subrack. In BM/TC separated
configuration mode, the TCS is configured in the MPR, EPR,
or TCR
It performs transcoding, rate adptation, and sub-multiplexing
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-29
Page29Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
TransCoder Subrack (TCS)
Front Board
Rear Board
BSC6900 has up to 4 TCS for GSM
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-30
Page30Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents2. Hardware Structure
2.1 Cabinets
2.2 Subracks
2.3 Boards
2.4 Cables
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-31
Page31Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
BSC6900 Logical Structure
LMT/M2000
Clock Synchronization
Subsystem
Switching Subsystem
Interface Processin
g Subsyste
m
Service Processing Subsystem
OM Subsystem
To BTS
To MSC
To other BSC
To SGSN
Clock (optional)
Besides, the BSC6900 has the power subsystem and environment monitoring subsystem.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-32
Page32Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Switching SubsystemThe switching subsystem performs the following functions
Provides intra-subrack Medium Access Control (MAC)
switching
Provides intra-subrack Time Division Multiplexing (TDM)
switching
Provides switching channels for traffic data
Provides OM channels
Distributes clock signals to the service processing boards
The switching subsystem consists of the SCUa boards, TNUa boards, high-speed backplane channels in each subrack, crossover cables between SCUa boards, and inter-TNUa cables
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-33
Page33Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Switching Subsystem (Cont.)
The switching subsystem consists of two types of logical modules: MAC switching and TDM switching. It show the position of the switching subsystem in the overall structure of the system, with the modules highlighted in apricot.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-34
Page34Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Network Topologies Between Subracks
MAC switching - star topology
One node functions as the center node and it is connected to
each of the other nodes. The communication between the
other nodes must be switched by the center node
TDM switching - mesh topology
There is a connection between every two nodes. When any
node is out of service, the communication between other nodes
is not affected
In the switching subsystem of the BSC6900, the star topology is established among the MAC switching logical modules, and the mesh topology is established among the TDM switching logical modules.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-35
Page35Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
TNUa BoardThe TNUa board performs the following
functions:
Provides 128 k * 128 k TDM switching
Allocates the TDM network resources
The TNUa board provides the TDM switching and serves as the switching center for the CS services of the entire system.
SMB
male
Test the timing signal output TESTOUT
RJ45Receiving the 8 kHz and the 1PPS
timing signals from the
GCUa/GCGa
CLKIN
RJ45Serial port for commissioningCOM
RJ45For inter-subrack connection10/100/1000BASE-
T
TypeFunctionPort Name
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-36
Page36Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
SCUa BoardThe SCUa board performs the following
functions:
Provides the maintenance management
function
Provides configuration and maintenance of a
subrack or of the entire BSC6900
Monitors the power supply, fans, and
environment of the cabinet
Enables inter-subrack connections
The SCUa board provides the maintenance management and GE switching platform for the subrack in which it is located. Thus, the BSC6900 internal MAC switching is implemented and the internal switching in turn enables complete connection between all modules of the BSC6900.
