BSC6900 Site Survey Design Guide-20110520-B-V1.3

BSC6900 Site Survey Design Guide Internal

BOM Product Name BSC6900

Intended User survey engineers Product Version BSC6900V900R011/R12/R13 GO/GU/UO

Editing Department

Wireless Product Service Department Document Version V1.3

BSC6900 Site Survey Design Guide

Prepared by SRAN SPDT Team Date 2011-1-5

Reviewed by Date

Reviewed by Date

Approved by Date

Huawei Technologies Co., Ltd.2011-1-5

2023-4-7 Huawei Technologies Proprietary


Revision History

Date Revision Version Description Author

2009-9-23 V1.0 Initial version Xu Lanxiang, Gao Peng

2009-11-16 V1.1

Add the introduction to the survey of Y-shaped clock signal cable, TNU cable and network cables in the scenario of establish a new RNC and capacity expansion.

Gao Peng

2010-7-1 V1.2 Explain the survey requirement of the window of the feeder. Wei Lei

2011-5-20 V1.3 Add the introduction to the survey of optical Splitter and SCUb interconnection cables. Gao Peng



Table of Contents

Chapter 1 Product Description.......................................................................................................11.1 Application Version..............................................................................................................11.2 Product Overview.................................................................................................................11.3 Product structure Introduction..............................................................................................2

1.3.1 Cabinet...................................................................................................................... 21.3.2 Subrack.....................................................................................................................61.3.3 Boards....................................................................................................................... 7

1.4 Configurations.................................................................................................................... 111.4.1 Overview.................................................................................................................. 111.4.2 Hardware Configuration Specifications in BM/TC Combined Mode.........................121.4.3 Hardware Configuration Specifications in BM/TC Separated Mode.........................131.4.4 Hardware Configuration Specifications in A over IP Mode......................................14

Chapter 2 Survey Procedure........................................................................................................162.1 Survey Preparation............................................................................................................16

2.1.1 Getting Engineering Information..............................................................................162.1.2 Preparing Documents..............................................................................................162.1.3 Preparing Tools and Instruments.............................................................................16

2.2 Survey Coordination Meeting.............................................................................................162.3 Principles of Site Survey....................................................................................................172.4 Installation Environment Check..........................................................................................172.5 Filling Out Survey Report...................................................................................................172.6 Reviewing Survey Report...................................................................................................172.7 Filing Documents...............................................................................................................17

Chapter 3 Filling Out Survey Report............................................................................................193.1 Cover.................................................................................................................................. 193.2 Common Office Information...............................................................................................19

3.2.1 Global Project Catalog.............................................................................................193.2.2 Cabinet Layout.........................................................................................................203.2.3 Survey of Common Materials...................................................................................21

3.3 BSC6900 Survey................................................................................................................213.3.1 Equipment Room Environment Survey....................................................................213.3.2 Power Distribution Cable Survey.............................................................................233.3.3 LSZH Cables Requirement......................................................................................233.3.4 Trunk Cable Survey.................................................................................................243.3.5 Description of the Straight-Through Cables on the Ater Interface............................263.3.6 Optical Fiber Survey................................................................................................273.3.7 Optical Splitter Survey.............................................................................................293.3.8 Network Cable Survey.............................................................................................323.3.9 SFP+ High-Speed Cables Survey...........................................................................343.3.10 Corrugated PVC Tube/PVC Trough Survey...........................................................363.3.11 Surveying Inter-TNU Cables..................................................................................363.3.12 Clock Cable Survey...............................................................................................413.3.13 GPS Antenna Feeder Survey................................................................................443.3.14 Alarm Box Cable Survey........................................................................................453.3.15 Survey of LMT.......................................................................................................46

3.4 Appendix 1 Site Survey Memo (Optional)..........................................................................473.5 Appendix 2 Installation Environment Checklist...................................................................473.6 Appendix 3 Equipment Room Picture (Optional)................................................................48



Chapter 4 Reference...................................................................................................................... 49



List of Figures

Figure 1-1 Position of the BSC6900 GU in the network...........................................................1

Figure 1-2 BSC6900 GU..........................................................................................................2

Figure 1-3 Cabinet layout requirements...................................................................................3

Figure 1-4 Components of the cabinet.....................................................................................4

Figure 1-5 Structure of the subrack..........................................................................................7

Figure 1-6 Structure of the subrack..........................................................................................7

Figure 3-1 Cabinet layout requirements.................................................................................20

Figure 3-2 Height of antistatic floor........................................................................................22

Figure 3-3 Position of installing rack......................................................................................22

Figure 3-4 –48V power cable/GND cable of BSC..................................................................23

Figure 3-5 Outline of E1 75Ω coaxial cable............................................................................24

Figure 3-6 Outline of E1 75Ω coaxial cable (Y-Shaped).........................................................24

Figure 3-7 Outline of E1 120Ω twisted pair cable...................................................................25

Figure 3-8 Outline of E1 120Ω twisted pair cable (Y-Shaped)................................................25

Figure 3-9 Calculating required trunk cable length for overhead cabling...............................26

Figure 3-10 Calculating required trunk cable length for underfloor cabling............................26

Figure 3-11 Straight-through cables on the Ater interface (upward cabling)...........................27

Figure 3-12 Straight-through cables on the Ater interface (downward cabling)......................27

Figure 3-13 Outline of LC/PC-LC/PC-single-mode/multi-mode optical fiber...........................28

Figure 3-14 Figure 4-10 Outline of LC/PC-FC/PC-single-mode/multi-mode optical fiber.......28

Figure 3-15 Outline of LC/PC-SC/PC-single-mode optical fiber.............................................28

Figure 3-16 Optical Splitter....................................................................................................29

Figure 3-17 Operating principle for an optical combiner.........................................................30

Figure 3-18 Operating principle for an optical splitter.............................................................30

Figure 3-19 Position for installing an optical splitter...............................................................31

Figure 3-20 Position for installing optical fibers for an optical splitter.....................................31

Figure 3-21 Outline of shielded network cable.......................................................................32

Figure 3-22 Outline of unshielded network cable...................................................................32

Figure 3-23 Connecting SCUa boards in MPS and those in an EPS through crossover Ethernet cables...............................................................................................................33

Figure 3-24 Position of crossover Ethernet cables between SCUa boards in BSC6900........34

Figure 3-25 Position of SFP+ high-speed cables between SCUb boards in BSC6900..........35

Figure 3-26 Position of SFP+ high-speed cables between SCUb boards in multi cabinets....36

Figure 3-27 Appearance of Inter-TNU Cables........................................................................37

Figure 3-28 Installation position of the Inter-TNU Cables.......................................................38

Figure 3-29 Inter-TNU Cables of 2.2 m..................................................................................39



Figure 3-32 Outline of a Y-shaped clock cable.......................................................................42



Figure 3-33 Connecting GCUa/GCGa boards in MPS and SCUa boards in an EPS through Y-shaped clock cables........................................................................................................42

Figure 3-34 Lengths of Y-shaped clock cables.......................................................................43

Figure 3-35 Installing 7/8" or 5/4" feeder................................................................................44

Figure 3-36 Installing 1/2" feeder...........................................................................................45

Figure 3-37 Outline of alarm signal cable...............................................................................45



List of Tables

Table 1-1 Components of the cabinet.......................................................................................5

Table 1-2 Technical specifications of the BSC6900 cabinet (N68E-22)....................................5

Table 1-3 Classification of BSC6900 GU subracks...................................................................6

Table 1-4 Classification of BSC6900 GU boards......................................................................7

Table 1-5 Configuration modes of the BSC6900 GU..............................................................11

Table 1-6 Typical configuration specifications of a single BSC6900 GU subrack (1)..............12




Table 1-10 Typical configuration specifications of a single BSC6900 GU subrack (5)............14

Table 1-11 Typical configuration specifications of a single BSC6900 GU subrack (6)............14

Table 3-1 Items in global project catalog................................................................................19

Table 3-2 The optical power and the receive sensitivity of the optical module in the BSC......30

Table 3-3 Quantity of TNU cables between the MPS subrack and the EPS subrack..............40

Table 3-4 Quantity of TNU cables between the TC subracks.................................................41

Table 3-5 Quantity of Y-shaped clock cables..........................................................................43

Table 3-6 Available types of feeders.......................................................................................44



About This DocumentBSC6900 Site Survey Design Guide is to guide site survey prior to new deployment, expansion, and reconstruction of Huawei's products. Geared to the features and the survey design specifications, it provides some reference for you site survey engineers. Such reference includes the survey methods and requirements, the survey items involved in a survey report and the product acknowledge and information associated with site survey. This guide will enable the new employees and you site survey engineers to quickly learn the site survey contents and acknowledge for the BSC6900. It will improve your site survey skills so that you can finish a site survey project efficiently, rapidly and completely.



Chapter 1 Product Description

1.1 Application Version

BSC6900 Site Survey Design Guide applies to Huawei's Radio Network Controller BSC6900V900R011 products. It is to guide site survey prior to new deployment, expansion and reconstruction of those products.

1.2 Product Overview

The BSC6900 is an important network element (NE) of Huawei SingleRAN solution. It adopts 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. The BSC6900 in independent mode refers to the BSC6900 GSM or the BSC6900 UMTS whereas the BSC6900 in integrated mode refers to the BSC6900 GU.The BSC6900 GU operates as an independent NE to access the GSM&UMTS network and integrates the functions of the GSM BSC and the UMTS RNC. When the BSC6900 GU accesses the GSM network, the 3GPP R6 applies; when the BSC6900 GU accesses the UMTS network, the 3GPP R7 applies.The BSC6900 GU connects to the core networks and manages the base stations in the GSM and UMTS networks. Figure 1-1 shows the position of the BSC6900 GU in the network.

