Huawei Technologies GRFU-1900 GSM Radio Frequency Unit User Manual Commissioning Guide

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Installation Guide

BTS3900(A) GSM

V300R008

Commissioning Guide

Issue 02

Date 2009-04-20

Huawei Proprietary and Confidential

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Contents

About This Document.....................................................................................................................1

1 Changes in BTS3900(A) GSM Commissioning Guide.......................................................1-1

2 General Requirements for the Commissioning...................................................................2-1

2.1 Commissioning Resources..............................................................................................................................2-2

2.2 Commissioning Prerequisites..........................................................................................................................2-3

3 Commissioning Procedure.......................................................................................................3-1

4 Commissioning the BTS (Transmission Available)............................................................4-1

4.1 Starting the LMT.............................................................................................................................................4-2

4.2 Checking the Transmission and Networking..................................................................................................4-4

4.2.1 Checking the Transmission Between the RRU and the BBU or Between the BBU and the BSC on the

LMT................................................................................................................................................................4-5

4.2.2 Checking the Transmission Between Cascaded BTSs...........................................................................4-6

4.2.3 Checking the Transmission Between BTSs in Ring Topology..............................................................4-8

4.3 Checking Software Version and Data Configuration....................................................................................4-11

4.3.1 Checking the Board Configuration and Status on the LMT.................................................................4-11

4.3.2 Checking the Current Software Version on the LMT..........................................................................4-13

4.3.3 Checking the Consistency Between Hardware Installation and Data Configuration...........................4-14

4.4 Checking the Alarm Information of the BTS (on the LMT).........................................................................4-19

4.5 Commissioning the BTS Services.................................................................................................................4-22

4.5.1 Testing the CS Services........................................................................................................................4-23

4.5.2 Commissioning PS Services.................................................................................................................4-25

4.6 Checking the BTS Environment Alarms.......................................................................................................4-26

4.6.1 BTS Environment Alarm Types...........................................................................................................4-26

4.6.2 Checking the Environment Monitoring Alarms on the LMT..............................................................4-28

5 Commissioning the BTS (Transmission Unavailable).......................................................5-1

5.1 Starting the Site Maintenance Terminal..........................................................................................................5-2

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC...............................................................5-2

5.1.2 Locally Connecting the SMT PC to the BTS.........................................................................................5-3

5.1.3 Logging in to the BTS at the Local End.................................................................................................5-3

5.2 Configuring the Basic Data of the BTS..........................................................................................................5-5

5.2.1 Obtaining the Site Management Rights.................................................................................................5-6

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5.2.2 Configuring the Boards of the BTS on the SMT...................................................................................5-7

5.2.3 Configuring Logical Objects of the BTS on the SMT.........................................................................5-11

5.3 Checking the Active Software Version on the SMT.....................................................................................5-23

5.4 Checking the Transmission Between the BBU and RFU on the BTS Side..................................................5-25

5.5 Checking the Running Status of the BTS......................................................................................................5-26

5.5.1 Checking the State of the BTS LEDs...................................................................................................5-26

5.5.2 Checking the Alarm Information of the BTS on the SMT...................................................................5-29

5.6 Checking the Hardware Connection of the BTS...........................................................................................5-32

6 Optional Commissioning Tasks..............................................................................................6-1

6.1 Commissioning the Antenna System..............................................................................................................6-2

6.1.1 Measuring the VSWR............................................................................................................................6-2

6.1.2 Monitoring the Output Power of TRXs..................................................................................................6-3

6.1.3 Checking the Antenna Connection.........................................................................................................6-5

6.2 Performing the Loopback Test........................................................................................................................6-6

6.2.1 Performing the Carrier Loopback Test...................................................................................................6-6

6.2.2 Performing Channel Loopback Tests.....................................................................................................6-8

6.3 Checking the DIP Switch Settings of the Boards............................................................................................6-9

6.4 Locally Checking the Transmission Between the BBU and the BSC...........................................................6-10

6.5 Checking the Transmission Between Cascaded TRXs.................................................................................6-12

6.6 Checking TRXs in Ring Topology................................................................................................................6-14

7 FAQs for BTS Commissioning................................................................................................7-1

7.1 Failed Communication Between the SMT and the BTS.................................................................................7-2

7.2 Faulty E1 Link.................................................................................................................................................7-2

7.3 Failure of an MS to Search the Network.........................................................................................................7-6

7.4 Service Dialing Failure....................................................................................................................................7-7

7.5 Low GPRS Data Transmission Rate...............................................................................................................7-7

8 Commissioning Record Data Sheet........................................................................................8-1

9 Communication Ports Used by the GBTS.............................................................................9-1

Contents

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Figures

Figure 3-1 Commissioning procedure (transmission available)...........................................................................3-2

Figure 3-2 Commissioning procedure (transmission unavailable).......................................................................3-4

Figure 4-1 Login dialog box of the BSC6000 Local Maintenance Terminal.......................................................4-2

Figure 4-2 BSC Management dialog box ............................................................................................................4-3

Figure 4-3 Login dialog box of the M2000 client................................................................................................4-3

Figure 4-4 iManager M2000 Mobile Element Management System window ....................................................4-4

Figure 4-5 Check whether the link between the BBU and the BSC is normal....................................................4-6

Figure 4-6 Check whether the link between the BBU and the RFU is normal....................................................4-6

Figure 4-7 Cascaded BTSs on the LMT...............................................................................................................4-7

Figure 4-8 Site Device Panel tab page.................................................................................................................4-8

Figure 4-9 Connection between ring topology BTSs...........................................................................................4-9

Figure 4-10 Maintain Ring Network dialog box..................................................................................................4-9

Figure 4-11 Confirm dialog box.........................................................................................................................4-10

Figure 4-12 Result of the ring topology switchover (1).....................................................................................4-10

Figure 4-13 Result of the ring topology switchover (2).....................................................................................4-10

Figure 4-14 Site Device Panel tab page.............................................................................................................4-12

Figure 4-15 Query Board Information dialog box.............................................................................................4-13

Figure 4-16 Query Board Running Software Version dialog box ....................................................................4-14

Figure 4-17 Relation between data configuration and physical connection of the BTS3900 monitoring boards

.............................................................................................................................................................................4-15

Figure 4-18 Relation between data configuration and physical connection of the BTS3900A monitoring boards

.............................................................................................................................................................................4-16

Figure 4-19 Site Device Panel tab page.............................................................................................................4-17

Figure 4-20 Query Board Information dialog box.............................................................................................4-18

Figure 4-21 Site Device Panel tab page.............................................................................................................4-20

Figure 4-22 Filter Alarm Condition dialog box.................................................................................................4-21

Figure 4-23 Alarm Detail Information dialog box.............................................................................................4-21

Figure 4-24 BSS Help System...........................................................................................................................4-22

Figure 4-25 Modify Administrative State dialog box........................................................................................4-24

Figure 4-26 Basic Attributes of Site Board (1)..................................................................................................4-30

Figure 4-27 Basic Attributes of Site Board (2)..................................................................................................4-31

Figure 4-28 Query Board Information dialog box.............................................................................................4-32

Figure 4-29 Basic Attributes of Site Board (3)..................................................................................................4-33

Figure 5-1 Site Maintenance Terminal system window.......................................................................................5-4

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Figure 5-2 Communication failed dialog box...................................................................................................... 5-4

Figure 5-3 Set Communication Port Parameter dialog box................................................................................. 5-5

Figure 5-4 Warning message for obtaining the site management right................................................................5-6

Figure 5-5 Site Management Right dialog box....................................................................................................5-6

Figure 5-6 Board Configuration window.......................................................................................................... 5-8

Figure 5-7 Topology Configuration window.....................................................................................................5-8

Figure 5-8 Deploy DRRU dialog box ................................................................................................................. 5-9

Figure 5-9 Topology Configuration window....................................................................................................... 5-9

Figure 5-10 Board Configuration window ........................................................................................................5-10

Figure 5-11 Parameter Management dialog box.............................................................................................5-11

Figure 5-12 Site Configuration dialog box (1)...................................................................................................5-12

Figure 5-13 Site Configuration dialog box (2)...................................................................................................5-13

Figure 5-14 Site Configuration dialog box (3)...................................................................................................5-14

Figure 5-15 Site Configuration dialog box (4)...................................................................................................5-15

Figure 5-16 Site Configuration dialog box (5)...................................................................................................5-16

Figure 5-17 User Error dialog box.....................................................................................................................5-17

Figure 5-18 Site Configuration dialog box (6)...................................................................................................5-18

Figure 5-19 Configured cell and channels..........................................................................................................5-19

Figure 5-20 Site Opstart dialog box...................................................................................................................5-20

Figure 5-21 Cell Opstart dialog box...................................................................................................................5-20

Figure 5-22 BT Opstart dialog box....................................................................................................................5-21

Figure 5-23 RC Attributes Management dialog box..........................................................................................5-21

Figure 5-24 RC Opstart successfully dialog box................................................................................................5-22

Figure 5-25 Board Management window...........................................................................................................5-22

Figure 5-26 Board Management window (1).....................................................................................................5-23

Figure 5-27 Topology Management window.....................................................................................................5-24

Figure 5-28 Board Information dialog box (1) ..................................................................................................5-24

Figure 5-29 Board Information dialog box (2)...................................................................................................5-25

Figure 5-30 Board Management window ..........................................................................................................5-30

Figure 5-31 Topology Management window.....................................................................................................5-31

Figure 5-32 Board Alarm Information dialog box.............................................................................................5-31

Figure 6-1 Please select RC to test dialog box.....................................................................................................6-3

Figure 6-2 RF Performance Test dialog box........................................................................................................6-3

Figure 6-3 Test TRX Loopback dialog box......................................................................................................... 6-7

Figure 6-4 Test Channel Loopback dialog box....................................................................................................6-8

Figure 6-5 Site Device Attributes dialog box.....................................................................................................6-10

Figure 6-6 Physical loopback of E1/T1 at the DDF...........................................................................................6-12

Figure 6-7 Site Device Panel tab page...............................................................................................................6-13

Figure 6-8 Connection between TRXs in ring topology....................................................................................6-14

Figure 6-9 Site Device Attributes dialog box.....................................................................................................6-15

Figure 6-10 Set RXU Chain Break Point dialog box.........................................................................................6-16

Figure 6-11 Setting breakpoint successfully......................................................................................................6-16

Figures

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Figure 6-12 Status of the disconnected TRX ring topology...............................................................................6-17

Figure 6-13 Split RXU Chain dialog box...........................................................................................................6-17

Figure 6-14 Splitting RXU chain successfully...................................................................................................6-18