SMB
male
Test the timing signal output TESTOUT
RJ45Receiving the 8 kHz and the 1PPS
timing signals from the
GCUa/GCGa
CLKIN
RJ45Serial port for commissioningCOM
RJ45For inter-subrack connection10/100/1000BASE-
T
TypeFunctionPort Name
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-37
Page37Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Service Processing SubsystemThe service processing subsystem performs the following
functions
Radio resource management and control
Radio access management
Cell broadcast service control
CS service processing
PS service processing
Service processing subsystems can be increased as required according to the linear superposition principle. Thus, the service processing capability of the BSC6900 is expanded.Service processing subsystems communicate with each other through the switching subsystem to form a resource pool and perform tasks cooperatively.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-38
Page38Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Service Processing Subsystem
The service processing subsystem mainly consists of two logical modules: BSC control plane (CP) and BSC user plane (UP). Figure shows the position of the service processing subsystem in the overall structure of the system, with the modules highlighted in apricot
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-39
Page39Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
XPUa BoardThe XPUa board performs the following
functions:
Main Processing Unit (MPU): manage
the user panel resources, signaling
panel resources, and the DSP status of
the subrack
Signaling Processing Unit (SPU):
process the signaling
RJ45
10M/100M/1000M Ethernet ports
10/100/1000BASE-T0
to 10/100/1000BASE-
T3
TypeFunctionPort Name
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-40
Page40Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
DPUc BoardThe DPUc board performs the following functions:
Provides the speech format conversion and data forwarding
functions
Encodes and decodes voice services
Provides the Tandem Free Operation (TFO) function
Provides the voice enhancement function
Detects voice faults automatically
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-41
Page41Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
DPUd BoardThe DPUd board performs the following functions:
Processes the PS services on up to 1,024 simultaneously
active PDCHs where signals are coded in MCS9
Processes packet links
Detects packet faults automatically
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-42
Page42Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Clock Synchronization Subsystem
INT
INT
SCUa
INT
INT
SCUa
SCUa
GCUa
Clock module
MPS
8kHz
To BTSEPS EPS8KHz
19.44MHz, 32.768MHz,8kHz
Clock cableHigh-speed backplane channel
CN BITS GPS
To BTS
To BTS
19.44MHz, 32.768MHz,8kHz
19.44MHz, 32.768MHz,8kHz
The clock synchronization subsystem can provide the following clock sources: Building Integrated Timing Supply System (BITS) clock, Global Positioning System (GPS) clock, LINE clock, and external 8 kHz clock. It ensures the reliability of the clock signals. The BSC6900 provides reference clock sources for base stations. Clock signals are transmitted from the BSC6900 to base stations over the Iub interface. The clock synchronization subsystem provides clock signals for the BSC6900, generates the RNC Frame Number (RFN), and provides reference clock signals for base stations. The position of the clock synchronization subsystem in the overall structure of the system.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-43
Page43Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
GCUa BoardThe GCUa board performs the following functions:
Traces, generates, and maintains the synchronization
clock
The standby GCUa board traces the clock phase of the
active GCUa board. This ensures the smooth output of
the clock phase in the case of active/standby switchover
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-44
Page44Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Interface Processing SubsystemInterface board category
GOUaGE
POUcSTM-1Optical port
PEUaE1
FG2cFE/GEElectrical port
IP
OIUaOptical port
EIUaElectrical portTDM
INT
BoardPort TypeTransport Mode
Board Type
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-45
Page45Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
EIUa BoardThe EIUa board performs the following functions:
Transmits, receives, encodes, and decodes 32 E1s/T1s
Processes signals according to the LAPD protocol, SS7
MTP2 protocol
Provides the Tributary Protect Switch (TPS) function
between the active and standby EIUa boards
Provides the OM links when the TCS is configured on
the MSC side
Supporting the A, Abis, and Ater interfaces
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-46
Page46Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
OIUa BoardThe OIUa board performs the following functions:
Provides one STM-1 port for TDM transmission with the
rate of 155.52 Mbit/s
Processes signals according to the LAPD protocol, SS7
MTP2 protocol
Provides the Automatic Protection Switching (APS)
function between the active and standby OIUa boards
Provides the OM links when the TCS is configured on
the MSC side
Supports the A, Abis, and Ater interfaces
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-47
Page47Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
FG2c BoardThe FG2c board performs the following
functions:
Provides 12 channels over FE ports or four
channels over GE electrical ports
Provides the routing-based backup and load
sharing
Supports the Abis, A, and Gb interfaces
10M/100M/1000M
10M/100M
As an interface board, the FG2c board supports IP over Ethernet transmission
SMB male connector
Not used in RNC2M0 and 2M1
RJ4510M/100M/1000M Ethernet ports, used to transmit 10/100/1000M signals
10/100/1000BASE-T
RJ4510M/100M Ethernet ports, used to transmit 10/100M signals
10/100BASE-T
Connector TypeFunctionPort
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-48
Page48Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
PEUa BoardThe PEUa board performs the following functions:
Provides 32 channels of E1s/T1s for HDLC transmission
Provides the Tributary Protect Switch (TPS) function
between the active and standby PEUa boards
Transmits, receives, encodes, and decodes 32 channels
of E1s/T1s. The E1 transmission rate is 2.048 Mbit/s; the
T1 transmission rate is 1.544 Mbit/s.