Abis

CBC

UE

BSC6900 GU

NodeB

Dual-mode BTS

Iub

CS core network

Iub /Abis

A/Iu-CS

Gb/Iu-PS

Cb/Iu-BCBTSUu/Um

BSC

PS core network

Figure 1-1 Position of the BSC6900 GU in the network

The interfaces between the BSC6900 GU and each NE in the UMTS network are as follows:

Iub: the interface between the BSC6900 GU and the NodeB

Iur: the interface between the BSC6900 GU and the RNC

Iu-CS: the interface between the BSC6900 GU and the Mobile Switching Center (MSC) or Media Gateway (MGW)

Iu-PS: the interface between the BSC6900 GU and the Serving GPRS Support Node (SGSN)

2023-4-7 Huawei Technologies Proprietary 1


Iu-BC: the interface between the BSC6900 GU and the Cell Broadcast Center (CBC)

These interfaces are standard interfaces, through which equipment from different vendors can be interconnected.The interfaces between the BSC6900 GU and each NE in the GSM network are as follows:

Abis: the interface between the BSC6900 GU and the BTS

A: the interface between the BSC6900 GU and the Mobile Switching Center (MSC) or Media Gateway (MGW)

Gb: the interface between the BSC6900 GU and the Serving GPRS Support Node (SGSN)

The A and Gb interfaces are standard interfaces, through which the equipment from different vendors can be interconnected.The BSC6900 GU performs functions such as radio resource management, base station management, power control, and handover control.

1.3 Product structure Introduction

1.3.1 Cabinet

The N68E-22 cabinet is of two types, namely, the single-door cabinet and the double-door cabinet.Figure 1-1 shows the single-door and the double-door cabinet.

Figure 1-1 BSC6900 GU

Reasonably determine the specific positions of cabinets through full consultation with the customer. The front and rear of the cabinets should be no less than 0.8 m away from a wall or other equipment. There should be a no less than 1m wide aisle in the equipment room. Furthermore, a certain area should be reserved as needed for future expansion. See Figure 1-3.



Figure 1-2 Cabinet layout requirements

Based on functions, cabinets are classified into the main processing rack (MPR), extended processing rack (EPR), and transcoder rack (TCR).

MPR: Main Process Rack, only one MPR is configured in the BSC6900.

EPR: Extent Process Rack, the 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 the EPR.

TCR: TransCoder Rack, the 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.

The components of the BSC6900 cabinet that with internal power distribution (PARC) are the power distribution box, subrack, air defence subrack, independent fan subrack, cable rack, rack, and rear cable trough.

Figure 1-4 shows the components of the BSC6900 cabinet.



(1) Air inlet (2) Independent fan subrack (3) Subrack

(4) Air defence subrack (5) Filler panel (6) Power distribution box

(7) Cable rack (8) Rear cable trough

Figure 1-3 Components of the cabinet

Table 1-1 describes the components of the cabinet.



Table 1-1 Components of the cabinet

No. Component Description

1 Air inlet It is used for air intake.

2 Subrack

Subracks are used to house boards and backplanes to form an independent unit.

The MPR is configured with one main processing subrack (MPS). In addition, depending on the traffic volume, it is configured with zero to two extended processing subracks (EPSs) or transcoder subracks (TCSs).

The EPR is configured with one to three EPSs or TCSs, depending on the traffic volume.

The TCR is configured with one to three TCSs, depending on the traffic volume.

3 Air defence subrack It is used to form a Z-shaped air channel, keeping out the air. Two air defence subracks are configured in each cabinet.

4 rear cable trough It is used for routing of cables for boards. Three rear cable troughs are configured in each cabinet.

5 Fiber management tray It is used to coil optical fibers. Four fiber management trays are configured in each cabinet.

The subracks are numbered from bottom to top, and the MPS is numbered 0.

Table 1-2 describes the technical specifications of the BSC6900 cabinet (N68E-22).

Table 1-2 Technical specifications of the BSC6900 cabinet (N68E-22)

Item Specification

Dimensions 2,200 mm (height) x 600 mm (width) x 800 mm (depth)

Height of the available space 46 U (1 U = 44.45 mm = 1.75 inches)

Weight Empty cabinet ≤ 100 kg

Cabinet in full configuration ≤ 320 kg

Rated input voltage -48 V

Input voltage range -40 V to -57 V

EMC Meets the requirements in ETSI EN300 386

Meets the requirements in Council directive 89/336/EEC

1.3.2 Subrack

Subracks are used to house boards and backplanes to form an independent unit.



The BSC6900 GU subracks are classified into main processing subrack (MPS), extended processing subrack (EPS), and transcoder subrack (TCS), as described in Table 1-1.

Table 1-1 Classification of BSC6900 GU subracks

Subrack Quantity Function

MPS 1The MPS performs centralized switching and provides service paths for other subracks. It also provides the service processing interface, OM interface, and system clock interface.

EPS 0-5 The EPS performs the functions of user plane processing and signaling control.

TCS

0-4The TCS is configured only in BM/TC separated mode.

The TCS processes CS services and performs the functions of voice adaptation and code conversion.

In compliance with the IEC60297 standard, each subrack is 19 inches in width and 12 U in height. Figure 1 shows the structure of the subrack.

(1) Fan box (2) Mounting ear (3) Guide rail

(4) Front cable trough

(5) Boards (6) Grounding screw

(7) DC power input port

(8) Port for the monitoring signal cable of the power distribution box

(9) Cover plate of the DIP switch

Figure 1-2 Structure of the subrack



The backplane is positioned in the center of the subrack, and the boards are installed on the front and rear sides of the backplane.Figure 1-6 shows the structure of the subrack.

(1) Front slot (2) Backplane (3) Rear slot

Figure 1-3 Structure of the subrack

1.3.3 Boards

The BSC6900 GU boards can be classified into the OM board, switching processing board, clock processing board, signaling processing board, service processing board, and interface processing board, as described in Table 1-5Error: Reference source not found.

The BSC6900 V900R011 is added with the following new boards: SPUb, XPUb, DPUe, AOUc, FG2c, GOUc, POUc, and UOIc. Other boards are inherited from the BSC6000 R8 and BSC6810 V200R011, and they can be used directly after the BSC6000 or BSC6810 is upgraded to the BSC6900 GU.

Table 1-1 Classification of BSC6900 GU boards

Board Type

Board Name

Function Application Variant

OM board OMUa Performs configuration management, performance management, fault management, security management, and loading management for the BSC6900. Works as the OM bridge of the LMT/M2000 to provide the BSC6900 OM interface for the LMT/M2000 and to enable the communication between the BSC6900 and the LMT/M2000. Works as the interface to provide the web-based online help.

The OMUa board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

OMUc The OMUc board works as a bridge for the communication between the Local Maintenance Terminal (LMT) and the other boards in the BSC6900.

The OMUa board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.



Switching processing board

SCUa Provides MAC/GE switching and enables the convergence of ATM and IP networks. Provides data switching channels. Provides system-level or subrack-level configuration and maintenance. Distributes clock signals for the BSC6900.

The SCUa board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

SCUb 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 Supports the port trunking function Supports the active/standby switchover Enables inter-subrack connections Provides a total switching capacity of 240 Gbit/s Distributes clock signals and RFN signals for the BSC6900

The SCUb board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

TNUa Provides the TDM switching and serves as the center of the circuit switched domain. Assigns the resources of the TDM network and establishes the network connection. Provides the communication processing on the GE port.

The TNUb board is applicable to the BSC6900 GSM and the BSC6900 GU.

Clock processing board

GCUa Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

The GCUa board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

GCGa Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals. Receives and processes the GPS signals.

The GCGa board is applicable to the BSC6900 UMTS and BSC6900 GU.

Signaling processing board

SPUa Manages user plane and signaling plane resources in the subrack and processes signaling.Differences:The SPUa board processes the signaling on the GSM/UMTS signaling plane.

The SPUa board is applicable to the BSC6900 GSM, BSC6900 UMTS and BSC6900 GU.

XPUa The XPUa board processes the signaling on the GSM signaling plane.

The XPUa board is applicable to the BSC6900 GSM and BSC6900 GU.

SPUb Manages user plane and signaling plane resources in the subrack and processes signaling.Differences:The SPUb board processes the signaling on the GSM/UMTS signaling plane. The processing capability of the SPUb board is 75% to 100% higher than that of the SPUa board.

The SPUb board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

XPUb The XPUb board processes the signaling on the GSM signaling plane. The processing capability of the XPUb board is 75% to 100% higher than that

The XPUb board is applicable to the BSC6900 GSM and



of the XPUa board. BSC6900 GU.Service processing board

DPUb Processes CS services and PS services within the system.Differences:The DPUb board processes the services on the UMTS user plane, encodes and decodes the GSM speech services and data services, and converts the speech frame format over the IP speech channel and the speech channel in HDLC transmission optimization.

The DPUb board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

DPUa The DPUa board processes GSM voice services and GSM data services.

The DPUa board is applicable to the BSC6900 GSM and BSC6900 GU.

DPUc The DPUc board encodes and decodes the GSM speech services and converts the speech frame format over the IP speech channel and the speech channel in HDLC transmission optimization.

　The DPUc board is applicable to the BSC6900 GSM and BSC6900 GU.