Figure 6-15 TRX ring topology in splitting state...............................................................................................6-18

Figure 6-16 Combine RXU Chain dialog box....................................................................................................6-19

Figure 6-17 Combining RXU chain successfully...............................................................................................6-20

Figure 6-18 RXU ring in combined state...........................................................................................................6-21

Figure 6-19 RXU Ring in normal state..............................................................................................................6-22

Figure 7-1 Crossed pair connection......................................................................................................................7-3

Figure 7-2 E1 link between the BTS and the BSC (1).........................................................................................7-3

Figure 7-3 E1 link between the BTS and the BSC (2).........................................................................................7-4

Figure 7-4 Physical loopback of E1/T1 on the BTS side.....................................................................................7-5

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Tables

Table 2-1 Tools required for the commissioning of the BTS3900/BTS3900A...................................................2-2

Table 3-1 Commissioning procedure (transmission available)............................................................................3-2

Table 3-2 Commissioning procedure (transmission unavailable)........................................................................3-5

Table 4-1 Monitoring boards of the BTS3900 and the BTS3900A...................................................................4-28

Table 5-1 TRX types configured on the BTS3900 GSM or the BTS3900A GSM..............................................5-7

Table 5-2 Normal states of the LEDs on the board and modules in the BBU....................................................5-27

Table 5-3 Normal states of the LEDs on the DRFU...........................................................................................5-27

Table 5-4 Normal states of the LEDs on the GATM.........................................................................................5-28

Table 5-5 Normal states of the LEDs on the FAN unit......................................................................................5-28

Table 5-6 Normal states of the LEDs on the PMU.............................................................................................5-28

Table 5-7 Normal states of the LEDs on the PSU..............................................................................................5-29

Table 5-8 Checklist for the connection of the power cables and grounding cables...........................................5-32

Table 5-9 Checklist for the connection of the signal cables...............................................................................5-33

Table 6-1 Parameter required in RF performance test..........................................................................................6-4

Table 7-1 Possible causes and handling suggestions for failed communication between the SMT and the BTS

...............................................................................................................................................................................7-2

Table 7-2 Meaning of the state of the LIU LEDs (UELP used)..........................................................................7-5

Table 7-3 Meaning of the state of the LIU LEDs (UELP not used)....................................................................7-6

Table 7-4 Possible causes and handling suggestions for service dialing failure..................................................7-7

Table 7-5 Description of the DIP switch SW2 on the GTMU.............................................................................7-7

Table 8-1 Data sheet for BTS commissioning......................................................................................................8-1

Table 9-1 The Communication Port Used by GBTS............................................................................................9-1

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About This Document

Overview

This document describes the procedures for commissioning and verifying the BTS3900/

BTS3900A GSM after it is installed. The commissioning and verification procedures ensure that

the BTS3900/BTS3900A GSM operates as required. The BTS3900/BTS3900A commissioning

scenarios include the transmission available scenario and transmission unavailable scenario.

Version

The following table lists the product versions related to this document.

Product Name Version

BTS3900 GSM (hereinafter referred to

as BTS3900)

V300R008

BTS3900A GSM (hereinafter referred to

as BTS3900A)

V300R008

Intended Audience

This document is intended for:

lField engineers

lTechnical support engineers

Organization

1 Changes in BTS3900(A) GSM Commissioning Guide

This describes the changes in the “BTS3900(A) GSM Commissioning Guide”.

2 General Requirements for the Commissioning

The general requirements for the commissioning are the commissioning prerequisites and

commissioning resources.

3 Commissioning Procedure

This describes the commissioning procedure of the BTS. According to the transmission situation

between the BSC and BTS, the commissioning procedure of the BTS can be classified into two

types: commissioning procedure in transmission available scenario and commissioning

procedure in transmission unavailable scenario.

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Commissioning Guide About This Document

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4 Commissioning the BTS (Transmission Available)

This describes how to commission the BTS when the transmission cable between the BSC and

the BTS is properly connected.

5 Commissioning the BTS (Transmission Unavailable)

This describes how to commission the BTS in the transmission unavailable scenario. The

commissioning of the BTS consists of two phases. In the initial phase of the commissioning, the

transmission cable between the BSC and the BTS is not properly connected. Commission the

BTS at the local end. In the later phase of the commissioning, the transmission cable between

the BSC and the BTS is properly connected. Commission the BTS on the BSC side.

6 Optional Commissioning Tasks

The optional commissioning tasks are the VSWR check, output power of the TRX check,

loopback test check, settings of the DIP switches on the board check, transmission between the

BBU and the BSC on the BTS side check, transmission between cascaded TRXs check, and

TRX ring topology check.

7 FAQs for BTS Commissioning

This describes the fault symptoms and cause analysis in the BTS commissioning.

8 Commissioning Record Data Sheet

This describes the data sheet that is used to record the process and result of the BTS

commissioning.

9 Communication Ports Used by the GBTS

Conventions

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates a hazard with a high level of risk, which if not

avoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not

avoided,could result in equipment damage, data loss,

performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save

time.

Provides additional information to emphasize or supplement

important points of the main text.

General Conventions

About This Document

BTS3900(A) GSM

Commissioning Guide

2 Huawei Proprietary and Confidential

Issue 02 (2009-04-20)

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are in

Courier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.

Convention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }*Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]*Optional items are grouped in brackets and separated by

vertical bars. Several items or no item can be selected.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.

Convention Description

Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.

>Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder .

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

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Commissioning Guide About This Document

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Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.

Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

About This Document

BTS3900(A) GSM

Commissioning Guide

4 Huawei Proprietary and Confidential

Issue 02 (2009-04-20)

1 Changes in BTS3900(A) GSM

Commissioning Guide

This describes the changes in the “BTS3900(A) GSM Commissioning Guide”.

02(2009-04-20)

Second commercial release

Compared with issue 01 (2009-02-16) of V300R008, no contents are deleted. The changes are

as follows:

The solution to trouble is added. For details, see 5.2.3 Configuring Logical Objects of the BTS

on the SMT, 4.2.3 Checking the Transmission Between BTSs in Ring Topology, 4.2.1

Checking the Transmission Between the RRU and the BBU or Between the BBU and the

BSC on the LMT and 5.2.1 Obtaining the Site Management Rights.

01 (2009-02-16)

Initial commercial release

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2 General Requirements for the

Commissioning

About This Chapter

The general requirements for the commissioning are the commissioning prerequisites and

commissioning resources.

2.1 Commissioning Resources

Before the commissioning, you must arrange for the tools, obtain the information about the site

to be commissioned, and download the correct software for the boards in the BTS3900/

BTS3900A.

2.2 Commissioning Prerequisites

Before the commissioning, you must check the operating status of the BTS3900/BTS3900A and

BSC.

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2.1 Commissioning Resources

Before the commissioning, you must arrange for the tools, obtain the information about the site

to be commissioned, and download the correct software for the boards in the BTS3900/

BTS3900A.

Tools

Table 2-1 describes the tools and instruments required for the commissioning.

Table 2-1 Tools required for the commissioning of the BTS3900/BTS3900A

Tools Qua

ntity

Specification

PC 1 Optional. The PC is used for the commissioning on

the BTS side when the transmission between the BSC

and BTS is unavailable. For details on the

configuration, see Configuration Requirements

for the Site Maintenance Terminal PC.

For details on how to install and use the SMT

application, see BTS3900A GSM Site Maintenance

Terminal User Guide.

Multimeter 1 Mandatory

Power Meter 1 Mandatory. The power meter is used to measure the

output power of TRXs.

Site Master 1 Mandatory. The Site Master is used to measure the

VSWR.

GSM MSs for testing 2 Mandatory. The MSs are used for the BTS service

commissioning and antenna system commissioning.

The requirements for the GSM MS for testing are as

follows:

lThe UE is configured with the SIM card.

lThe MS is registered with the HLR on the network.

Ethernet cable 1 Optional. The Ethernet cable is used to connect the

SMT PC to the BBU when the transmission is

unavailable.

NOTE

If the SMT PC is installed with the windows 98 operating

system, the type of the Ethernet cables should be crossover

cable.

2 General Requirements for the Commissioning

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Tools Qua

ntity

Specification

Serial port cable 1 Optional. The serial port cable is used when you

query the IP address of the board on the BTS side.

The auxiliary cables are listed as follows:

lOne commissioning cable connected to the serial

Ethernet port

lOne extended serial port cable

Flat-head screwdriver 1 Optional. The flat-head screwdriver is used to

remove the Ethernet cable when the transmission

between the BSC and the BTS is unavailable.

When removing the Ethernet port, you must use a

flat-head screwdriver to press the RJ45 connector

and then remove the RJ45 connector.

Light emitting diode (LED) 2 Optional. The LEDs are used to determine the RX or

TX end of the E1 line.

Information About the Base Station

Before the commissioning, you must obtain the following information about the base station:

lInformation on BTS networking and related configuration, including the BTS type,

transmission mode, networking mode, and cell configuration.

lBTS3900/BTS3900A data configured on the BSC side.

Board Software

When the transmission is unavailable, download the matching software for the boards to the

SMT PC before the commissioning.

The software for the boards in the BTS3900/BTS3900A is as follows:

lRFU software

lGTMU software

lGATM software

lPMU software

2.2 Commissioning Prerequisites

Before the commissioning, you must check the operating status of the BTS3900/BTS3900A and

BSC.

Hardware Requirements

lThe BTS3900/BTS3900A cabinet is installed and the cables are connected.

lThe BTS3900/BTS3900A has passed the hardware installation check before it is powered

on.

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lThe BTS3900/BTS3900A is powered on. For details, see Powering On the BTS3900A or

Powering On the BTS3900.

lThe BSC is installed. The system commissioning is complete, and the system is running

normally.

Software Requirements

lThe data of the BTS3900/BTS3900A is configured on the BSC.

2 General Requirements for the Commissioning

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3 Commissioning Procedure

This describes the commissioning procedure of the BTS. According to the transmission situation

between the BSC and BTS, the commissioning procedure of the BTS can be classified into two

types: commissioning procedure in transmission available scenario and commissioning

procedure in transmission unavailable scenario.

Context

lTo solve common problems that occur during the commissioning, see 7 FAQs for BTS

Commissioning.

lIn this document, RFUs are classified into two types: DRFUs and GRFUs.

Procedure

lCommissioning procedure in transmission available scenario

In the transmission available scenario, the transmission cables between the BSC and the

BTS are properly connected before the commissioning. Generally, the commissioning is

performed on the BSC6000 LMT. If the commissioning can not be performed on the LMT

independently, contact engineers on the BTS side to perform the commissioning task.