Supports the Abis and Gb interfaces
Ports on the PEUa Board
SMB male Output ports for clock signals. These ports are used to transmit the 2 MHz line clock signals to the GCUa/GCGa board. The clock signals are extracted from upper-level devices and serve as the clock sources of the BSC6900 system.
2M0 and 2M1
DB44E1/T1 port, used to transmit and receive E1/T1 signals on channels 24-31
E1/T1 (24-31)
DB44E1/T1 port, used to transmit and receive E1/T1 signals on channels 16-23
E1/T1 (16-23)
DB44E1/T1 port, used to transmit and receive E1/T1 signals on channels 8-15
E1/T1 (8-15)
DB44E1/T1 port, used to transmit and receive E1/T1 signals on channels 0-7
E1/T1 (0-7)
Connector Type
FunctionPort
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-49
Page49Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
POUc Board The POUc board performs the following functions:
Provides four channels over channelized optical STM-
1/OC-3 ports based on IP protocol
Supports the PPP function
Extracts line clock signals
Provides the Automatic Protection Switching (APS)
function between the active and standby POUc boards
Supports the A, Abis, Gb, Ater interfaces
Ports on the POUc Board
SMB male connector
Output ports for clock signals. These ports are used to transmit the 2 MHz line clock signals to the GCUa/GCGa board. The clock signals are extracted from upper-level devices and serve as the clock sources of the BSC6900 system.
2M0 and 2M1
TX
LC/PCOptical port, used to transmit and receive optical signals. TX refers to the transmitting optical port, and RX refers to the receiving optical port.
RX
Connector Type
FunctionPort
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-50
Page50Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
GOUc Board The GOUc board performs the following functions:
Provides four channels over GE optical ports
Provides the routing-based backup and load sharing
Extracts line clock signals
Supports the Abis, A, and Gb interfaces
Ports on the GOUc board
SMB male connector
Not used in RNC2M0 and 2M1
TX
LC/PCOptical port, used to transmit and receive optical signals. TX refers to the transmitting optical port, and RX refers to the receiving optical port.
RX
Connector TypeFunctionPort
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-51
Page51Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
OM Subsystem
SCUa
SCUa
HUB
OMUa
OMUa
SCUa
SCUa
Alarm box LMT
External network
MPS
To M2000
Internal network
EPS
Internet cable
serial cable
The OM subsystem enables the management and maintenance of the BSC6900 in the following scenarios: routine maintenance, emergency maintenance, upgrade, and capacity expansion
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-52
Page52Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
OMUa BoardOMUa board is the Back Administration Module
(BAM) of the BSC6900, it performs the following
functions :
Configuration management, performance
management, fault management, security
management, and loading management functions
for the system
Providing with the operation and maintenance
interface for the LMT/M2000 users
Ports on the OMUa Board
(18) Screws for fixing the hard disk
(17) Hard disks
(16) OFFLINE LED
(15) HD LEDs(14) VGA port (13) COM port
(12) ETH2 Ethernet port
(11) ETH1 Ethernet port
(10) ETH0 Ethernet port
(9) USB port
(8) SHUTDOWN Button
(7) RESET Button (6) ACT LED (5) ALM LED
(4) RUN LED (3) Self-locking latch
(2) Ejector lever (1) Captive screw
Monitor portVGA
DB-9Serial port. This port is used for system commissioning or for common serial port usage.
COM-ALM/COM-BMC
RJ45GE ports.ETH0 to ETH2
USB ports. These ports are used to connect USB devices.