DPUd The DPUd board processes the GSM data services.Processes CS services and PS services within the system.

The DPUd board is applicable to the BSC6900 GSM and BSC6900 GU.

DPUe The DPUe board processes the services on the UMTS user plane.

The DPUe board is applicable to the BSC6900 UMTS and BSC6900 GU.

DPUf The DPUf board processes GSM voice services and GSM data services.

The DPUf board is applicable to the BSC6900 GSM and BSC6900 GU.

DPUg The DPUg board processes GSM PS services. The DPUf board is applicable to the BSC6900 GSM and BSC6900 GU.

Interface processing board

AEUa Provides 32 channels of ATM over E1s/T1. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The AEUa board is applicable to the BSC6900 UMTS and BSC6900 GU.

AOUa Provides two channels over the channelized optical STM-1/OC-3 ports based on ATM protocols. Supports ATM over E1/T1 over SDH or SONET. Provides 126 E1s or 168 T1s. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The AOUa board is applicable to the BSC6900 UMTS and BSC6900 GU.

EIUa Provides 32 channels over E1/T1 electrical ports. Transmits, receives, encodes, and decodes the 32 E1s/T1s. The E1 transmission rate is 2.048 Mbit/s; the T1 transmission rate is 1.544 Mbit/s.

The EIUa board is applicable to the BSC6900 GSM and BSC6900 GU.



FG2a Provides eight channels over FE electrical ports or two channels over GE electrical ports. Supports IP over FE/GE.

The FG2a board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

GOUa Provides two channels over GE optical ports. Supports IP over GE.

The GOUa board is applicable to the BSC6900 GSM, BSC6900 GU and BSC6900 UMTS.

OIUa Provides one channel over the STM-1 optical port. Provides one channelized STM-1 with the rate of 155.52 Mbit/s.

The OIUa board is applicable to the BSC6900 GSM and BSC6900 GU.

PEUa Provides 32 channels of IP over E1s/T1. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The PEUa board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

POUa Provides two channels over the channelized optical STM-1/OC-3 ports based on IP protocols. Supports IP over E1/T1 over SDH/SONET. Provides the load bearer capability of 126 E1s or 168 T1s. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The POUa board is applicable to the BSC6900 UMTS and BSC6900 GU.

UOIa Provides four channels over the unchannelized STM-1/OC-3c optical ports. Supports ATM/IP over SDH/SONET.

The UOIa board is applicable to the BSC6900 UMTS and BSC6900 GU.

Extracts the clock signals and sends the signals to the GCUa or GCGa board.

AOUc Provides four channels over the channelized optical STM-1/OC-3 ports based on ATM protocols. Supports ATM over E1/T1 over SDH or SONET. Provides 252 E1s or 336 T1s. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The AOUc board is applicable to the BSC6900 UMTS and BSC6900 GU.

FG2c Provides 12 channels over FE electrical ports or 4 channels over GE electrical ports. Supports IP over FE/GE.

The FG2ac board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

GOUc Provides four channels over GE optical ports. Supports IP over GE.

The GOUc board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.



POUc Provides four channels over the channelized optical STM-1/OC-3 ports based on IP/TDM protocols. Supports IP over E1/T1 over SDH/SONET. Provides the load bearer capability of 252 E1s or 336 T1s. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The POUc board is applicable to the BSC6900 GSM, BSC6900 GU, and BSC6900 UMTS.

UOIc Provides eight channels over the unchannelized STM-1/OC-3c optical ports. Supports IP over SDH/SONET. Extracts the clock signals and sends the signals to the GCUa or GCGa board.

The UOIc board is applicable to the BSC6900 GU and BSC6900 UMTS.

1.4 Configurations

1.4.1 Overview

In the BSC6900 GU, the MPS or EPS can be either a GSM subrack or a UMTS subrack.Based on the TCS configuration, the BSC6900 GU supports three types of configuration modes: BM/TC combined, BM/TC separated, and A over IP. The system specifications vary according to the boards configured in the BSC6900 GU.The MPS and EPS are generally called basic module (BM), and the TCS is called transcoder (TC) for short. Table 1-16 describes the configuration modes of the BSC6900 GU based on the TCS configuration.

Table 1-1 Configuration modes of the BSC6900 GU

Configuration Mode Description Characteristic

BM/TC combinedThe 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.

BM/TC separated

This mode is applicable to the scenario where the BSC is configured in a remote equipment room. In this mode, the BSC is configured with a separate TCS, which is placed in the TCR on the MSC side.

The TCS can be configured in the TCR on the MSC side, thus saving the transmission resources between the BSC and the MSC.

A over IP The BSC6900 GU is not configured with a TCS. The TC functions are implemented by the MGW.

The BSC is directly connected to the Huawei core network without a TC, thus reducing the CAPEX of the operator. In addition, the number of speech coding and decoding times is decreased to improve the speech quality. The A over IP mode meets the needs for network evolution.

1.4.2 Hardware Configuration Specifications in BM/TC Combined Mode

Table 1-17 lists the typical typical configuration specifications of a single subrack when the BSC6900 GU in BM/TC combined mode is configured with the BSC6000R8&BSC6810R11 boards.



Table 1-1 Typical configuration specifications of a single BSC6900 GU subrack (1)

Subrack MPS(UMTS) EPS(UMTS) MPS(GSM) EPS(GSM)

Traffic volume (Erl) 7,200 10,800 3,250 4,875

PS (UL + DL) data throughput (Mbit/s) 460 690 NA NA

Number of NodeBs 200 300 NA NA

Number of cells 600 900 700 768

Number of TRXs NA NA 512 768

Number of active PDCHs (MCS-9) NA NA 2,048 3,072

NOTEThe traffic volume is calculated on the basis of Huawei traffic model. The N/A in the table indicates that the data is not available at present.

You can calculate the capacity specifications in any typical subrack combination mode by using the preceding data.

Table 1-28 lists the typical configuration specifications of a single subrack when the BSC6900 GU in BM/TC combined mode is configured with the BSC6900R11 boards.




PS (UL + DL) data throughput (Mbit/s) 1,340 1,340 NA NA


Number of cells 1,200 1,200 512 1,024

Number of TRXs NA NA 512 1,024




1.4.3 Hardware Configuration Specifications in BM/TC Separated Mode

Table 1-19 lists the typical configuration specifications of a single subrack when the BSC6900 GU in BM/TC separated mode is configured with the BSC6000R8&BSC6810R11 boards.














Table 1-210 lists the typical configuration specifications of a single subrack when the BSC6900 GU in BM/TC separated mode is configured with the BSC6900R11 boards.






Number of cells 1,200 1,200 1,024 1,024

Number of TRXs NA NA 1,024 1,024




1.4.4 Hardware Configuration Specifications in A over IP Mode

Table 1-111 lists the typical configuration specifications of a single subrack when the BSC6900 GU in A over IP mode is configured with the BSC6000R8&BSC6810R11 boards.














Table 1-22 lists the typical configuration specifications of a single subrack when the BSC6900 GU in A over IP mode is configured with the R11 boards.






Number of cells 1,200 1,200 1,024 2,048

Number of TRXs NA NA 1,024 2,048






Chapter 2 Survey Procedure

A precise, detailed and worthy survey not only is a solid basis of proper delivery but provides important data and reference for future engineering design/data setting and project construction. It can help reduce the blindness in the engineering, the waste at each step and the costs of the project and thus ensure high project efficiency and quality. After a survey, you can present useful improvement suggestions and solutions to the customer in an active way. You can also actively and effectively attend and observe the pre-work preparation to ensure its sufficiency. Therefore, the quality of the survey procedure is addressed for accurate and effective survey.The survey procedure here refers to the entire procedure from the time of receipt of a survey task to the completion of the survey. It covers making survey preparation, holding a survey coordination meeting, conducting primary installation environment check, filling out the survey report, reviewing the survey report, and filing documents.

2.1 Survey Preparation

An engineering survey usually starts the moment a contract is signed. The Survey Design Section appoints you to make an engineering survey after receiving an Engineering Survey Notification from a project manager. You are then in charge of the engineering survey. Get the relevant engineering information and make full preparation as follows prior to the site survey.

2.1.1 Getting Engineering Information

Contact the product manager and determine whether to hold a survey coordination meeting according to the demand. Get the contract information, engineering schedule and site preparation associated with the project. The contract information includes contract list, project responsibility checklist, networking topology, and technical proposals, including the size, product configuration and responsibility division of the project. The engineering schedule is determined under the negotiation between the project team and the customer geared to the whole project requirements. Design the survey schedule and arrangement in conjunction with the engineering schedule. The Engineering Survey Notification introduces the basic information about the site. Despite of that, confirm the customer's site survey conditions, cooperative engineers and vehicles and some other exceptions to be involved in the survey.

2.1.2 Preparing Documents

Prepare BSC6900 Installation Environment Checklist, BSC6900 Survey Report Template, Site Survey Memo (Template), and Contract Problem Feedback Form (Template). Download the previous engineering documents if the project is for expansion.

2.1.3 Preparing Tools and Instruments

Select tools according to the actual site situation.The common tools include laptop, DC, compass, distance meter, tape measure (4.5 m or above) and other necessary instruments.

2.2 Survey Coordination Meeting

The survey coordination meeting is an opportunity for Huawei's technical engineers to talk face-to-face with the customer's top management. This meeting will give the customer's management a basic, rough



and perceptual vision of the project and win their understanding of and support for the later survey work. At the meeting, confirm the detailed address including the room No., building name and road name of the equipment room and the traffic route to the equipment room with the opposite side. If possible, determine the exact survey time, get an authorization of access to the equipment room, and learn the customer's some other special survey requirements.The form of the coordination meeting varies from project to project. For a general project or if the customer is at a lower level, a small talk is enough. For a vital complicated project or if the customer is at a higher level, a technical conference or a meeting in other kinds is required.