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3-1

Figure 3-1 Commissioning procedure (transmission available)

Remote

operation

Cooperation of

local and

remote operation

Run

Run the BSC LMT

Check the software version

and the data configuration

Check the alarm information of the BTS

Commission the BTS services

Check the BTS environment alarms

End

Check the Transmission and Networking

Table 3-1 Commissioning procedure (transmission available)

No. Operation Procedure Mandat

ory/

Optiona

1Operation

on the

BSC LMT

Run the BSC LMT software. For details, see 4.1

Starting the LMT.

Mandato

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No. Operation Procedure Mandat

ory/

Optiona

2Check the transmission and networking to ensure that

the transmission between the BBU and BSC, BBU and

RFU, cascaded BBUs, and cascaded RFUs is normal.

For details, see 4.2 Checking the Transmission and

Networking.

Mandato

3 Check the software version and configuration data.

For details, see 4.3 Checking Software Version and

Data Configuration.

Mandato

4 Check the alarm information of the BTS. For details,

see 4.4 Checking the Alarm Information of the BTS

(on the LMT).

Mandato

5 Operation

on the

BTS side.

Commission the antenna system. The commissioning

consists of the following items: output power of the

TRXs, voltage standing wave ratio (VSWR), and

connection between the antenna system and BTS. For

details, see 6.1 Commissioning the Antenna

System.

Optional

6 Operation

on the

BSC LMT

Perform the channel loopback test on the LMT to

ensure the normal operation of the signaling channel

and service channel. For details, see 6.2 Performing

the Loopback Test.

Optional

7 Operation

requiring

for the

cooperatio

n of the

BTS side

and BSC

side.

Commission the CS services and PS services. For

details, see 4.5 Commissioning the BTS Services.

Mandato

8 Check the environment monitoring alarm. For details,

see 4.6.2 Checking the Environment Monitoring

Alarms on the LMT.

Mandato

lCommissioning procedure in transmission unavailable scenario

In transmission unavailable scenario, the BTS commissioning consists of two phases: In

the initial phase of the commissioning, the transmission cables between the BSC and the

BTS are not properly connected. Commission the BTS at the local end. In the later phase

of the commissioning, the transmission cable between the BSC and the BTS is properly

connected. Commission the BTS on the LMT.

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Figure 3-2 Commissioning procedure (transmission unavailable)

Local operation

before the

transmission is

available

Remote operation

after the

transmission is

available

Cooperation of

the local and

remote

operation after the

transmission is

available

Run

Run the BSC LMT

Check the transmission and networking

Check the consistency between

hardware installation and data configuration

Check the alarm information of the BTS

Commission the BTS services

Check the BTS environment alarms

End

Wait till the transmission is available

Run the Site Maintenance Terminal

Configure the basic data of the site

Check the active software version

Check the transmission

between the BBU and the RFU locally

Check the operation of the BTS

Check the hardware

connections of the BTS

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Table 3-2 Commissioning procedure (transmission unavailable)

No. Operation Procedure Mandat

ory/

Optiona

1Operation

on the

BTS side.

Run the Site Maintenance Terminal. For details, see

5.1 Starting the Site Maintenance Terminal.

Mandato

2 Configure the basic data of the BTS such as boards of

the BTS and logical objects of the site to ensure that

the SMT can support the local commissioning tasks.

For details, see 5.2 Configuring the Basic Data of

the BTS.

Mandato

3 Check the active software version. For details, see 5.3

Checking the Active Software Version on the

SMT.

Mandato

4 Check the transmission between the BBU and RFU.

For details, see 5.4 Checking the Transmission

Between the BBU and RFU on the BTS Side.

Mandato

5 Check the running status of the BTS. The procedure

for checking the running status of the BTS involves

checking the state of LEDs and alarm information. For

details, see 5.5 Checking the Running Status of the

BTS.

Mandato

6 Check the hardware connection of the BTS. For

details, see 5.6 Checking the Hardware Connection

of the BTS.

Mandato

7 Commission the antenna system. The commissioning

consists of the following items: output power of the

TRXs, VSWR, and connection between the antenna

system and the BTS. For details, see 6.1

Commissioning the Antenna System.

Optional

Wait till the transmission is available.

8 Operation

on the

BSC LMT

Run the BSC LMT software. For details, see 4.1

Starting the LMT.

Mandato

9 Check the transmission and networking to ensure that

the transmission between the BBU and BSC, BBU and

RFU, cascaded BBUs, and cascaded RFUs is normal.

For details, see 4.2 Checking the Transmission and

Networking.

Mandato

10 Check the software version and configuration data.

For details, see 4.3 Checking Software Version and

Data Configuration.

Mandato

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No. Operation Procedure Mandat

ory/

Optiona

11 Check the alarm information of the BTS. For details,

see 4.4 Checking the Alarm Information of the BTS

(on the LMT).

Mandato

12 Perform the channel loopback test on the LMT to

ensure the normal operation of the signaling channel

and service channel. For details, see 6.2 Performing

the Loopback Test.

Optional

13 Operation

requiring

for the

cooperatio

n of the

BTS side

and BSC

side.

Commission the CS services and PS services. For

details, see 4.5 Commissioning the BTS Services.

Mandato

14 Check the environment monitoring alarm. For details,

see 4.6.2 Checking the Environment Monitoring

Alarms on the LMT.

Mandato

----End

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4 Commissioning the BTS (Transmission

Available)

About This Chapter

This describes how to commission the BTS when the transmission cable between the BSC and

the BTS is properly connected.

4.1 Starting the LMT

You can directly log in to the LMT, or log in to the LMT through the M2000 client.

4.2 Checking the Transmission and Networking

This describes how to check the transmission and networking. The purpose of checking the

transmission and networking is to ensure that the BTS3900A transmission cables and hardware

are correctly installed. The items to be checked consist of the transmission between the BBU

and the BSC, the transmission between the BBU and the RFU, the transmission between the

cascaded BTSs, and the transmission between the BTSs in ring topology.

4.3 Checking Software Version and Data Configuration

This describes how to check software version and data configuration to ensure the correctness

of the software version and configuration data. The items to be checked are the configuration

and status of the board, the software version information, and the consistency between the

hardware installation and the data configuration.

4.4 Checking the Alarm Information of the BTS (on the LMT)

This describes how to check the alarm information of the BTS on the BSC6000 Local

Maintenance Terminal. If an alarm is generated, you need clear the alarm based on the

suggestions in the BSS Help System.

4.5 Commissioning the BTS Services

This describes how to use an MS to test whether the BTS supports CS services and PS services.

4.6 Checking the BTS Environment Alarms

This describes how to check the BTS environment alarms. It also describes how to monitor the

operating environment of the BTS.

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4.1 Starting the LMT

You can directly log in to the LMT, or log in to the LMT through the M2000 client.

Context

CAUTION

Do not modify the system time when the LMT application is running. Otherwise, critical errors

may occur on the system. If you have to modify the server time, stop the LMT application first.

The default user name and password for the first login are both admin. After you log in to the

system for the first time, you are required to change the password. The new password should

comply with the default password policy.

Procedure

lDirectly log in to the LMT.

1. Choose Start > All Programs > Huawei Local Maintenance Terminal >

BSC6000V900B008Cxx > BSC6000 Local Maintenance Terminal. The BSC6000

Local Maintenance Terminal window is displayed, as shown in Figure 4-1.

–If you can find the target BSC for login from the BSC Name drop-down list, go

to Step 5.

–If you cannot find the target BSC for login from the BSC Name drop-down list,

go to Step 2.

Figure 4-1 Login dialog box of the BSC6000 Local Maintenance Terminal

2. Click . The BSC Management dialog box is displayed, as shown in Figure

4-2.

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Figure 4-2 BSC Management dialog box

3. Type the IP address of the BSC, the name of the BSC, and the remarks (optional) in

corresponding fields. Then, click Add.

4. Click Close to return to the Login dialog box, as shown in Figure 4-1.

5. Type the user name and the password in the Name and Password text boxes. Select

the BSC name from the BSC Name drop-down list, and set User Type to Local

User. Then, click OK.

lLog in to the BSC LMT through the M2000 client.

1. Choose Start > All Programs > iManager M2000 Client > M2000 Client.

The Login dialog box is displayed, as shown in Figure 4-3.

Figure 4-3 Login dialog box of the M2000 client

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2. Enter user name in User Name, enter the password in Password, and enter IP address

of the server in Server. Click Login.

3. In the iManager M2000 Mobile Element Management System window, choose

Topology > Main Topology, as shown in Figure 4-4. Main Topology is displayed

on the left side of the dialog box.

Figure 4-4 iManager M2000 Mobile Element Management System window

4. Choose Physical Root on the Main Topology tab page, right-click the BSC that the

BTS belongs to, and choose Maintenance Client from the displayed shortcut menu.

The BSC6000 Local Maintenance Terminal window is displayed.

----End

4.2 Checking the Transmission and Networking

This describes how to check the transmission and networking. The purpose of checking the

transmission and networking is to ensure that the BTS3900A transmission cables and hardware

are correctly installed. The items to be checked consist of the transmission between the BBU

and the BSC, the transmission between the BBU and the RFU, the transmission between the

cascaded BTSs, and the transmission between the BTSs in ring topology.

4.2.1 Checking the Transmission Between the RRU and the BBU or Between the BBU and the

BSC on the LMT

This describes how to check the transmission between the BBU and the BSC and the transmission

between the BBU and the RFU.

4.2.2 Checking the Transmission Between Cascaded BTSs

This describes how to check the transmission between cascaded BTSs when there are cascaded

BTSs on site. The following description takes the level 3 cascaded BTSs as an example, and

describes how to check the transmission between cascaded BTSs.

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4.2.3 Checking the Transmission Between BTSs in Ring Topology

This describes how to check the transmission between BTSs in ring topology. The following

description is based on three BTSs in ring topology.

4.2.1 Checking the Transmission Between the RRU and the BBU or

Between the BBU and the BSC on the LMT

This describes how to check the transmission between the BBU and the BSC and the transmission

between the BBU and the RFU.

Procedure

Step 1 Choose BSC Maintenance > Maintain Transmission and Signaling > Maintain LAPD

Link on the LMT.

The Maintain LAPD Link dialog box is displayed.

Step 2 Select the link and site to be queried, and click Query. The result is displayed on the Query

Result window.

If... Then...

OML links and RSL links are normal End the checking task.

OML links or RSL links are faulty Check for the related alarm, for example, 1000

LAPD_OML Fault alarm. Then rectify the fault

according to the alarm help.