USB0-1 and USB2-3
Connector Type
FunctionPort
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-53
Page53Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents2. Hardware Structure
2.1 Cabinets
2.2 Subracks
2.3 Boards
2.4 Cables
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-54
Page54Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Main Cables
Trunk Cables
75Ω coaxial cable and Active/Standby 75-ohm coaxial cable
120Ω twisted pair cable and Active/Standby 120Ω twisted pair
cable
Network cables
Optical Fibers
Y-Shaped Clock Cable
PDB Monitoring Signal Cable
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-55
Page55Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Trunk Cables75-ohm Coaxial Cable /120-ohm Twisted Pair Cable
(4) Metal case of the DB44 connector(3) Label (Identifying a coaxial cable/twisted pair cable)
(2) Main label (Identifying the code, version, and manufacturer information of the cable)
(1) DB44 connector
The 75-ohm coaxial cable is a type of trunk cable. It is optional. The number of 75-ohm coaxial cables to be installed depends on site requirements. This cable connects the active/standby AEUa/PEUa board to the Digital Distribution Frame (DDF) or other NEs and transmits E1 trunk signals.The 75-ohm coaxial cable used in the BSC6900 has 2 x 8 cores. That is, the 75-ohm coaxial cable is composed of two cables, each of which contains eight micro coaxial cables. All of the 16 micro coaxial cables form eight E1 RX/TX links.The 75-ohm coaxial cable has a DB44 connector at only one end. You need to make a connector at the other end as required on site. The 120-ohm twisted pair cable is a type of trunk cable. It is optional. The number of 120-ohm twisted pair cables to be installed depends on site requirements. This cable connects the active/standby AEUa/PEUa board to the DDF or other NEs and transmits E1 signals. The 120-ohm twisted pair cable has a DB44 connector at only one end. You need to make a connector at the other end as required on site.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-56
Page56Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Trunk Cables (Cont.)Active/Standby 75-ohm Coaxial Cable
(4) Main label (identifying the code, version, and
manufacturer information of the cable)
(3) Label (Identifying a coaxial cable)
(5) Label 2
(identifying a coaxial
cable)
(2) Metal case of the DB44 connector(1) DB44 connector
The active/standby 75-ohm coaxial cable has two DB44 connectors at only one end. You need to make connectors at the other end as required on site.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-57
Page57Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Trunk Cables (Cont.)Active/Standby 120-ohm Twisted Pair Cable
(4) Main label (identifying the code, version, and
manufacturer information of the cable)
(3) Label 1 (identifying a twisted pair cable)
(5) Label 2
(identifying a twisted
pair cable)
(2) Metal case of the DB44 connector(1) DB44 connector
The 120-ohm twisted pair cable has a DB44 connector at only one end. You need to make a connector at the other end as required on site.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-58
Page58Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Ethernet CableStraight-Through Cable
The straight-through cable is of two types: the shielded straight-through cable and the unshielded straight-through cable.
The unshielded straight-through cable is used to connect the SCUa boards in different subracks.
The shielded straight-through cable is used to connect the FG2a/OMUa/FG2c board to other devices. The number of straight-through cables to be installed depends on the site requirements.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-59
Page59Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Optical CablesOptical cables are used to connect the optical interface
board to the Optical Distribution Frame (ODF) or other NEs.
The optical cable has an LC/PC connector at one end connected to the optical interface board in the BSC6900. The other end of the optical cable can use an LC/PC connector, SC/PC connector, or FC/PC connector.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-60
Page60Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Y-Shaped Clock CableThis cable transmits the 8 kHz
clock signals from the
GCUa/GCGa board in the MPS
to the SCUa board in the EPS.
(2) RJ45 connector (1) Label (identifying a pair of
twisted pair cables)
When the straight-through cable is used to connect the SCUa boards of different subracks, the two ends of the cable are connected to the SCUa boards which are located in different subracks.When the straight-through cable is used to connect the OMUa board to the LAN of the customer, the RJ45 connector at one end of the cable is connected to the ETH0 or the ETH1 port on the OMUa board, and the RJ45 connector at the other end of the cable is connected to the Ethernet port of the LAN of the customer.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-61
Page61Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
PDB Monitoring Signal Cable The power distribution box (PDB) monitoring signal cable is
used to transmit monitoring signals from the PDB to the
subracks.