2.3 Principles of Site Survey

The quality of site survey is critical for the entire survey work. Observe the following principles while you make a site survey:

1) Get the necessary site information. Make a preliminary design for the equipment room and draw a preliminary design sketch of the room.

2) The data retrieved through survey will be a basis of engineering design and delivery. Make an effective site communication with the customer to drive the customer to timely complete the pre-work preparation.

3) Be sure to output as elaborate and accurate as possible site survey data.

4) Determine together with the customer where to position equipment, how to route cables and which area to reserve for future expansion. Consult the customer for the involved data, such as the building parameters, the distance between equipment rooms, and the number of available optical fiber cores.

5) Carefully survey and record each item specified in the survey report rather than subjectively guess or assume it by experience.

2.4 Installation Environment Check

Make an installation environment check to ensure the basic equipment installation conditions. Fill out the Installation Environment Checklist. Send a copy of Preparation Guide for the Installation to the customer to guide the customer to make pre-installation preparation.

2.5 Filling Out Survey Report

Complete the site survey report and the installation environment checklist according to the site survey. Fill out the survey memo in any of the following cases:

1) The information of some offices is temporarily hard to determine in this survey.

2) Some supplementary instructions have been agreed on the engineering preparation.

3) You have some other matters to address.

Fill in the Contract Problem Feedback Form in case of any contract problem.

2.6 Reviewing Survey Report

The survey reviewers review the completed survey report and work report. In case of any improperness, they will return a feedback and you need to make modifications as required.



2.7 Filing Documents

The survey reviewers file the final survey report and the other relevant survey documents, including the review records of the survey report.



Chapter 3 Filling Out Survey Report

This chapter describes how to fill out BSC6900 Survey Report. The report contains the same content as listed in the survey report template. Each copy of survey report concerns only one office.BSC6900 Survey Report is an .xls form. It consists of cover, common office information, BSC6900 survey data and appendixes.

3.1 Cover

Fill in the contract business information, the survey report information, the customer information, and the survey party information. Ask the customer's contact person to confirm the customer information in the form of signature.

1) The contract business information includes the customer name, contract No., quotation No., and site name.

2) The survey report information includes the total number of pages in the survey report, the number of pages in the text, and the number of pages in the appendix. For survey and delivery reference, add the names of the offices that feature the same survey items.

3) The customer information includes the name, telephone, fax and email of the contact person on behalf of the customer, the name, detailed address and telephone of the equipment room, and the contact person's signature.

4) The survey party information includes the name, telephone and fax of the representative office, the name, telephone and email of the contact person on behalf of the representative office, the survey date, and the contact person's signature.

Caution:

The name, telephone, fax and email of the contact person on either side are mandatory in the electronic copy of the survey report to return to Huawei HQ. The person in charge of survey design or the product manager in the local office serves as the contact person on Huawei's side.

3.2 Common Office Information

Complete the global project catalog, the cabinet layout, and the survey of common materials.

3.2.1 Global Project Catalog

The global project catalog summarizes the basic information of each office involved in the project. Such information includes office name, original equipment type, new equipment type, quantity, project type, original configuration capacity, new configuration capacity, and survey phase. Table 4-1 lists the items.

Table 3-1 Items in global project catalogItem Description

Country/Region Specify the region Information to guide whether need to deliver the LSZH materials. For Europe Region, LSZH materials are needed. And for North America, LSZH materials are forbidden and need to deliver the anti-seismic Cabinet.

Office name Name of the office to host the equipment. If the office contains multiple equipment rooms, enter the name of each individual equipment room separately.



Equipment type Name and type of the equipment, such as BSC6900.Quantity Quantity of each type of equipment. If there are different types of equipment in an equipment room,

enter the quantity of each individual type of equipment separately.Project type Including three options: new, expansion, and relocationOriginal configuration capacity

Original subrack quantity and trunk capacity (including E1 port quantity and optical port quantity) before expansion

New configuration capacity New subrack quantity and trunk capacity (including E1 port quantity and optical port quantity)Survey phase Including four options: current, next, previous, and --, which respectively indicate that the item is

surveyed in this round, is to be surveyed in the next round, has been surveyed in the previous round, and does not need to be surveyed

3.2.2 Cabinet Layout

The cabinet layout shows the position of the equipment in the floor plan. It helps the subsequent procedures like survey review and configuration to determine whether the survey contents (like side panel and base) are proper and complete.

Submit the equipment room floor layout plan and the cabling diagram as well as the survey report. The survey should be separate for each individual office, and so should the drawing. The drawing should comply with the drawing specifications of the engineering center. The requirements for the switching equipment room floor layout plan apply to the equipment room floor layout plan here. If you have any questions, please feel free to consult Huawei's contact person for site survey.

Reasonably determine the specific positions of cabinets through full consultation with the customer. The front and rear of the cabinets should be no less than 0.8 m away from a wall or other equipment. There should be a no less than 1m wide aisle in the equipment room. Furthermore, a certain area should be reserved as needed for future expansion. See Figure 4-1.

Figure 3-1 Cabinet layout requirements

If there is so large a quantity of equipment that you need to assign it to different rooms, give full consideration to the original cabling and prevent any conflict between the AC and DC power cables. With an eye on future expansion, assign the power supply cabinet as near as possible to the AC unit.

List any condition that has impact on later installation in the remarks area.

Clearly elaborate any matter not covered here as needed.



Warning:

Select the type of the cabinet to deliver first.Identify the new equipment in bold type and the original in italic type.Leave an empty cell between the cabinets that are not closely adjacent to each other and make a remark on the non-adjacency.

3.2.3 Survey of Common Materials

Normally all equipment share one Power Distribution Frame (PDF). If the contract requires Huawei to provide power busbars and PGND cables, make a survey of the power busbars for the PDF. The survey items include the power busbar cross section, the PGND cable cross section, the distance between the PDF and the DC power cabinet, and the distance between the PDF and the PGND bar.Calculate the required power busbar cross section using the following formula:

S=ΣI ·L / (K ·ΔU)Wherein,ΣI: Total current (A) in the conductorL: Length (m) of the conductor loop (distance x 2)ΔU: Voltage drop (V) in the conductor. It is normally 2.5 V.K: Electrical conductivity (K-copper = 57, K-aluminum = 34)Work out the result geared to the actual survey distance and the estimated long-term capacity, and then select appropriate power busbars accordingly.Normally the PGND cable cross section is the same as the power busbar cross connection. If otherwise, make a comment in the remarks area.The power busbars for the PDF are delivered in roll. By default, they include two –48V power cables (blue), two GND cables (black), and one PGND cable (green-and-white). (The PGND cable has a fixed cross section of 120 mm2). The corresponding connectors are also provided.

Warning:

Specify any special requirement for a special cable color or core diameter in the remarks area with a brief explanation.

3.3 BSC6900 Survey

3.3.1 Equipment Room Environment Survey

I. Installation Mode

When the BSC6900 was configured as GO or GU mode, if the TCS is remote must be surveyed. The distance between MPS’s SCU and main TCS’s SCU exceeds 10m, configure the TCS as the remote mode. The remote mode can save the transmission media resources, but the system load time will be longer.Four modes are available to install a cabinet: on an antistatic floor with support; on an antistatic floor without support; on a cement ground, and on other unconventional floors.

Caution:

If the equipment room is being decorated, get all details of the floor design and arrangement to prevent delivery error.

In the case of installation on an antistatic floor, measure the height of the antistatic floor. That is,



indicate the vertical distance between the ground and the upper surface of the antistatic floor. Be sure to measure in person the height at the point where to install the rack. If underfloor cabling is applied, check whether there is any cable or hole adverse to the installation below the cabinet position.

Figure 3-1 Height of antistatic floor

In the case of installation on a cement ground, ensure that the bearing capacity of the ground is enough. An BSC cabinet requires the ground to possess a bearing capacity of no less than 450 kg/m2.In the case of installation on the other unconventional floors, select Others from the Installation Mode list and make a comment in the remarks area.

II. Cabling Mode

Two modes are available for cabling, overhead cabling and underfloor cabling. Which mode to choose is up to the customer. If it is decided to route the trunk cables, clock cables, power busbars and Ethernet cables in different modes, indicate the cabling mode of the trunk cables here. Show the cabling modes of the other cables separately in the cabling diagram. In the case of overhead cabling, measure the height of the cabling rack. That is, indicate the vertical distance between the ground/floor and the cabling rack. Make sure that there is enough vertical space to erect the cabinet (N68E-22 is 2.2 m high).

h Indicates only the vertical distance between the cabinet top and the cabling rack. Cabling rack height = h + cabinet height

Figure 3-1 Position of installing rack

III. Net Height of the Equipment Room

The net height of the equipment room refers to the vertical distance between the ground/floor and the beam bottom. Make sure that it is sufficient to erect the cabinet.

IV. Side Door Quantity

Consult the list of contracts or those concerned to determine how many cabinets to install. If a PDF is involved, check whether the PDF is of the same type as a BSC cabinet because this impacts the number of required side panels.Determine the side door quantity on the principle that each row of cabinets needs 2 side doors. If it is decided to combine several cabinets of the same type in a row, no side door is required between the cabinets. For example, a single cabinet needs 2 side doors. Two separate cabinets of the same type require 4 side doors. Two combined cabinets demand 2 side doors. In the case of expansion, determine the quantity of the side doors as needed.