The possible causes of the faulty links are as

follows:

lThe BTS does not work properly.

lThe transmission cables between the BSC and the

RFU or BBU are damaged, or the ports to which

the transmission cables are connected are faulty.

NOTE

If the BTS data has just been configured on the LMT, you

should reset the BBU first. After the BBU detects the

information sent by the BSC and initiates the link setup

procedure, the OML link can be detected.

----End

Example

lCheck whether the OML link between the BBU and the BSC is normal. If the state of the

OML link is normal, the BBU is properly connected to the BSC, as shown in Figure 4-5.

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Figure 4-5 Check whether the link between the BBU and the BSC is normal

lCheck whether the RSL link between the BBU and the RFU is normal. If the state of the

RSL link is normal, the BBU is properly connected to the RFU, as shown in Figure 4-6.

Figure 4-6 Check whether the link between the BBU and the RFU is normal

4.2.2 Checking the Transmission Between Cascaded BTSs

This describes how to check the transmission between cascaded BTSs when there are cascaded

BTSs on site. The following description takes the level 3 cascaded BTSs as an example, and

describes how to check the transmission between cascaded BTSs.

Prerequisite

lThe physical connection between cascaded BTSs on the BTS side is complete.

lThe BTS is in TDM or HDLC transmission mode.

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Context

Figure 4-7 shows the cascaded BTSs in the BSC6000 Local Maintenance Terminal window.

Figure 4-7 Cascaded BTSs on the LMT

Procedure

Step 1 Check whether cascaded BTSs are configured on the LMT.

If... Then...

Cascaded BTSs are configured Go to Step 2.

Cascaded BTSs are not configured See the BSC Initial Configuration Guide to configure

the BTSs.

Step 2 In the left pane of the BSC6000 Local Maintenance Terminal window, select the level 2 BTS

and level 3 BTS respectively. Check whether each board on the Site Device Panel tab ipage s

displayed in green, as shown in Figure 4-8.

lIf the board is displayed in green, you can infer that the board is functional. End this task.

lIf the board is not displayed in green, you can infer that the transmission between cascaded

BTSs is abnormal. Go to Step 3.

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Figure 4-8 Site Device Panel tab page

Step 3 On the BTS side, check the physical connection between the BBU of the level 1 BTS and BBU

of the level 2 BTS. Normally, the T1 of the first E1/T1 of the level 2 BTS should be connected

to the R2 of the second E1/T1 of the level 1 BTS, and the R1 of the first E1/T1 of the level 2

BTS should be connected to the T2 of the second E1/T1 of the level 1 BTS.

lIf the link is normal, the status of the LIU1 LED on the level 1 BTS and the LIU0 LED on

the level 2 BTS changes from ON disconnected to OFF connected.

lIf the link is still not normal, contact Huawei technical support engineers on the BTS side

for troubleshooting.

Step 4 On the BTS side, see Step 3 to check the physical connection between the BBU of the level 2

BTS and BBU of the level 3 BTS.

----End

4.2.3 Checking the Transmission Between BTSs in Ring Topology

This describes how to check the transmission between BTSs in ring topology. The following

description is based on three BTSs in ring topology.

Prerequisite

The physical connection between BTSs in ring topology on the BTS side is complete.

Context

lFigure 4-9 shows the connection between BTSs in ring topology. A, B, C, and D show the

positions where the link may be broken during the ring topology transmission.

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Figure 4-9 Connection between ring topology BTSs

BSC

BTS0 BTS1 BTS2

A B C

lIn this document, set the forward port to port 0 and reverse port to port 1.

Procedure

Step 1 Check whether of BTSs in ring topology are configured on the LMT.

If... Then...

The ring topology is configured Go to Step 2.

The ring topology is not configured Configure the ring topology. For details, see the BSC

Initial Configuration Guide.

Step 2 In the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance > Maintain

Site > Maintain Ring Network, and the Maintain Ring Network dialog box is displayed.

Step 3 In the Setting text box, select Site Type and level 2 BTS, and click Query. The query results

are displayed in the Result area, as shown in Figure 4-10. Port 0 serves as the working port.

Query Result shows Ring Topology Parameter Query Success. The query result indicates

that the link setup is successful and the OML receives the related data configuration.

Figure 4-10 Maintain Ring Network dialog box

Step 4 Check the switchover of the forward ring port and the reverse ring port on the LMT.

1. In the Query Result area, right-click the level 2 BTS. A dialog box is displayed. Click

Switch. The Confirm dialog box is displayed, as shown in Figure 4-11.

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Figure 4-11 Confirm dialog box

2. ClickYes, the Switchover Success dialog box is displayed. The level 2 BTS and level 3

BTS reset automatically.

3. After the level 2 and level 3 BTS are reset, query the information about the ring topology

of the level 2 and level 3 BTSs. Figure 4-12 shows the query result. The level 3 BTS is

successfully connected in the reverse direction, and the working port is changed from port

0 to port 1. You can infer that the BTS can perform the switchover from the forward ring

port to the reverse ring port.

Figure 4-12 Result of the ring topology switchover (1)

Step 5 Disconnect the BTSs in ring topology manually, and check the automatic switchover of BTSs

in ring topology. When the physical connection between BTSs in ring topology is disconnected,

the lower-level BTS at the disconnected point works in the reverse link, and the upper-level BTS

works in the forward link.

1. On the BTS side, disconnect the transmission cable between the level 1 BTS and level 2

BTS. The level 2 BTS resets automatically.

2. After the reset of the level 2 BTS is complete, see Step 2 and Step 3 to query the information

about ring topology. Figure 4-13 shows the query result. The working port of the level 2

BTS is changed from port 0 to port 1. You can infer that the automatic switchover of the

lower-level BTS is complete.

Figure 4-13 Result of the ring topology switchover (2)

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CAUTION

In normal situations, after Step 4 or Step 5 is performed, the cascaded BTSs will automatically

switch over to the forward link. If the BTSs fail to switch over to the forward link automatically,

check the connections of the transmission cables, for example, the connections of the TX and

RX ends of the E1 cable.

----End

4.3 Checking Software Version and Data Configuration

This describes how to check software version and data configuration to ensure the correctness

of the software version and configuration data. The items to be checked are the configuration

and status of the board, the software version information, and the consistency between the

hardware installation and the data configuration.

4.3.1 Checking the Board Configuration and Status on the LMT

This describes how to check the configuration and status of the BTS boards.

4.3.2 Checking the Current Software Version on the LMT

This describes how to check the current software version of the boards and modules of the BTS.

4.3.3 Checking the Consistency Between Hardware Installation and Data Configuration

This describes how to check the consistency between hardware installation and data

configuration. The consistency is confirmed by checking the configuration and board status on

the LMT.

4.3.1 Checking the Board Configuration and Status on the LMT

This describes how to check the configuration and status of the BTS boards.

Procedure

Step 1 Click Site Device Panel to check the configured boards, as shown in Figure 4-14.

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Figure 4-14 Site Device Panel tab page

Step 2 Check the status of boards: The green color indicates that the board is Normal. The red color

indicates that the board is Faulty. The white color indicates that the board is Passive, that is,

the board has no input power.

Step 3 Check the board status further: Right-click the board to be queried, and then choose Query

Board Information from the shortcut menu.

The Query Board Information dialog box is displayed, as shown in Figure 4-15.

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Figure 4-15 Query Board Information dialog box

Step 4 Check whether Board State is Actively Normal in the Query Board Information dialog box.

If the status is Faulty, go to Step 5 to check the alarm information.

Step 5 See 4.4 Checking the Alarm Information of the BTS (on the LMT) to check the alarm

information and clear the alarm according to the BSS Alarm Reference.

----End

4.3.2 Checking the Current Software Version on the LMT

This describes how to check the current software version of the boards and modules of the BTS.

Procedure

Step 1 In the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance > Query

Board Running Software Version.

The Query Board Running Software Version dialog box is displayed.

Step 2 Select BTS3900/BTS3900A under Site Type, and select the site to be queried under Candidate

Sites, and then add the site to the Selected Sites area. Click Start to query the software version

of the BTS3900/BTS3900A boards, as shown in Figure 4-16.

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Figure 4-16 Query Board Running Software Version dialog box

Step 3 If the software version is correct, end this task. If the software version is incorrect, update the

software version through the loading and activation function of the LMT. For details, see the

BSC LMT User Guide.

----End

4.3.3 Checking the Consistency Between Hardware Installation and

Data Configuration

This describes how to check the consistency between hardware installation and data

configuration. The consistency is confirmed by checking the configuration and board status on

the LMT.

Context

lCPRI connections: The port numbers SFP0 to SFP5 in the RXU topological structure area

on the LMT correspond to the ports CPRI0 to CPRI5 on the panel of the BBU.

lSlots for the RFUs: On the LMT, the RFUs are configured in subrack 3. The slot numbers

of the RFUs are based on the configuration sequence of the TRXs, starting from slot 0. In

actual installation, the installation slot of the RFU is determined by the actual requirements.

lThe relations between the data configuration and the physical connections of monitoring

boards connected to RS485 ports are described as follows:

–Figure 4-17 shows the relation between data configuration and physical connection of

the BTS3900 monitoring boards.

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Figure 4-17 Relation between data configuration and physical connection of the

BTS3900 monitoring boards

Monitoring Port

on the GTMU

Relation Between Data Configuration and Physical

Connection

MON0 In subrack 2, the DEMU in slot 0, DPMU in slot 2, FMUs in slot

8 and 9, and GATM in slot 16 are all connected to the MON0 port

on the GTMU physically. Physical connections: The monitoring

signal cable connects the MON0 port on the GTMU and one

monitoring board, and the other monitoring boards are connected

to this board in cascaded mode.

MON1 In subrack 2, the DEMU in slot 1, DPMU in slot 3, FMUs in slot

10 and 11, GATM in slot 17 are all connected to the MON1 port

on the GTMU physically. Physical connections: The monitoring

signal cable connects the MON1 port on the GTMU and one

monitoring board, and the other monitoring boards are connected

to this board in cascaded mode.

–Figure 4-18 shows the relation between data configuration and physical connection of

the BTS3900A monitoring boards.

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Figure 4-18 Relation between data configuration and physical connection of the

BTS3900A monitoring boards

Monitoring Port

on the GTMU

Relation Between Data Configuration and Physical

Connection

MON0 In subrack 2, the DEMU in slot 0, DPMU or APMU in slot 2,

DTCU in slot 6, FMUs or FMUAs in slot 8 and 9, and GATM in

slot 16 are all connected to the MON0 port on the GTMU

physically. Physical connections: The monitoring signal cable

connects the MON0 port on the GTMU and one monitoring

board, and the other monitoring boards are connected to this board

in cascaded mode.