The DB15 connector at one end of the PDB monitoring signal cable is connected to the port on the PDB for the service subrack. The DB9 connector at the other end of the cable is connected to the MONITOR port on the metal shielding board of the lowest subrack in the cabinet.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-62
Page62Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
QuestionsHow many subsystems does BSC6900 have? And what are
they?
How to set the dip switches for MPS?
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-63
Page63Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Signal Flow
4. Typical Configuration
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-64
Page64Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
BSC6900 Signal FlowsUser-Plane Signal Flow
GSM CS Signal Flow
GSM PS Signal Flow
Control-Plane Signal Flow
Signaling Flow on the A Interface
Signaling Flow on the Abis Interface
Signaling Flow on the Gb Interface
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-65
Page65Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
GSM CS Signal Flow Abis over TDM and A over TDM
the CS signal flow on the uplink is as follows: The uplink CS signals are sent from the BTS to the Abis interface board in the MPS/EPS. The CS signals are demultiplexed in the Abis interface board. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the Ater interface board through the TNUa board. The CS signals are multiplexed in the Ater interface board. Each full-rate CS signal uses a 16 kbit/s sub-timeslot, and each half-rate CS signal uses an 8 kbit/s sub-timeslot. The CS signals are then transmitted to the Ater interface board in the TCS over the Ater interface. The CS signals are demultiplexed in the Ater interface board of the TCS. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the DPUc board through the TNUa board. The DPUc board performs speech codec and rate adaptation on the CS signals, which are converted into 64 kbit/s PCM signals. The 64 kbit/s PCM signals are transmitted to the A interface board through the TNUa board and then to the MSC over the A interface.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-66
Page66Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
GSM CS Signal Flow Abis over HDLC/IP and A over TDM
the CS signal flow on the uplink is as follows: The uplink CS signals are sent from the BTS to the Abis interface board in the MPS/EPS. The CS signals are transmitted from the Abis interface board to the DPUcboard through the SCUa board. The DPUc board reorders PTRAU frames, eliminates jitter, and converts PTRAU frames into TRAU frames. Then, the TRAU frames are transmitted to the Ater interface board through the TNUa board. The CS signals are multiplexed in the Ater interface board in the MPS/EPS, and then are transmitted to the Ater interface board in the TCS. The CS signals are demultiplexed in the Ater interface board of the TCS. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the DPUc board through the TNUa board. The DPUc board performs speech codec and rate adaptation on the CS signals, which are converted into 64 kbit/s PCM signals. The 64 kbit/s PCM signals are transmitted to the A interface board through the TNUa board and then to the MSC over the A interface.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-67
Page67Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
GSM CS Signal Flow Abis over HDLC/IP and A over IP
the CS signal flow on the uplink is as follows: The uplink CS signals are sent from the BTS to the Abis interface board in the MPS/EPS. The Abis interface board encapsulates the CS signals in PTRAU frames, which are then transmitted to the DPUc board through the SCUa board. The DPUc board converts PTRAU frames into RTP frames, reorders RTP frames, and eliminates jitter. The SCUa board transmits the CS signals to the A interface board, and then the A interface board transmits the signals to the MGW over the A interface.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-68
Page68Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
GSM PS Signal Flow Abis over TDM
the PS signal flow on the uplink is as follows: The packet data is sent from the BTS to the Abis interface board in the MPS/EPS. The data uses one to four 16 kbit/s sub-timeslots on the Abisinterface, depending on the modulation and coding scheme, for example, CS1-CS4 or MCS1-MCS9. The Abis interface board transmits the packet data to the TNUa board, which then transmits the data to the DPUd board. The DPUd board converts the frame format and then transmits the data to the Gb interface board through the SCUa board. The Gb interface board processes the packet data according to the IP or FR protocol and then transmits it to the SGSN over the Gb interface.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-69
Page69Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Signaling Flow on the A Interface A over TDM