3.3.2 Power Distribution Cable Survey

The power distribution cables run from the DC PDF (distribution box) to the DC power supply of each rack. The BSC6900 cabinet with internal power distribution uses dual-2 Channels power supplies (2 channels 63A circuit breaker supplies power for the top subrack and 2 channels 100A circuit breaker for the other two subracks). Each cabinet has a fixed total number of nine power distribution cables, including four –48V power cables (blue), four GND cables (black), and one PGND cable (green-and-yellow). Each power distribution cable has a ready core end terminal at one end. At the other end, an OT terminal needs to be made on the site. If the peer connector type of power cable is dual-hole OT (eg. Latin America standard) or core end terminal (eg. Singapore Distribution), feed back the special requirement in Survey Report. The length of a power distribution cable is equal to the cabling distance between the DC PDF (distribution box) and the connected cabinet. Note that there is a difference of at least the cabinet height between the length required for overhead cabling and that required for underfloor cabling.

1. Core end terminal 2. OT terminal

Figure 3-1 –48V power cable/GND cable of BSC

A power distribution cable is available normally with two core diameters: 25 mm2 and 35 mm2. Calculate the required cross-sectional area of the power distribution cable using the following formula:

S=ΣI ·L / (K ·ΔU)Wherein,ΣI: Total current (A) in the conductor. It is normally 55 A for the BSC6900.L: Total length (m) of the conductor loop (distance x 2)ΔU: Voltage drop (V) in the conductor. It is normally 2.6 V unless otherwise specified.K: Electrical conductivity (K-copper = 57, K-aluminum = 34)Work out the required core diameter. If S exceeds 25 mm2, select 35mm2 power distribution cables.The calculation shows that the required core diameter varies with the length of the conductor loop between the PDF and the PDB of a cabinet. The 25mm2 cables apply when the length of the conductor loop is less than 65 m. The 35mm2 cables apply when the length of the conductor loop is greater than 65 m and less than 95m. If the length of the conductor loop is greater than 95m, the PDF should be installed near the BSC (satisfied the length of the conductor loop is less than 95m). If there is no PDF in the contract, the contract changing process must be considered.Specify any special requirement for a special power distribution cable color other than the default colors like blue, black and green-and-yellow in the remarks area.

3.3.3 LSZH Cables Requirement

LSZH cables are required by some European telecom operators. It stands for Low Smoke Zero Halogen and describes a cable jacket material that is non-halogenated and flame retardant. This type of jacket material has excellent fire safety characteristics of low smoke, low toxicity and low corrosion. This type of cable jacket is used in inter-subrack cables (inter-SCU cables, inter-TNU cables, Y-shaped clock cables), shielded network cables, common straight-through network cables, trunk cables, optical fiber cables, and power cables, in order to protect people and equipment from toxic and corrosive gasses.

In surveying process, adopting the LSZH cables affects the quantity of cables of inter-SCU cables, inter-TNU cables, Y-shaped clock cables.



3.3.4 Trunk Cable Survey

I. About Trunk Cables

The BSC6900 supports three types of trunk cables: E1 75Ω coaxial cable, E1 120Ω twisted pair cable, and T1 120Ω twisted pair cable.Figure 4-5 shows the outline of an E1 75Ω coaxial trunk cable.

1. DB44 connector 2. Main label (identifying cable code, version, and vendor information)3. Label (identifying a coaxial cable) 4. Shell (metal shell of the DB44 connector)

Figure 3-1 Outline of E1 75Ω coaxial cable

The purpose of a 75Ω coaxial cable is to transfer E1 trunk signals between an AEUa/PEUa/EIUa and the DDF or another NE.A 75Ω coaxial cable takes the 2 x 8 core structure. Every two coaxial cables form one group, and either of them contains 8 micro-coaxial cables. The 16 micro-coaxial cables in each group constitute 8 E1 transceiver systems.Figure 4-6 shows the outline of an E1 75Ω coaxial trunk cable (Y-Shaped).

(1) DB-44 connector (2) Main label (identifying the code, version, and manufacturer information of the cable)(3) Label (identifying a coaxial cable) (4) Metal case of the DB-44 connector

Figure 3-2 Outline of E1 75Ω coaxial cable (Y-Shaped)

The Y-shaped BSC 75Ω coaxial cable is a trunk cable. It is an optional configuration. The number of the Y-shaped 75Ωcoaxial cables to be installed depends on the site requirements. This cable is used to transmit E1 trunk signals. It connects the active/standby AEUa/PEUa/EIUa board to the DDF or other NEs.The Y-shaped 75Ω coaxial cable used in the BSC has two DB-44 connectors at one end and has a structure of 2 x 8 cores. That is, the 75-ohm coaxial cable is composed of two cables, each of which contains 8 micro coaxial cables. All of the 16 micro coaxial cables form eight E1 RX/TX linksSurvey the Y-shaped BSC 75Ω coaxial cable as the ordinary 75Ω coaxial cable.Figure 4-7 shows the outline of an E1 120Ω twisted pair cable.

1. DB44 connector 2. Main label (identifying cable code, version, and vendor information)



3. Label (identifying a twisted pair cable) 4. Shell (metal shell of the DB44 connector)

Figure 3-3 Outline of E1 120Ω twisted pair cable

The purpose of a 120Ω twisted pair cable is to transfer E1 trunk signals between an AEUa/PEUa/EIUa and the DDF or another NE. It has a ready DB44 connector at one end. At the other end, a connector needs to be made on the site.Figure 4-8 shows the outline of an E1 120Ω twisted pair cable (Y-Shaped).

(1) DB-44 connector (2) Main label (identifying the code, version, and manufacturer information of the cable)(3) Label (identifying a twisted pair cable) (4) Metal case of the DB-44 connector

Figure 3-4 Outline of E1 120Ω twisted pair cable (Y-Shaped).

The Y-shaped BSC 120Ω twisted pair cable is a trunk cable. It is an optional configuration. The number of the 120Ω twisted pair cables to be installed depends on the site requirements. This cable is used to transmit E1 trunk signals. It connects the active and standby AEUa/PEUa/EIUa boards to DDF or other NEs.Survey the Y-shaped BSC 120Ω twisted pair cable as the ordinary 120Ω twisted pair cable.A T1 100Ω twisted pair cable appears like an E1 120Ω twisted pair. It is largely used in North America. As the system has found few applications in the area up to now, Huawei has not released any specifications on the delivery of the T1 100Ω twisted pair cables. Specify any requirement for a T1 100Ω twisted pair cable in the remarks area.The 75Ω trunk cables normally fall into three categories according to the core diameter: 2.2mm cable, 3.4mm cable, and 3.9mm cable. By default, the 2.2 mm 75Ω trunk cables are delivered. The 120Ω trunk cables normally fall into two categories according to the core diameter: 0.4 mm cable and 0.5 mm cable. By default, the 0.4 mm 120Ω trunk cables are delivered. Specify any special requirement in the remarks area.

II. Length

Cable length (for overhead cabling): cable length inside the cabinet (3 m) + vertical distance between the cabinet top and the cabling rack + cabling distance along the cabling rack between the cabinet and the DDF + vertical distance between the DDF top and the cabling rack. See Figure 4-9. Measure each section of length, and sum these lengths up to get the required cable length.



Figure 3-1 Calculating required trunk cable length for overhead cabling

Cable length (for underfloor cabling): cable length inside the cabinet (3 m) + vertical distance between the cabinet bottom and the ground + cabling distance between the cabinet and the DDF + vertical distance between the DDF bottom and the ground. See Figure 4-10. Measure each section of length, and sum these lengths up to get the required cable length.

Figure 3-2 Calculating required trunk cable length for underfloor cabling

3.3.5 Description of the Straight-Through Cables on the Ater Interface

When the BSC6900 was configured as GO or GU mode, Ater interface should be surveyed. If the straight-through cables between the BM and the TCS to be used on the Ater interface, the left grid should be marked. The number of required E1 cables is the half of the number of E1 cables when the DDF is used. The length is determined based on the requirements in the survey report.The length of a cable (upward cabling): The cabling length of the trunk cables in a cabinet (TCS) + distance between the top of the cabinet and the cable ladder * 2 + cabling distance on the cable ladder + the cabling length of the trunk cables in a cabinet (BM).The different distances should be measured that shown in the following figure. The total value is the length of a cable.



Figure 3-1 Straight-through cables on the Ater interface (upward cabling)

The length of a cable (downward cabling): The cabling length of the trunk cables in a cabinet (TCS) + distance between the cabinet and the floor * 2 + cabling distance on the cable ladder + the cabling length of the trunk cables in a cabinet (BM).The different distances should be measured that shown in the following figure. The total value is the length of a cable.

Figure 3-2 Straight-through cables on the Ater interface (downward cabling)

Note:

The straight-through cables on the Ater interface can be laid in different cabinets or in the same cabinet. For example, when the BMs and the TCSs are installed in the same cabinet, the length of the straight-through cables on the Ater interface is fixed. 2.2 m long cables are used to interconnect adjacent subracks in the same cabinet. 2.7 m long cables are used to interconnect interphase subracks in the same cabinet.

3.3.6 Optical Fiber Survey

For the BSC6900, the optical fiber survey refers to the survey of the patch cords for the Iub, Iu-CS, Iu-PS, Iur, Iu-BC, Abis, Ater, A and Pb interfaces.