MON1 In subrack 2, the DEMU in slot 1, DPMU or APMU in slot 3,

DTCU in slot 7, FMUs or FMUAs in slot 10 and 11, and GATM

in slot 17 are all connected to the MON1 port on the GTMU

physically. Physical connections: The monitoring signal cable

connects the MON1 port on the GTMU and one monitoring

board, and the other monitoring boards are connected to this board

in cascaded mode.

NOTE

lConnection between the MON0 port and the two FMUs or FMUAs: The FMU or FMUA in slot

9 is connected to the MON0 port through the FMU or FMUA in slot 8.

lConnection between the MON1 port and the two FMUs or FMUAs: The FMU or FMUA in slot

11 is connected to the MON1 port through the FMU or FMUA in slot 10.

lA maximum of two DEMUs, DPMUs, APMUs, DTCUs, and GATMs can be configured for each

BTS, while a maximum of four FMUs or FMUAs can be configured.

Procedure

Step 1 In the BSC6000 Local Maintenance Terminal window, click the Site Device Panel tab page

to check the board configuration of the BTS.

Step 2 Check the boards status. If the configured boards are operational, the boards are shown in green,

as shown in Figure 4-19. If the boards are shown in red, the boards are faulty.

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Figure 4-19 Site Device Panel tab page

Step 3 Check board status further: Right-click the board to be queried, and then choose the Query

Board Information dialog box from the shortcut menu. The Query Board Information dialog

box is displayed.

Step 4 Check whether the Board State is Active Normal in the Board Information tab page, as shown

in Figure 4-20.

lIf it is Active Normal, the hardware installation and data configuration of the boards are

consistent.

lIf it is Faulty, check for the related alarms. For details about how to handle the alarms, see

the BSS Alarm Reference.

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Figure 4-20 Query Board Information dialog box

TIP

If... Then...

The number of BBUs installed is different from the

number of BBUs configured

The system reports E1 Local Alarm.

More RFUs are installed than those configured The system reports SFP Port Inconsistency

Alarm.

Fewer RFUs are installed than those configured The system reports SFP Port Inconsistency

Alarm and TRX Communication Alarm.

A board other than the BBU and RFU is configured but

not installed.

The system reports **** Communication

Alarm, such as Fan Subassembly

Communication Alarm and PMU

Communication Alarm.

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If... Then...

A board other than the BBU and RFU is installed but

not configured

No alarm is reported.

----End

4.4 Checking the Alarm Information of the BTS (on the

LMT)

This describes how to check the alarm information of the BTS on the BSC6000 Local

Maintenance Terminal. If an alarm is generated, you need clear the alarm based on the

suggestions in the BSS Help System.

Procedure

Step 1 Choose BTS in the navigation bar on the left pane of the BSC6000 Local Maintenance

Terminal. In the displayed Site Device Panel tab page, check whether alarms related to the

BTS boards exist. Check the status of boards: The green color indicates that the board is

Normal. The red color indicates that the board is Error, and an alarm exists. Figure 4-21 shows

the Site Device Panel tab page.

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Figure 4-21 Site Device Panel tab page

If... Then...

No alarm is generated Repeat 1 to check the alarm information of other BTSs.

An alarm is generated Go to 2. Check the alarm generated on this BTS through Alarm

Maintenance. Clear the alarm based on the troubleshooting

suggestions.

Step 2 Alarm maintenance: Check the alarms of the BTS.

1. Choose Alarm Maintenance > Browse Alarm. The Browse Alarm dialog box is

displayed.

2. Right-click an alarm, and choose Filter Alarms... from the shortcut menu. The Filter

Alarm Condition dialog box is displayed, as shown in Figure 4-22.

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Figure 4-22 Filter Alarm Condition dialog box

3. Choose the Site to be queried, and click OK.

4. Double-click an alarm. The Alarm Detail Information dialog box is displayed, as shown

in Figure 4-23.

Figure 4-23 Alarm Detail Information dialog box

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5. Click Alarm Detail, and the BSS Help System is displayed, as shown in Figure 4-24. Handle

the alarm according to the BSS Alarm Reference.

Figure 4-24 BSS Help System

----End

4.5 Commissioning the BTS Services

This describes how to use an MS to test whether the BTS supports CS services and PS services.

Prerequisite

lThe transmission between the BSC and the BTS is normal, and the transmission between

the BSC and the LMT is normal.

lThe current software version and data configuration are correct.

lNo alarm related to disruption of BTS services is reported on the LMT.

4.5.1 Testing the CS Services

This describes how to test the CS services by making test calls between two MSs or between an

MS and a PSTN phone.

4.5.2 Commissioning PS Services

This describes how to commission PS services by website browsing and file downloading

through an MS. A laptop is required to monitor the commissioning. You need to commission

only the BTS that is configured with the GPRS or EGPRS services.

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4.5.1 Testing the CS Services

This describes how to test the CS services by making test calls between two MSs or between an

MS and a PSTN phone.

Prerequisite

lTwo test MSs which support GSM are registered with the HLR.

lThe logical cells to be checked are activated.

lThe BSC functions properly.

Procedure

Step 1 Power on one test MS, and check that the MS automatically searches for the GSM network.

If... Then...

The testing MS fails to find the GSM

network

Check that the test MS is configured with the SIM

card and the SIM card supports authentication

and encryption.

The test MS finds the GSM network Go to Step 2.

Step 2 Lock the testing MS on a frequency in a logical cell under the BTS.

If... Then...

The test lasts at least 40n minutes (n is the

number of carriers)

Go to Step 3. Conduct the call test on a special

TCH.

The test lasts less than 40n minutes Go to Step 4. Conduct the call test directly.

Step 3 Set the state of the TRX TCH.

1. On the LMT, choose BTS Maintenance > Modify Administrative State. The Modify

Administrative State dialog box is displayed, as shown in Figure 4-25.

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Figure 4-25 Modify Administrative State dialog box

2. Change the status of all the TRX TCHs in the cell from Unlocked to Locked. If the operation

succeeds, the Succeeded in modifying the administrative state. message is displayed in the

Operation Result area.

3. Lock the testing MS on a specific frequency. Change the state of one or two TCHs on the

frequency from Locked to Unlocked. Then, conduct the call tests on this TCH.

Step 4 Conduct the call test as follows:

1. Make a call from one MS to the other, and hook on after the conversation.

2. Make a call from one MS to a PSTN phone, and hook on after the conversation.

3. Make a call from a PSTN phone to one MS, and hook on after the conversation.

NOTE

lIt is recommended that each type of test calls be conducted for more than five times to ensure the results.

lIf time permits, it is recommended that one call test be conducted for each the channels of all the TRXs.

For detailed operations, see Step 3.

Step 5 Ensure that all calls are successful, the conversion is normal, and voice quality is clear.

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If... Then...

Mobile-originated call succeeds 1. Check the LEDs and alarms. If an alarm is

generated on the BTS side, clear the alarm.

2. If an alarm is generated on the BSC side,

contact BSC technical support engineers to

handle it.

3. After the fault is rectified, go to Step 1 to test

the CS services for another time.

Mobile-originated call succeeds, and

mobile-terminated call fails

The data configuration on the BSC side is

improper. Contact BSC technical support

engineers for troubleshooting.

Step 6 Test short message service (SMS) as follows: Use two testing MSs to send SMS messages to

each other, and ensure that all the SMS messages are successfully sent and received.

Step 7 Choose a proper operation procedure based on actual conditions.

If... Then...

Step 3 is performed 1. Repeat Step 3 through Step 6 to verify the CS services of other

TCHs on the same frequency.

2. Repeat steps Step 2 through Step 6 to test the CS services in other

logical cells at the site.

Step 3 is not performed Repeat Step 2, and Step 4 through Step 6 to verify the CS services

in other logical cells at the site.

----End

4.5.2 Commissioning PS Services

This describes how to commission PS services by website browsing and file downloading

through an MS. A laptop is required to monitor the commissioning. You need to commission

only the BTS that is configured with the GPRS or EGPRS services.

Prerequisite

lOne test MS that supports GSM and PS services is registered with the HLR.

lThe BTS cell to be checked is configured with the GPRS or EGPRS services.

lThe logical cell to be checked is activated.

lThe computer and the BSC work properly.

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Procedure

Step 1 Activate the GPRS or EGPRS data service with the MS. Then, commission PS services through

multi-service testing. The PS service test involves sending multimedia message, browsing

websites, and downloading files.

Step 2 Check whether the MS can successfully send multimedia messages, browse webpages, and

download files.

If... Then...

One of the three PS service tests is

successful

The hardware on the BTS side meets the

requirements for PS services.

All the three PS service tests fail Check whether the test MS works properly, for

example, the test MS is configured with the SIM

card or the SIM card supports authentication and

encryption.

Step 3 Repeat Step 1 through Step 2 to test PS services in other cells under the BTS.

----End

4.6 Checking the BTS Environment Alarms

This describes how to check the BTS environment alarms. It also describes how to monitor the

operating environment of the BTS.

4.6.1 BTS Environment Alarm Types

This describes the various types of environment alarms of the BTS. The alarms consist of the

fire alarm, smoke alarm, infrared alarm, water alarm, temperature alarm, humidity alarm, air-

conditioner alarm, door status alarm, and burglar alarm.

4.6.2 Checking the Environment Monitoring Alarms on the LMT

This describes how to check the environment monitoring alarms. Checking the environment

monitoring alarms is implemented through simulating the environment factors that may generate

alarms, thus checking whether the physical connections of the BTS can report and clear the

alarms. Note that the BTS technical support engineers should assist in checking the Boolean

environment monitoring alarm.

4.6.1 BTS Environment Alarm Types

This describes the various types of environment alarms of the BTS. The alarms consist of the

fire alarm, smoke alarm, infrared alarm, water alarm, temperature alarm, humidity alarm, air-

conditioner alarm, door status alarm, and burglar alarm.

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NOTE

lCritical alarm: devices or resources may be unusable, and restoration should be performed at once.

lMajor alarm: The QoS of devices or resources severely deteriorates, and measures should be taken as

soon as possible.

lThe thresholds of temperature alarm and humidity alarm are subject to the local climate and terrain

conditions and should be specified on the basis of the field requirements.

Fire Alarm

The fire alarm is the environment alarm generated when the equipment room is on fire. This is

a critical alarm.

Smoke Alarm

The smoke alarm is an environment alarm generated when the smoke density in the equipment

room reaches a predefined threshold. This is a critical alarm.