the uplink signaling flow on the A interface is as follows: In the MPS/EPS, the signaling processing board processes the signaling according to the MTP3, SCCP, and BSSAP protocols. Then, the signaling is transmitted to the Ater interface board through the SCUa board. The Ater interface board processes the signaling according to the MTP2 protocol. Then, the signaling is transmitted to the Ater interface board in the TCS. In the TCS, the Ater interface board transparently transmits the signaling to the TNUa board and then to the A interface board. Then, the signaling istransmitted to the MSC over the A interface.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-70
Page70Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Signaling Flow on the A Interface A over IP
the uplink signaling flow on the A interface is as follows: In the MPS/EPS, the signaling processing board processes the signaling according to the BSSAP, SCCP, SCTP, and M3UA protocols. Then, the signaling is transmitted to the A interface board through the SCUa board. The A interface board processes the signaling according to the IP protocol. Then, the signaling is transmitted to the MSC server through the MGW.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-71
Page71Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Signaling Flow on the Abis Interface
Abis over TDM/IP/HDLC
the uplink signaling flow on the Abis interface is as follows: The signaling is transmitted to the Abis interface board in the MPS/EPS over the Abis interface and then transmitted to the SCUa board. The SCUa board transmits the signaling to the signaling processing board.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-72
Page72Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Signaling Flow on the Gb Interface Gb over IP/HDLC
the uplink signaling flow on the Gb interface is as follows: In the MPS/EPS, the signaling processing board processes the signaling according to the NS and BSSGP protocols. Then, the signaling is transmitted to the Gb interface board through the SCUa board. The Gb interface board processes the signaling according to the IP or FR protocol. Then, the signaling is transmitted to the SGSN over the Gb interface.
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-73
Page73Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Signal Flow
4. Typical Configuration
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-74
Page74Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Typical Configuration of BSC6900
2Number of cabinets
395
3072
768
4875
1312
1MPS+1TC
S
Gb interface throughput
(Mbps)
Number of active PDCHs
(MCS-9)
TRX number
Traffic(Erl)
BHCA(K)
Index
When the R11 boards are configured
TCSMPS
MPR TCR
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-75
Page75Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Typical Configuration of BSC6900
2Number of cabinets
790
7680
1920
12187
3281
1MPS+1EPS+2TC
Ss
Gb interface throughput
(Mbps)
Number of active PDCHs
(MCS-9)
TRX number
Traffic(Erl)
BHCA(K)
Index
When the R11 boards are configured
TCSMPS
MPR TCR
EPS TCS
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-76
Page76Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Typical Configuration of BSC6900
790
12288
3072
19500
5250
2
1MPS+2EPSs+2TC
SsNumber of cabinets
Gb interface throughput
(Mbps)
Number of active PDCHs
(MCS-9)
TRX number
Traffic(Erl)
BHCA(K)
Index
When the R11 boards are configured
TCSMPS
MPR TCR
EPS TCS
EPS
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-77
Page77Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
SummaryAfter this course, we have learned the position of BSC6900
in GSM network, and the specifications of cabinets,
subracks, boards, cables, functions of subsystems, signal
flows of control-plane and user-plane of each interfaces. At
last, we learned typical configuration of BSC6900
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-78
Page78Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Glossary EPS: Extended Processing Subrack
MPS: Main Processing Subrack
TCS: TransCoder Subrack
LMT: Local Maintenance Terminal
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-79
Thank youwww.huawei.com
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-80
Page80Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Appendix 1: Training Icons
Foreword Objectives Contents Question Summary Reference
Course Name
Confidential Information of Huawei. No Spreading Without Permission
P-81
Page81Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
Color UsageColor Usage Guidelines:
The following colors are corporate colors and supporting colors . Wit both usage of colors creates an harmonies effect.The value of the colors should not be changed. No other colors should be used. Only the suggested colors can be used. For the usage of the supporting colors, only vertical and horizontal should be used thus able to reflex the harmony.
Color platelet:Corporate Colors
Supporting Colors
RGB:153/0/0 RGB:0/0/0 RGB:51/51/51 RGB:153/153/153 RGB:204204 RGB:255/255/255
RGB:255/204/102 RGB:255/204/153 RGB:204/255/153 RGB:204/204/255 RGB:153/204/255 RGB:153/204/204
RGB:153/102/10 RGB:255/153/0 RGB:102/153/0 RGB:0/102/153 RGB:0/153/204 RGB:0/153/153