Note:

A patch cord is the tail of an optical path. It consists of an optical tail and two end connectors.

I. Optical Fiber Type and Interface Type

The optical fibers fall into two types: single-mode fibers and multi-mode fibers. By default, the single-mode optical fibers are delivered.There are three common types of fiber connectors: SC/PC connectors, FC/PC connectors, and LC/PC connectors. The boards in the BSC6900 provide LC/PC ports to match LC/PC connectors. Therefore, each optical fiber for the BSC6900 has an LC/PC connector at one end. The type of the connector at the other end depends on the peer device (ODF or another NE). The BSC6900 is equipped with three types of optical fibers: LC/PC-LC/PC-single-mode/multi-mode optical fibers, LC/PC-FC/PC-single-mode/multi-mode optical fibers, and LC/C-SC/PC-single-mode optical fibers.Figure 4-13 shows the outline of an LC/PC-LC/PC-single-mode/multi-mode optical fiber.

Figure 3-1 Outline of LC/PC-LC/PC-single-mode/multi-mode optical fiber

Figure 4-14 shows the outline of an LC/PC-FC/PC-single-mode/multi-mode optical fiber.

Figure 3-2 Figure 4-10 Outline of LC/PC-FC/PC-single-mode/multi-mode optical fiber

Figure 4-15 shows the outline of an LC/PC-SC/PC-single-mode optical fiber.

Figure 3-3 Outline of LC/PC-SC/PC-single-mode optical fiber

If BSC6900 configured as GO or GU mode, the Ater interface should be surveyed. The Ater interface maybe connects directly between two racks, or connects by the ODF. If the Ater interface connects directly, the connector type is LC/PC. If connects by the ODF, the connector type is decided by the ODF’s type.

II. Survey of Patch Cords

Use single-mode optical fibers as patch cords for the Iub, Iu-CS, Iu-PS, Iur, Iu-BC, Abis, Ater, A and Pb interfaces, except when the peer devices require multi-mode optical fibers.The LC/PC-FC/PC single-mode optical fibers are available in the following standard lengths: 10 m, 15 m, 20 m, 25 m, 30 m and 50 m. The LC/PC-SC/PC single-mode optical fibers are available in the following standard lengths: 10 m, 15 m, 20 m, 25 m, 30 m and 50 m. The LC/PC-LC/PC single-mode optical fibers are available in the following standard lengths: 1.5 m, 5 m, 10 m, 15 m, 20 m, and 30 m. The LC/PC-FC/PC multi-mode optical fibers are available in the following standard lengths: 10 m. The LC/PC-SC/PC multi-mode optical fibers are available in the following standard lengths: 10 m. The LC/PC-LC/PC multi-mode optical fibers are available in the following standard lengths: 5 m and 10 m.The quantity of the optical fibers depends on the list of contracts and the actual engineering demand.



III. Description of the Straight-Through Optical Fibers on the Ater Interface

If the straight-through optical fibers between the BM and the TCS are used on the Ater interface, mark the left grid, when the BSC6900 configured as GO or GU mode. The number of required optical fibers is the half of the number of E1 cables when the ODF is used. The length is determined based on the requirements in the survey report. The default length is 9.7m. For the survey length and quantity, refer to section 3.3.5 "Description of the Straight-Through Cables on the Ater Interface."

3.3.7 Optical Splitter Survey

An optical splitter is used for connecting the AOUa, UOIa, AOUc, POUc, or UOIc board to peer fibers, Optical Distribution Frame (ODF), or interconnection network element (NE). A maximum of 48 optical splitters/combiners can be installed in a subrack. The actual number is determined by site requirements. An optical splitter has LC/PC connectors at both ends. Optical fibers are classified into single-mode and multi-mode.

NOTE

1. Connect the end with two LC/PC connectors to the active and standby optical interface boards in the BSC, and the other end with one LC/PC connector to an NE at the peer end or ODF through a fiber adapter. The type of connector at the peer end depends on site requirements. 2. Use two optical splitters to work as a pair of optical fibers, and attach temporary labels to both ends of each fiber in the pair.

WARNING

The TX -and RX ends of each device must be connected correctly. Otherwise, -optical signals cannot be received or transmitted.

An optical splitter is a passive duplex component with three ends- and can split and combine optical signals.The following figure shows the exterior of -an optical splitter.

1. LC/PC connector 2. Optical Splitter3. Single/Multi-Mode Optical Fiber

Figure 3-1 Optical Splitter

NOTE

The dimensions (H x W x D) of an optical splitter are 9 mm x 90 mm x 16 mm (3.54 in. x 35.4 in. x 6.24 in.)The length of a single-mode or multi-mode optical cable is 1 meter, and the total length of an optical splitter is 2 meters.An optical splitter splits one input of optical signal to two at a ratio of 1:2.The insertion loss of a single-mode optical splitter, multi-mode optical splitter, and fiber adapter does not exceed 3.8 dB, 4.2 dB, and 0.3 dB, respectively.



During a survey, you need to take into account the loss of the optical power because insertion loss occurs in an optical splitter and fiber adapter. The loss of the optical power must meet the following condition: Original optical power loss + Insertion loss of the optical splitter + Insertion loss of the fiber adapter < Minimum output optical power of the optical module in the BSC – Maximum receive sensitivity of the optical module at the peer endThe following table lists the optical power and the receive sensitivity of the optical module in the BSC:

Table 3-1 The optical power and the receive sensitivity of the optical module in the BSC

Board

Transmission

Distance

Mode

Minimum

Output Optical Power

Maximum Output Optical Power

Maximum Receive

Sensitivity

Connector

Code of the

Optical Module

AOUa/AOUc/UOIa/UOIc/POUc

2 km Multi-mode

-19.0 dBm -14.0 dBm -30.0 dBm LC 34060287

15 km Single-mode

-15.0 dBm -8.0 dBm -31.0 dBm LC 34060276

40 km Single-mode

-5.0 dBm 0. dBm -37.0 dBm LC 34060281

An optical splitter is required when the previous boards work in active/standby mode and transmission devices do not work in active/standby mode. The total length of an optical splitter is 2 meters. During a site survey, make the following decisions:

Whether optical splitters are required

Number of required optical splitters

Whether single-mode or multi-mode splitters are required

An optical combiner can combine two inputs of optical signals into one, as shown in Figure 3-2.

Figure 3-2 Operating principle for an optical combiner

An optical splitter can split one input of optical signal into two, as shown in Figure 3-3.

Figure 3-3 Operating principle for an optical splitter

The following figure shows the position for installing an optical splitter.



Figure 3-4 Position for installing an optical splitter

The following figure shows the position for installing optical fibers for an optical splitter.

Figure 3-5 Position for installing optical fibers for an optical splitter



When an optical splitter is connected to other devices, a fiber adapter is required. No site survey is required for fiber adapters because they are selected and delivered based on the common optical fibers to be used in the live network.

3.3.8 Network Cable Survey

The Ethernet cables serve Ethernet transmission between devices. Each network cable has an RJ45 at either end. The BSC6900 is equipped with two types of Ethernet cables: shielded cables and unshielded cables. Figure 4-16 and Figure 4-17 show the outline of a shielded network cable and that of an unshielded network cable.

Figure 3-1 Outline of shielded network cable

Figure 3-2 Outline of unshielded network cable

Shielded Ethernet is used under IP networking delivered by defining length. Use unshielded Ethernet cables (ordinary Ethernet cables) to connect the SCUa boards and OM networking.

I. Survey of Shielded Ethernet Cables for IP interface boards

When the interface board is used for IP networking, shielded Ethernet should be surveyed. Specific RJ45 connector is used for shielded Ethernet and is ready before delivery. Survey the length and quantity of each interface according to actual networking.

Caution:

The connectors of the shielded Ethernet cables are made using a special tool and are difficult to prepare on the site. Therefore, be sure to make an accurate survey of the shielded cables. In case of any error, Huawei has only to make a redelivery.

II. Survey of Ordinary Unshielded Ethernet Cables

The ordinary unshielded Ethernet cables are delivered in rolls and connectors should be made on sites. The ordinary unshielded Ethernet can find use in many applications. They connect the inter-SCUa boards between subracks. They connect OMUa boards to the customer's switch. They connect the LMTs to the customer's LAN. They link the BSC6900 with the M2000 with a maintenance WAN. When you doing the survey, the length of Ethernet cables is the sum of all scenarios (for the newly deployed BSC, the interconnecting straight through cables between SCUa boards in MPR cabinet are not included.).In consideration of shrinkage, leave a margin of 15% of the required quantity of the RJ-45 connectors and 20% of the required network cable length.In the BSC6900, the SCUa boards in the MPS and those in the EPS(s) are interconnected through



unshielded Ethernet cables. The SCUa boards are connected in a star mode. The unshielded Ethernet cables connect the 10/100/1000BASE-T ports of the SCUa boards in the MPS with the corresponding 10/100/1000BASE-T ports of the SCUa boards in each EPS. The SCUa boards in different EPSs are not connected with one another.When a new BSC is established, if only there is a MPR cabinet, it is not necessary to survey the network cables. In the case of capacity expansion or the new BSC has other cabinets, all the cables of 2.2 m, 2.7 m, and 9.7 m should be surveyed.

Caution:

The MPS is installed with the OMU board. The survey of the inter-SCUa unshielded straight through cables in the MPS is not required. The EPS subrack has no OMU board. The survey of the inter-SCUa unshielded straight through cables is required.