Infrared Alarm

The infrared alarm is an environment alarm generated when an infrared facility is taken into the

equipment room or is in the infrared detection range of the cabinet. This is a major alarm.

Water Alarm

The water alarm is an environment alarm generated when water immersion occurs in the

equipment room. This is a major alarm.

Temperature Alarm

The temperature alarm consists of the overtemperature alarm and the undertemperature alarm.

This is a major alarm.

lThe overtemperature alarm is generated when the ambient temperature is higher than the

predefined upper threshold of the temperature.

lThe undertemperature alarm is generated when the ambient temperature is lower than the

predefined lower threshold of the temperature.

Humidity Alarm

The humidity alarm consists of the high humidity alarm and the low humidity alarm. This is a

major alarm.

lThe high humidity alarm is generated when the environment humidity is higher than the

predefined upper threshold of the humidity.

lThe low humidity alarm is generated when the environment humidity is lower than the

predefined lower threshold of the humidity.

Air-Conditioner Alarm

The air-conditioner alarm is generated when the air-conditioner is not running properly or the

AC power supply is not normal. This is a major alarm.

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Door Status Alarm

The door status alarm is an environment alarm generated when the door of the equipment room

or the door of the cabinet is opened. This is a major alarm.

Burglar Alarm

The burglar alarm is generated when the infrared alarm or door status alarm occurs. This is a

critical alarm.

4.6.2 Checking the Environment Monitoring Alarms on the LMT

This describes how to check the environment monitoring alarms. Checking the environment

monitoring alarms is implemented through simulating the environment factors that may generate

alarms, thus checking whether the physical connections of the BTS can report and clear the

alarms. Note that the BTS technical support engineers should assist in checking the Boolean

environment monitoring alarm.

Context

The BTS3900 GSM supports the monitoring boards of the DEMU, DPMU, FMU, and GATM.

Besides the monitoring boards of the BTS3900 GSM, the BTS3900A GSM also supports the

APMU, FMUA, and DTCU. Table 4-1 describes the detailed configuration.

Table 4-1 Monitoring boards of the BTS3900 and the BTS3900A

Slot in

Subrack 2

0 1 2 3 4 5 6 7 8 9 1

BTS3900

GSM

- - - - F

- - - - G

BTS3900A

GSM

-- D

-- - - G

Procedure

lCommissioning the Boolean alarm (Door Open Alarm of the DEMU)

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Alarm switch enabled and alarm switch valid level are required to be noted when checking

the Boolean alarm both on the SMT and the LMT. The following part takes the Door Open

Alarm of the DEMU as an example to describe the procedure for testing the Boolean alarm.

NOTE

lTrigger conditions of the Door Open Alarm: When the cabinet door of the BTS is open, the

DEMU reports Door Open Alarm; when the cabinet door of the BTS is closed, the Door Open

Alarm is cleared.

lDisable the Door Open Alarm and configure the alarm valid level: When the Door Open

Alarm is disabled, the DEMU does not report the Door Open Alarm. In other words, the Door

Open Alarm is shielded. Alarm valid level configuration specifies the valid level of the door

sensor alarm, which is determined by the attribute of the field Gate Magnetism.

lOn the LMT, choose Alarm Maintenance > Browse Alarm. Check the alarm information in

the displayed Browse Alarm dialog box.

1. Check whether the Door Open Alarm can be reported normally by opening the

cabinet door of the BTS and be cleared normally by closing the cabinet door of the

BTS.

–If the alarm can be reported and cleared normally, end the checking task.

–If the alarm cannot be reported, go to Step 2 to check the data configuration of the

Gate Magnetism.

TIP

If the valid level of the door sensor alarm on site is inconsistent with the valid level of the door

sensor alarm based on the data configuration, the reported alarms are opposite. For example,

if the valid level of the door sensor alarm on site is high and the configured valid level is low,

then:

When the cabinet door of the BTS is closed, the DEMU reports the Door Open Alarm; when

the cabinet door of the BTS is open, the Door Open Alarm is cleared.

2. In the BSC6000 Local Maintenance Terminal window, right-click the site to be

queried and choose Configure Site Board Attributes. The Configure Site Board

Attributes dialog box is displayed.

3. Click Configure Site Board Attributes, the Site Device Attributes dialog box is

displayed.

4. Right-click DEMU, choose Configure Site Board Attributes. The Basic Attributes

of Site Board dialog box is displayed.

5. Click the Configure Site Board Attributes tab. Then set Board Parameter

Configuration Enabled to Yes. Click Special Alarm Switch Enabled to check

whether Gate Magnetism(Disabled) is selected, as shown in Figure 4-26.

–In normal conditions, the check box Gate Magnetism(Disabled) is deselected,

which means it is enabled and the Door Open Alarm is reported once the alarm is

generated.

–If the check box Gate Magnetism(Disabled) is selected, deselect the check box.

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Figure 4-26 Basic Attributes of Site Board (1)

6. Click Special Alarm Switch Valid Level Configuration in the Basic Attributes of

Site Board dialog box. Check whether the configuration of the Gate Magnetism(Low

Level) is consistent with the actual alarm switch valid level of the Gate Magnetism,

as shown in Figure 4-27. If the alarm switch valid level of the field Gate Magnetism

is high level, then

–In normal conditions, the check box Gate Magnetism(Low Level) is deselected,

which means the Door Open Alarm is reported at a high level.

–If the check box Gate Magnetism(Low Level) is selected, deselect the check box.

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Figure 4-27 Basic Attributes of Site Board (2)

7. When the checking is complete, check whether the Door Open Alarm can be reported

normally by opening the cabinet door of the BTS and be cleared normally by closing

the cabinet door of the BTS.

–If the alarm can be reported and cleared normally, end the checking task.

–If the alarm cannot be reported, reconnect the related monitoring signal cable. For

details, see the BTS3900 Quick Installation Guide or the BTS3900A Quick

Installation Guide.

lCommissioning the alarm reported through the RS485 port (temperature monitoring alarm

of the DTCU)

The following part takes the temperature monitoring of the DTCU as an example to describe

the commissioning of the temperature monitoring alarm of the monitoring board.

NOTE

lTrigger conditions of Temperature Too High Alarm: When the actual temperature of DTCU exceeds

the High Temperature Alarm Threshold, the DTCU reports the Temperature Too High Alarm.

lTrigger condition of Temperature Too Low Alarm: When the actual temperature of DTCU exceeds

the Low Temperature Alarm Threshold, the DTCU reports the Temperature Too Low Alarm.

lOn the LMT, choose Alarm Maintenance > Browse Alarm. Check the alarm information in the

displayed Browse Alarm dialog box.

1. On the LMT, query the ambient temperature of the BTS DTCU.

(1) In the BSC6000 Local Maintenance Terminal window, select the site to be

queried. Right-click the monitoring board to be queried on the Site Device

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Panel tab page and choose Query Board Information. The Query Board

Information dialog box is displayed.

(2) Click the Running Parameter tab, and then click Query on the Running

Parameter tab. The query is successful, and the running status of the board is

displayed in the dialog box. The current Environment Temperature is

28.0℃, as shown in Figure 4-28.

Figure 4-28 Query Board Information dialog box

2. On the LMT, set the High Temperature Alarm Threshold to a value lower than the

normal temperature to trigger the alarm.

(1) In the BSC6000 Local Maintenance Terminal window, right-click the site to

be queried and choose Configure Site Board Attributes. The Configure Site

Board Attributes dialog box is displayed.

(2) Click Configure Site Board Attributes, the Site Device Attributes dialog box

is displayed.

(3) Right-click DTCU and choose Configure Site Board Attributes. The Basic

Attributes of Site Board dialog box is displayed.

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(4) Click Configure Site Board Attributes tab. Then set Board Parameter

Configuration Enabled to Yes and set High Temperature Alarm Threshold

to 25.0, as shown in Figure 4-29.

Figure 4-29 Basic Attributes of Site Board (3)

(5) Click OK to complete the setting of the temperature alarm threshold.

3. Check the alarm information of the DTCU. For details, see 4.4 Checking the Alarm

Information of the BTS (on the LMT). If the DTCU reports Temperature Too

High Alarm, the ambient temperature alarm can be reported normally. If the alarm

cannot be reported normally, reconnect the related monitoring signal cables. For

details, see the Quick Installation Guide.

4. Set High Temperature Alarm Threshold again to clear Temperature Too High

Alarm. For details, see Step 2.

----End

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5 Commissioning the BTS (Transmission

Unavailable)

About This Chapter

This describes how to commission the BTS in the transmission unavailable scenario. The

commissioning of the BTS consists of two phases. In the initial phase of the commissioning, the

transmission cable between the BSC and the BTS is not properly connected. Commission the

BTS at the local end. In the later phase of the commissioning, the transmission cable between

the BSC and the BTS is properly connected. Commission the BTS on the BSC side.

5.1 Starting the Site Maintenance Terminal

This describes how to start the SMT. To start the SMT, you need to set the IP address of the

SMT PC, connect the SMT PC to the BTS, and then log in to the SMT.

5.2 Configuring the Basic Data of the BTS

This describes how to configure the basic data of the BTS such as the BTS boards and logical

objects of the site. If the commissioning is performed on the BTS side, other commissioning

tasks can be performed only after the configuration of the basic data of the BTS.

5.3 Checking the Active Software Version on the SMT

This describes how to check the software versions of the boards and modules in the BTS in the

Site Maintenance Terminal System window.

5.4 Checking the Transmission Between the BBU and RFU on the BTS Side

This describes how to check the transmission between the BBU and the RFU on the BTS side.

By checking the link status of the BBU and RFU, you can rectify the fault caused by abnormal

connection, thus ensuring normal communication between the BBU and the RFU.

5.5 Checking the Running Status of the BTS

This describes how to check the running status of the BTS. Check the running status of the BTS

involves checking the status of LEDs and alarm information on the SMT.

5.6 Checking the Hardware Connection of the BTS

This describes how to check the hardware connection of the BTS by checking the connection

of power cables, grounding cables, and all kinds of signal cables.

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5.1 Starting the Site Maintenance Terminal

This describes how to start the SMT. To start the SMT, you need to set the IP address of the

SMT PC, connect the SMT PC to the BTS, and then log in to the SMT.

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC

This describes how to set the IP address of the SMT PC to the same network segment as the IP

address (192.168.0.72/255.255.255.0) of the BTS.

5.1.2 Locally Connecting the SMT PC to the BTS

This describes how to connect the Site Maintenance Terminal (SMT) PC to the ETH port on the

main control module of the BTS through an Ethernet cable. After they are connected, you can

operate and maintain the BTS on the SMT.

5.1.3 Logging in to the BTS at the Local End

This describes how to log in to the BTS. You can run the SMT to directly log in to the BTS at

the local end.

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC

This describes how to set the IP address of the SMT PC to the same network segment as the IP

address (192.168.0.72/255.255.255.0) of the BTS.

Prerequisite

The TCP/IP protocol is installed on the SMT PC.

Procedure

Step 1 To set the IP address of the PC, perform the following steps where the Windows XP operating

system is taken as an example: On Windows XP, choose Start > Setting > Control Panel .

Step 2 Double-click Network Connections in the displayed Control Panel window. Right-click Local

Area Connection in the displayed dialog box.

Step 3 Choose Properties from the shortcut menu. The Local Area Connection Properties dialog

box is displayed.

Step 4 Select Internet Protocol (TCP/IP), and click Properties. The Internet Protocol (TCP/IP)

Properties dialog box is displayed.

Step 5 Select Use the following IP address.

Step 6 Enter the correct IP address, subnet mask, and default gateway. Ensure that the IP address of the

SMT PC is in the same network segment as the IP addresses (192.168.0.72/255.255.255.0) of

the BTS so that a maintenance channel on the BTS side can be established.

Step 7 Click OK to complete the settings.

----End

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5.1.2 Locally Connecting the SMT PC to the BTS

This describes how to connect the Site Maintenance Terminal (SMT) PC to the ETH port on the

main control module of the BTS through an Ethernet cable. After they are connected, you can

operate and maintain the BTS on the SMT.

Prerequisite

The IP address and subnet mask of the SMT PC are set correctly. The IP address is in the same

network segment as the IP address (192.168.0.72/255.255.255.0) of the BTS.

Procedure

Step 1 Connect the SMT PC to the BTS through an Ethernet cable. One end is connected to the ETH

port on the main control board of the basic cabinet, and the other end is connected to the Ethernet

port on the SMT PC (usually a portable PC).

Step 2 Open the MS-DOS Prompt dialog box.

lIf the PC is Windows 2000/XP operating system based, choose Start > Run on the SMT. In

the Run dialog box, run the cmd command. The MS-DOS Prompt dialog box is displayed.

Step 3 Run ping 192.168.0.72 to verify the network connection between the computer and the BTS.

NOTE

The IP address of the BTS is 192.168.0.72.

lIf the information similar to that in the following example is returned, the SMT PC and the

BBU can communicate normally.

Pinging 192.168.0.72 with 32 bytes of data:

Reply from 192.168.0.72: bytes=32 time=1ms TTL=253

Ping statistics for 192.168.0.72:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 1ms, Maximum = 1ms, Average = 1ms

lIf the SMT PC and the BBU fail to communicate, the possible reason is as follows:

–The GTMU is faulty.

–The Ethernet cable is faulty, or its connectors are loose.

–The Ethernet port on the SMT PC is faulty.

–The BTS is resetting.

–The IP address is incorrect.

----End

5.1.3 Logging in to the BTS at the Local End

This describes how to log in to the BTS. You can run the SMT to directly log in to the BTS at

the local end.

Prerequisite

lThe SMT PC is properly connected to the BTS.

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lThe latest software of the SMT is installed in the SMT PC.

Procedure

Step 1 Start the SMT.

lIf the SMT PC communicates with the BTS normally, a window is displayed, as shown in

Figure 5-1. The SMT is successfully started.

lIf the SMT PC cannot communicate with the BTS, the Communication failed dialog box

is displayed, as shown in Figure 5-2. Go to Step 2.

Figure 5-1 Site Maintenance Terminal system window

Figure 5-2 Communication failed dialog box

Step 2 Click Yes.

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The Set Communication Port Parameter dialog box is displayed, as shown in Figure 5-3.

Figure 5-3 Set Communication Port Parameter dialog box

Step 3 In the Select Communication Port area, click Network Port. In the Configure IP area, set the

IP address to 192.168.0.72.

Step 4 Click OK.

The Site Maintenance Terminal System window is displayed, as shown in Figure 5-1.

Step 5 In the Site Maintenance Terminal System window, click User, and select User Login. Enter

User Name (Omc by default) and User Password (omc by default). Logging in to the BTS

succeeds.

----End

5.2 Configuring the Basic Data of the BTS

This describes how to configure the basic data of the BTS such as the BTS boards and logical

objects of the site. If the commissioning is performed on the BTS side, other commissioning

tasks can be performed only after the configuration of the basic data of the BTS.

5.2.1 Obtaining the Site Management Rights

This describes how to obtain the site management rights. Before configuring the BTS board and

site logical objects, you must obtain the site management rights after logging into the BTS at

the local end.

5.2.2 Configuring the Boards of the BTS on the SMT

This describes how to configure the TRX boards and other boards of the BTS.

5.2.3 Configuring Logical Objects of the BTS on the SMT

This describes how to configure logical objects of the BTS. The BTS logical object configuration

consists of the cell configuration, carrier binding, and activation of cell configuration data.

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5.2.1 Obtaining the Site Management Rights

This describes how to obtain the site management rights. Before configuring the BTS board and

site logical objects, you must obtain the site management rights after logging into the BTS at

the local end.

Prerequisite

You have logged in to the BTS successfully through the SMT.

Procedure

Step 1 In the Site Maintenance Terminal System window, select Site, and double-click Site

Management Right.

The Site Management Right dialog box is displayed.

Step 2 Click Obtain. The Warning Message dialog box is displayed, as shown in Figure 5-4.

Figure 5-4 Warning message for obtaining the site management right

Step 3 Click OK, and wait for the response.

lIf the obtaining succeeds, a dialog box is displayed, as shown in Figure 5-5.

lIf the engineers are configuring or managing the BTS data on the LMT, you cannot obtain

the site management rights successfully. In this case, wait till the engineers finish the

operation on the LMT, and then repeat Step 2 and Step 3 to obtain the site management

rights.

Figure 5-5 Site Management Right dialog box

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Step 4 Click Close to close the Site Management Right dialog box.

CAUTION

After the commissioning task in the transmission unavailable scenario is complete, you should

release the site management rights. Otherwise, the BTS cannot be monitored on the LMT in

fifteen minutes.

The procedure for releasing the site management rights is as follows:

Click Release in the Site Management Right dialog box. When Releasing site management

right successfully. is displayed, click Close to close the dialog box.

----End

5.2.2 Configuring the Boards of the BTS on the SMT

This describes how to configure the TRX boards and other boards of the BTS.

Context

Table 5-1 shows the types of TRXs that can be configured on the BTS3900 GSM or BTS3900A

GSM.

Table 5-1 TRX types configured on the BTS3900 GSM or the BTS3900A GSM

BTS Type TRX Type

BTS3900 GSM DRRU, DRFU, GRRU, and GRFU

BTS3900A GSM DRRU, DRFU, GRRU, and GRFU

NOTE

The following description takes one DRFU of the CPRI0 port as an example to describe the configuration

of the TRX board. One DRFU of the CPRI0 port is configured on the first level of the SPF0 link.

Procedure

Step 1 Click Board in the navigation pane.

The Board Configuration and Board Management windows are displayed.

Step 2 Double-click Board Configuration.

The Board Configuration window is displayed, as shown in Figure 5-6.

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Figure 5-6 Board Configuration window

NOTE

In the transmission unavailable scenario, no site information is configured, thus, there is only the GTMU

in the Board Configuration window. The status of the GTMU is Active abnormal.

Step 3 Double-click GTMU.

The Topology Configuration window is displayed, as shown in Figure 5-7.

Figure 5-7 Topology Configuration window

Step 4 Click Add RRU.

Set the parameters in the Deploy DRRU dialog box, as shown in Figure 5-8. Set Card Type

to DRFU, Card No. to 0, SFP No. to 0, and Hop No. to 1. These values are taken only as an

example in this section.

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Figure 5-8 Deploy DRRU dialog box

NOTE

Card Type refers to the DRRU, DRFU, MRRU, GRRU, MRFU, or GRFU. The card number starts from

0 in sequence. The SFP number ranges from 0 to 5 and each number refers to the SFP port where the board

is configured. The hop number ranges from 1 to 6 and each number refers to the level of the TRXs under

the same SFP number.

Step 5 ClickOK. The configuration of the RF module is complete.

Figure 5-9 shows the Topology Configuration window.

Figure 5-9 Topology Configuration window

Step 6 Click Close to return to the Board Configuration window. Right-click the slot where the board

is configured, and choose the board to be configured from the shortcut menu.

Configure the APMU/DPMU, FMU, and GATM as shown in Figure 5-10.

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Figure 5-10 Board Configuration window

Step 7 Set the parameters: On the SMT, the parameter of DEMU cannot be set. The parameters of

DEMU and DPMU are set by default, therefore, no parameter setting is required.

Step 8 Configure the APMU: The APMU is added for the BTS3900A GSM. Perform the following

steps to configure the new types of APMU, such as APM100 and APM30.

1. Click Board in the navigation pane.

The Board Configuration and Board Management windows are displayed.

2. Double-click Board Management. The Board Management window is displayed.

3. In the Board Management window, right-click APMU, and then click Parameter

Management.

The Parameter Management dialog box is displayed.

4. In the Parameter Management dialog box, click Parameter Set. Select APM30 or other

boards under APMU Type according to the configuration data, as shown in Figure 5-11.

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Figure 5-11 Parameter Management dialog box

Step 9 Click Close to end the board configuration of the BTS.

----End

5.2.3 Configuring Logical Objects of the BTS on the SMT

This describes how to configure logical objects of the BTS. The BTS logical object configuration

consists of the cell configuration, carrier binding, and activation of cell configuration data.

Context

NOTE

The following part describes the configuration and binding of carriers based on one DRFU configured with

two carriers.

Procedure

Step 1 Add a cell. Click Site0, and double-click Site Configuration in the Function area.

The Site Configuration dialog box is displayed, as shown in Figure 5-12.

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Figure 5-12 Site Configuration dialog box (1)

Step 2 Click Site0, and then click Add Subobject. In the Object Attributes area, specify Object

No. and Object Name.

In the Object Operation area, Cell0 is added, as shown in Figure 5-13.

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Figure 5-13 Site Configuration dialog box (2)

Step 3 Bind the carrier. Click Cell0, and select the TRX to be configured in the Boardtype drop-down

list box. Set the board type to DRFU, as shown in Figure 5-14.

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Figure 5-14 Site Configuration dialog box (3)

Step 4 Click Add Subobject. In the Object Attributes area, specify Object No., Object Name, Board

No., and Pass No.. Carrier0 is added in the Object Operation area. The carrier is bound to

pass 0 of the TRX whose board number is 0, as shown in Figure 5-15. Pass 0 is also called

carrier A. The number of paths at an RFU depends on the number of carriers configured for the

RFU.