For the newly deployed BSC, the survey of the EPS cables in the MPR is not required, because the cables are fully configured by default. For an expanded BSC cabinet, if the EPS is added in the MPR, the corresponding survey is required.

In RAN11 and later versions, straight through cables are used to interconnect the SCUs between subracks.

Figure 4-18 shows how to connect the SCUa boards in the MPS and those in an EPS.

Figure 3-1 Connecting SCUa boards in MPS and those in an EPS through crossover Ethernet cables

Figure 4-19 shows the position of the unshielded Ethernet cables in the BSC6900.



Figure 3-2 Position of crossover Ethernet cables between SCUa boards in BSC6900

3.3.9 SFP+ High-Speed Cables Survey

The SFP+ high-speed cables were used to connect SCUb board between different subracks. When a single cabinet BSC is established, it is not necessary to survey the SFP+ high-speed cables. In case of capacity expansion or establish a multiple cabinets BSC, the cables should be surveyed. The cable of 3 m is used for the connection two subracks in the same cabinet. The cable of 10 m is used for the connection between subracks in different cabinets. The follow figure shows how to connect SFP+ high-speed cables in single cabinet.



Figure 3-1 Position of SFP+ high-speed cables between SCUb boards in BSC6900

The follow figure shows how to connect SFP+ high-speed cables in multi cabinets.



Figure 3-2 Position of SFP+ high-speed cables between SCUb boards in multi cabinets

3.3.10 Corrugated PVC Tube/PVC Trough Survey

Protect the optical fibers outside the cabinet with a corrugated PVC tube. In the case of overhead cabling, enclose the length of optical fibers between the cabinet top and the cabling rack in a corrugated PVC tube. In the case of underfloor cabling, enclose the whole length of optical fibers outside the cabinet in a corrugated PVC tube. The corrugated PVC tube is an insulation material-fireproof corrugated PVC tube-Φ40 or Φ25. The Φ40 corrugated PVC tube can accommodate as many as 54 patch cords. And the Φ25 corrugated PVC tube can accommodate as many as 10 patch cords. By default the Φ40 corrugated PVC tube is delivered. The corrugated PVC tube does not need to be quoted. Measure the length required for each cabinet, and sum these lengths up to get the total required length. Consider a certain margin during this survey. The purpose of a PVC trough is to protect the alarm signal cables routed upward or downward along a wall. The length of the PVC troughs depends on the length of the signal cables routed along a wall (each PVC trough is 2 m long). Consider a certain margin during this survey.

3.3.11 Surveying Inter-TNU Cables

If the BSC6900 configured as GO or GU mode, the TNU cables should be surveyed. TNU crossover cables are used to connect BSC6900 TNU subracks.Generally, TNU crossover cables for new BSCs are delivered after pre-installation. Cables that connect



TNUs in the same subrack do not need to be surveyed. But these cables must be surveyed for BSC expansion projects.LSZH cables that are required by the telecom operators in European regions must be surveyed no matter whether they are used for new BSC projects or expansion projects. The length and quantity must be recorded in the survey report.

Note:

Install cables in subracks orderly. The central subrack is the subrack that is at the bottom of the first cabinet.

I. Introduction to the Cable

The Inter-TNU Cables are used for full interconnection between the BSC6900 TNUs of a BM cabinet or a TC cabinet.The follow figure shows the appearance of the Inter-TNU Cables.

(1) DB14 (2) Label (identifies a group of twisted pair cable)

(3) Main label (identifies the cable number, version, and vendor information)

Figure 3-1 Appearance of Inter-TNU Cables

The two DB14 connectors on one end of the Inter-TNU Cable connect to the active/standby mode TNU boards of a service subrack, and the other two DB14 connectors on the opposite end connect to the active/standby mode TNU boards of another service subrack.Figure 3-2 shows the installation position of the Inter-TNU Cables on the panel.



Figure 3-2 Installation position of the Inter-TNU Cables

The standard lengths of the Inter-TNU Cables are 2.2 m, 2.7 m, and 9.7 m. The length and quantity of the Inter-TNU Cables are determined based on the site survey.

II. How to Calculate the Length and Quantities

Select the length of the Inter-TNU Cable according to the following:The 2.2 m cables are for the interconnection between TNUs of adjacent subracks

within a cabinet.The 2.7 m cables are for the interconnection between TNUs of non-adjacent subracks

within a cabinet.The 9.7 m cables are for the interconnection between TNUs of two different cabinets.

When a new BSC is established, if only there is a MPR cabinet, it is not necessary to survey the inter-TNU cables. In the case of capacity expansion or the new BSC has other cabinets, all the cables of 2.2 m, 2.7 m, and 9.7 m should be surveyed.Figure 3-14 shows the 2.2 m cabling between TNUs of adjacent subracks within a cabinet.



Figure 3-1 Inter-TNU Cables of 2.2 m

Figure 3-25 shows the 2.7 m cabling between TNUs of non-adjacent subracks within a cabinet.


Figure 3-3 shows the 9.7 m cabling between the TNU boards of different cabinets.




The quantities of subracks and cables required are shown as follows.The full TNU interconnection is required between the MPS subrack and EPS subrack.

For the quantity and type of the cables, refer to Table 3-1.

Table 3-1 Quantity of TNU cables between the MPS subrack and the EPS subrack

Quantity of Subracks Required Quantity and Length of Inter-TNU CABLES

Single MPSInter-TNU Cables are not required

MPS + EPS

In a same cabinet

Adjacent Two 2.2 m Inter-TNU Cables

Non-adjacent Two 2.7 m Inter-TNU Cables

In different cabinets Two 9.7 m Inter-TNU Cables

MPS + two EPSs (in two cabinets, with one cabinet having two subracks and the other having one subrack)

Two subracks in one cabinet are adjacent

Two 2.2 m cables + four 9.7 m cables

Two subracks in one cabinet are not adjacent

Two 2.7 m cables + four 9.7 m cables

MPS + three EPSs (may be placed in two or three cabinets based on the relevant rule)

Use 2.2 m or 2.7 m cables if they are in one cabinet; use 9.7 m cable if they are in different cabinets. (NOTE: 12 cables are required in total.)

The full TNU interconnection is also required between the TC subracks. For the quantity of cables required, refer to Table 4-3.



Table 3-2 Quantity of TNU cables between the TC subracks

Quantity of Subracks Required Quantity and Length of Inter-TNU CABLES

One TCS Inter-TNU Cables are not required

Two TCS

Total quantity of Inter-TNU Cables required two. Length: Use 2.2 m or 2.7 m cables if the TCs are in one cabinet, and use 9.7 m cables if the TCs are in different cabinets. The detailed methods are similar to the MPS and EPS interconnection solution.

Three TCS

Total quantity of Inter-TNU Cables required six. Length: Use 2.2 m or 2.7 m cables if the TCs are in one cabinet, and use 9.7 m cables if the TCs are in different cabinets. The detailed methods are similar to the MPS and EPS interconnection solution.

Four TCS

Total quantity of Inter-TNU Cables required twelve. Length: Use 2.2 m or 2.7 m cables if the TCs are in one cabinet, and use 9.7 m cables if the TCs are in different cabinets. The detailed methods are similar to the MPS and EPS interconnection solution.

The MPS connects to the TCS through the ATER interface without the TNU interconnection.

Note:

To enhance the system reliability and increase the interconnection bandwidth globally, the full interconnection module is used for the TNU boards between the BSC6900 subracks. If n subracks are fully interconnected, the quantity of cables for interconnection is n (n-1).

3.3.12 Clock Cable Survey

I. Survey of Y-Shaped Clock Cables

Overview of Y-Shaped Clock Cables

The Y-shaped clock cables are mandatory for the BSC6900. They transfer location information and synchronous clock signals from the GCUa boards in the MPS to the SCUa boards in the EPS(s). The GCUa boards and the SCUa boards in the MPS are already connected through the backplane. Therefore, no Y-shaped cable is required between them. Figure 3-27 shows the outline of a Y-shaped cable.

Caution:

The MPS is installed with the OMU board. The survey of the Y-shaped cables in the MPS is not required. The EPS subrack has no OMU board. The survey of the Y-shaped cables is required.

For the newly deployed BSC, the survey of the EPS cables in the MPR is not required, because the cables are fully configured by default. For an expanded BSC cabinet, if the EPS is added in the MPR, the corresponding survey is required.



1. Label (identifying a twisted pair cable) 2. RJ45 connector

Figure 3-1 Outline of a Y-shaped clock cable

Figure 3-28 shows how to connect the GCUa/GCGa boards in the MPS and the SCUa boards in an EPS through Y-shaped clock cables.

Figure 3-2 Connecting GCUa/GCGa boards in MPS and SCUa boards in an EPS through Y-shaped clock cables

Length

The Y-shaped clock cables are delivered ready made. They are available in three fixed lengths: 2.2 m, 2.7m, and 9.7 m. If a required length is greater than 9.7 m, enter the actual required length in the form. Use 2.2m cables to connect the MPS and the neighboring EPS within the MPR. Use 2.7m cables to connect the MPS and the non-neighboring EPS within the MPR. Use 9.7m cables to connect the MPS and the EPS(s) in the EPR, if any combined with the MPR. See Figure 3-29. When a new BSC is established, if only there is a MPR cabinet, it is not necessary to survey the Y-shaped clock signal cables. In the case of capacity expansion or the new BSC has other cabinets, all the cables of 2.2 m, 2.7 m, and 9.7 m should be surveyed.



Figure 3-3 Lengths of Y-shaped clock cables

Quantity

The active and standby GCUa boards in the MPS respectively have one Y-shaped clock connected with the SCUa boards in each EPS. Therefore, the number of Y-shaped clock cables is equal to the number of EPSs multiplied by 2.Table 3-4 lists how many and how long Y-shaped clock cables are required in each configuration scenario.

Table 3-1 Quantity of Y-shaped clock cables

Number of Subracks Quantity and Length of Y-Shaped Clock Cables

1MPS N/Y.1MPS + 1EPS (within the MPR) 2 2.2m cables

1MPS + 2EPS (within the MPR) 2 2.2m cables + 2 2.7m cables1MPS + 3EPS (2 EPSs in the MPR and the rest 1 EPS in the EPR) 2 2.2m cables + 2 2.7m cables + 2 9.7m cables1MPS + 4EPS (2 EPSs in the MPR and the rest 2 EPS in the EPR) 2 2.2m cables + 2 2.7m cables + 2 x 2 9.7m cables1MPS + 5EPS (2 EPSs in the MPR and the rest 3 EPS in the EPR) 2 2.2m cables + 2 2.7m cables + 3 x 2 9.7m cables

II. Survey of BITS Clock Cables

Skip this survey unless the BSC6900 uses BITS clock cables.The BITS clock cables are physically normal E1 cables. The BSC6900 supports the following types of BITS clock cables: 75Ω-SYV-75-2-2 (3.9mm, default), 120Ω-0.5mm (default), and 120Ω-0.4mm. Each BITS clock cable has a ready SMB connector to be connected with a GCUa at one end. At the other end, an SMB or BNC connector needs to be made on the site. Specify any requirement for a ready connector at the other end in the remarks area with the connector type.

III. Survey of Line Clock Cables

Skip this survey unless the BSC6900 uses line clock cables.



The length of a line clock cable is equal to the cabling distance between a line clock interface board and the connected GCUa. If the line clock interface boards and the GCUa boards are within the same subrack (for example, MPS), they communicate through the backplane and no line clock cable is required between them.Each line clock cable has a ready SMB connector at one end. At the other end, a fitted SMB connector needs to be attached on the site.

3.3.13 GPS Antenna Feeder Survey

Skip this survey if the contract does not cover a GPS.The GPS antenna feeder signals travel through the lightning arrester and an RF cable to the ANT terminal on the panel of a GCGa boards (a clock board with a GPS satellite card) and then to the GPS satellite card. After processed by the GPS satellite card, the signals are then distributed to the system.Table 3-5 lists the available types of feeders.

Table 3-1 Available types of feeders

Distance between Antenna and WMPR Feeder Type Cabling

300 m 5/4" feeder Connect the feeder through a jumper to the SURGE terminal of the lightning arrester, as shown in Figure 4-14.100–300 m 7/8" feeder

< 100 m 1/2" feeder Connect the feeder through a jumper to the SURGE terminal of the lightning arrester, as shown in Figure 4-15.

The following figure shows how to install a 7/8" or 5/4" feeder.

Figure 3-2 Installing 7/8" or 5/4" feeder

Figure 3-31 shows how to install a 1/2" feeder.



Figure 3-3 Installing 1/2" feeder

Enter the actual required GPS feeder length in the form. The length determines whether to use a 1/2", 7/8", or 5/4" feeder. Use a 1/2" feeder if the length is less than 100 m. Use a 7/8" coaxial cable if the length is between 100 m and 300 m. Use a 5/4" coaxial cable if the length is greater than 300 m. The Order Configuration Department will deliver the appropriate types of feeders, jumpers and coaxial connectors according to the actual required length. There are two types of window of the feeder: 7/8" and 5/4". 7/8" feeder window is corresponding to 1/2" and 7/8" feeders; and 5/4" feeder window is corresponding to 5/4" feeders. According to the actual situation, tell whether to use a feeder window. If the window of the feeder is not supplied by the customer, it should be surveyed to be delivered. The Order Configuration Department will deliver the appropriate type of feeder window. If the customer already supplies the window of the feeder, please confirm that the type of the window of the feeder is corresponding to the type of the feeders.

3.3.14 Alarm Box Cable Survey

The alarm box cables consist of power cables and signal cables. They have two connection options. One is to connect them with the BAM servers. The other is to connect them with the alarm console of the M2000. Select one of them according to the actual situation and customer demand.

I. Signal cable

The alarm signals are retrieved from the BAM servers or the terminal serial ports through RS-232 cables. An RS-232 cable is normally 20 m long, and at most 100 m long. Figure 3-32 shows the outline of an alarm signal cable.

Figure 3-1 Outline of alarm signal cable

II. Power cable

The alarm box supports two power inputs 220V AC and –48V DC.If it is decided to use the DC power input, lead a special power cable from the BSC6900 to the special trough of the alarm box. The power cables are available in a standard length of 30 m. The alarm signal cables are available in a standard length of 30 m to 60 m. Enter the actual required length in the form. If a required length is greater than the standard length, the Order Configuration Department will



deliver an additional length.If it is decided to use the AC power input, use a default 6m-long AC power cable. Normally no additional length is available. If the alarm box is more than 6 m away from the AC power source, add a socket near the alarm box. Make a survey of the alarm signal cables. Judge the required alarm cable length according to the cabling distance. Note that the alarm cables cannot be routed together with AC power cables and other interference sources.It is recommended to use the 220V AC power input.

III. Others

Make a survey of the other alarm box accessories, such as PVC protection trough. The PVC protection trough is used to protect the alarm signals below the floor. In the case of underfloor cabling, it is acceptable not to enclose the whole length of alarm cables in a PVC protection trough. The length routed upward or downward along a wall can be packed in PVC protection troughs, 2 m in each trough. The PVC will not deliver any more, if need PVC, please purchase it.Make a survey of the alarm box cables if the BSC6900 is separately delivered. Skip this survey if it is decided to deliver the BSC6900 together with the M2000. In the latter case, the survey of the alarm box cables is concurrent with that of the M2000.

3.3.15 Survey of LMT

Mainly surveying plug type of power cable of LMT computer. Chinese standard is delivered by default. If plug type is England standard or some others, please feed-back the special requirement in Survey Report.



3.4 Appendix 1 Site Survey Memo (Optional)

Clearly elaborate any matter not covered in the Site Survey Report in the Site Survey Memo. Ask the customer to confirm the Site Survey Memo in the form of signature.

1) When finding survey not permitted in whole or in part by the actual conditions, subject to the terms and conditions of the contract, inform the customer that survey will fail the deadline and will affect the delivery and project schedule. Log the information in the Site Survey Memo. Ask the customer to confirm the information in the form of signature. Submit a report to the Representative Office and Huawei HQ.

2) When finding some required but survey-unaffected items not completed, log the items in the Site Survey Memo with the specific requirements and deadline (earlier than the deployment date) for each item. Ask the customer to confirm the information in the form of signature. Submit a report to the Representative Office and Huawei HQ.

3) Log any information not covered in the Site Survey Report and any custom cable and board alike of a special type (for example, with a special interface or in a special length) in the Site Survey Memo.

4) Specify in detail any special customer demand that is beyond Huawei's existing products or that Huawei cannot fulfill for the moment in the Site Survey Memo. Submit a report to the Representative Office and Huawei HQ.

3.5 Appendix 2 Installation Environment Checklist

The purpose of installation environment check is to make sure that there are basically satisfactory equipment installation conditions on the site. Fill out the Installation Environment Checklist according to the actual situation.Civil engineering: Check the building and decoration of the equipment room. Check that the area, height, roof, doors, windows, walls, shockproof capacity, lightning protection, and antistatic capacity of the room are all satisfactory.Power supply system: Check that the power supply is ready with a sufficient capacity and appropriate types of terminals.Transmission system: Check that the PDF, DDF, and/or ODF are ready with appropriate types of terminals and are well grounded.Interior protection grounding system: Check that the grounding bars and grounding busbars are ready with a less than 5Ω grounding resistance.Interior cabling rack/trough: Check the cabling mode and check that the cabling rack is ready mounted.Air-conditioning system: Check that an air-conditioning system is ready to ensure a comfortable ambient temperature.Temperature & humidity, dustproof capacity, and bearing capacity: In a long-term operating environment, the temperature should range between 5C and 40C and the relative humidity should range between 5% and 85%. In a short-term operating environment, the temperature should range between –5C and 45C and the relative humidity should range between 5% and 90%. Check that the environment is free from any impairment from static electricity or interference from electromagnetic field. Check that the bearing capacity of the room floor is equal to or greater than 450kg/m 2. The floor can be a cement, terrazzo, resin or antistatic floor that is dustproof, fireproof, insulating, and wear-resistant.

Note:

See BSC Site Preparation Guide for more information.



After the installation environment check, send a copy of Preparation Guide for the Installation to the customer. Explain the items in the Site Preparation Checklist to the customer. Ask the customer to make a preparation by the Site Preparation Checklist and send their feedback as soon as possible.

3.6 Appendix 3 Equipment Room Picture (Optional)

Take some photos of the equipment room as a reference for equipment installation, especially the door, the stairs and the aisles, because the shape of such places will affect the deployment.



Chapter 4 Reference

1. BSC6900 Product Description

2. BSC6900 Hardware Description

3. BSC6900 Site Preparation Guide

4. BSC6900 Installation Guide

5. BSC6900 System Configuration Manual


BSC6900 Site Survey Design Guide-20110520-B-V1.3

Documents

1m wide aisle

ul dl

hdlc transmission

huawei technologies

speech frame

corrugated

load bearer

gps satellite