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Figure 5-15 Site Configuration dialog box (4)

Step 5 Configure the second carrier: Set Object Name to Carrier1, Board No. to 0, and Pass No. to

1, as shown in Figure 5-16. The DRFU 0 is configured with two carriers.

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Figure 5-16 Site Configuration dialog box (5)

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NOTE

lThe procedure for adding carriers for other TRX boards is the same as adding carrier for the DRFU.

lThe GRFU can be configured with 6 carriers, that is, there are 6 pass numbers ranging from 0 to 5 for

the same board number. The GRRU can be configured with 8 carriers, that is, there are 8 numbers

ranging from 0 to 7 for the same board number.

lThe GRRU has two tributaries: tributary A and tributary B. For other TRXs, there is only one tributary.

Therefore, you can configure the carrier according to the configuration data.

lThe SMT provides the self-check function. When an invalid value is specified, the User Error dialog

box is displayed, as shown in Figure 5-17.

Figure 5-17 User Error dialog box

Step 6 Click Site0.

The Set button is available. Click Set, Configuring cell succeeded is available, as shown in

Figure 5-18.

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Figure 5-18 Site Configuration dialog box (6)

Step 7 Close the dialog box.

The configured cell is displayed in the navigation pane, as shown in Figure 5-19. The data is

configured but not activated. To activate the data, go to Step 8.

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Figure 5-19 Configured cell and channels

Step 8 Choose Site0 > Site Opstart > OK. The Site Opstart dialog box is displayed, as shown in

Figure 5-20.

If... Then...

Site Opstart successfully. is displayed Click close to perform the next step.

Site startup fails 1. Repeat Step 8. If the operation succeeds, go to

Step 9. If the operation still fails, go to 8.2.

2. Check whether there is any inconsistent data

configuration. If there is, modify the inconsistent

data configuration. If the data configuration is

correct, contact the BTS technical support

engineers for troubleshooting.

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Figure 5-20 Site Opstart dialog box

Step 9 Choose Cell0 > Cell Opstart > OK. The Cell Opstart dialog box is displayed, as shown in

Figure 5-21.

If... Then...

Cell Opstart successfully. is displayed Click close to perform the next step.

Cell startup fails See Step 8 for further operation.

Figure 5-21 Cell Opstart dialog box

Step 10 The site configuration takes effect.

Step 11 Make the attributes of other TRXs take effect: Choose BT0 > BT Opstart > OK. The BT

Opstart dialog box is displayed, as shown in Figure 5-22.

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If... Then...

BT Opstart successfully. is displayed Click close to perform the next step.

BT startup fails See Step 8 for further operation.

Figure 5-22 BT Opstart dialog box

Step 12 Choose RC0 > RC Attributes Management. Specify frequency in ARFCN, and click Set.

Getting RC attributes succeeded is displayed. Click Close.

Repeat the procedure of Step 12 to set the frequencies of other TRXs. Figure 5-23 shows the

RC Attributes Management dialog box.

Figure 5-23 RC Attributes Management dialog box

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Step 13 Choose RC0 > RC Opstart > OK. The RC Opstart dialog box is displayed, as shown in Figure

5-24.

If... Then...

RC Opstart successfully. is displayed Click Close. Repeat Step 13 to make the frequency

settings of other RCs take effect.

RC startup fails See Step 8 for further operation.

Figure 5-24 RC Opstart successfully dialog box

Step 14 SFP Port Inconsistency Alarm is cleared. Since the transmission is unavailable, LAPD

Alarm persists, and the status of the GTMU is Active abnormal,

as shown in Figure 5-25.

Figure 5-25 Board Management window

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----End

5.3 Checking the Active Software Version on the SMT

This describes how to check the software versions of the boards and modules in the BTS in the

Site Maintenance Terminal System window.

Procedure

Step 1 In the left pane of the Site Maintenance Terminal System window, select Board. In the right

pane of the window, double-click Board Management.

The Board Management window is displayed, as shown in Figure 5-26.

Figure 5-26 Board Management window (1)

Step 2 Select a board or a module to be checked.

If... Then...

The DRFU is to be viewed Go to Step 3.

The GTMU, GATM, or PMU is to be viewed Go to Step 4.

Step 3 Double-click GTMU in the Board Management window. The Topology Management

window is displayed, as shown in Figure 5-27. Right-click DRFU0, and then click Board

Information. The query is successful. The Board Information dialog box is displayed, as

shown in Figure 5-28. Check the software version. If the version needs to be upgraded, reload

and activate the version, and then close the dialog box.

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Figure 5-27 Topology Management window

Figure 5-28 Board Information dialog box (1)

Step 4 Take the GTMU as an example. Right-click GTMU, and choose Board Information from the

shortcut menu.

The Board Information dialog box is displayed, as shown in Figure 5-29. Check the software

version. If the software version is not correct, upgrade the software version. For details, see the

Software Upgrade Guide.

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Figure 5-29 Board Information dialog box (2)

----End

5.4 Checking the Transmission Between the BBU and RFU

on the BTS Side

This describes how to check the transmission between the BBU and the RFU on the BTS side.

By checking the link status of the BBU and RFU, you can rectify the fault caused by abnormal

connection, thus ensuring normal communication between the BBU and the RFU.

Context

In this document, RFUs are classified into two types: DRFUs and GRFUs.

Procedure

Step 1 Check the status of the CPRI0 LED on the GTMU panel of the BBU and the status of the

CPRI0 and CPRI1 LEDs in the RFU panel.

If... Then...

All the LEDs are in the on in green

status

The communication between the CPRI0 port on

the BBU and the RFU is normal. Go to Step 4.

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If... Then...

Some LEDs are not in the on in green

status

The communication between the CPRI0 port on

the BBU and the RFU is faulty. Go to Step 2.

NOTE

The status of the LED corresponding to the CPRI port that is not in use should be OFF.

Step 2 Check the connection between the RFU and the BBU.

1. Check that one end of the CPRI signal cable is securely connected to the CPRI0 port on

the RFU, and the other end is securely connected to the CPRI port on the BBU.

2. Check the SFP male connectors at both ends of the CPRI signal cable. If the connector is

faulty, replace it.

3. If the LEDs is still in the on in green status, replace the optical module of the CPRI port.

Step 3 Check the connection between the cascaded RFUs.

1. Check that the signal cables between cascaded RFUs are securely connected to the

CPRI0 and CPRI1 ports.

2. Check the SFP male connectors at both ends of the signal cables between cascaded RFUs.

If the connector is faulty, replace it.

3. If the LEDs is still in the on in green status, replace the optical module connected to the

CPRI port.

Step 4 Repeat Step 1 through Step 3 to check the transmission between other CPRI ports on the GTMU

panel and other RFUs.

----End

5.5 Checking the Running Status of the BTS

This describes how to check the running status of the BTS. Check the running status of the BTS

involves checking the status of LEDs and alarm information on the SMT.

5.5.1 Checking the State of the BTS LEDs

To determine the running status of the BTS boards or modules, you need to check the state of

the LEDs on them. The LEDs are distributed on the following boards or modules: GTMU

(mandatory), UBFA, UPEU, RFU, GATM (optional), FAN unit, PMU, PSU (AC/DC), and PSU

(DC/DC).

5.5.2 Checking the Alarm Information of the BTS on the SMT

This describes how to check the BTS alarms on the SMT. If an alarm is generated, you need to

clear the alarm according to the handling suggestions on the SMT.

5.5.1 Checking the State of the BTS LEDs

To determine the running status of the BTS boards or modules, you need to check the state of

the LEDs on them. The LEDs are distributed on the following boards or modules: GTMU

(mandatory), UBFA, UPEU, RFU, GATM (optional), FAN unit, PMU, PSU (AC/DC), and PSU

(DC/DC).

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Prerequisite

The output power of the TRX is within the normal range, and the RFU operates properly.

Context

lThe PSU (AC/DC) that converts 220 V AC power into -48 V DC power is used when the

external 220 V AC power input is used.

lThe PSU (DC/DC) that converts +24 V AC power into -48 V DC power is used when the

external +24 V AC power input is used.

Procedure

Step 1 Check the state of the LEDs on the boards or modules in the BBU. Table 5-2 lists the normal

states of the LEDs on the boards or modules.

Table 5-2 Normal states of the LEDs on the board and modules in the BBU

Board or

Module

LED Color Normal State

GTMU RUN Green Blinking (ON for 1s and OFF for 1s)

ALM Red OFF

ACT Green ON

LIU0 to LIU3 Green LEDs LIU0 to LIU3 represent the four E1

links. If the links are connected normally, LIU

LEDs are OFF. If the links are not connected

to the BSC yet or the transmission is

unavailable, LIU LEDs are ON.

CPRI0 to

CPRI5

Green When CPRI0 to CPRI5 ports are not in use,

the LEDs are OFF. When the BBU is

normally connected to the RFU, the

corresponding LED is ON.

UBFA STATE Green Blinking (ON for 1s and OFF for 1s)

UPEU RUN Green ON

Step 2 Check the state of the LEDs on the RFU panel. Table 5-3 takes the DRFU as an example to list

the normal states of the LEDs on the RFU panel.

Table 5-3 Normal states of the LEDs on the DRFU

LED Color Normal State

RUN - Blinking (ON for 1s and OFF for 1s)

ALM - OFF

ACT - ON steady: The DRFU works properly.

VSWR Red OFF

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LED Color Normal State

CPRI0 Green If the DRFU is normally connected to the

BBU or another RFU, the LED is ON. If the

DRFU is not connected, the LED is OFF.

CPRI1 Green If the DRFU is normally connected to the

BBU or another RFU, the LED is ON. If the

DRFU is not connected, the LED is OFF.

NOTE

The LEDs on other RFUs have the same states as those on the DRFU, but the silkscreens of some LEDs

are different.

Step 3 Check the status of the LEDs on the GATM panel. Table 5-4 lists the normal status of the LEDs.

Table 5-4 Normal states of the LEDs on the GATM

LED Color Normal State

RUN Green Blinking (ON for 1s and OFF for 1s)

ACT Green ON: The AISG link is available.

Green Blinking quickly: The AISG link is in transmission

status.

ALM Red OFF

Step 4 Check the states of the LEDs on the FAN unit panel. Table 5-5 lists the normal states of the

LEDs.

Table 5-5 Normal states of the LEDs on the FAN unit

LED Color Normal State

RUN Green Blinking (ON for 1s and OFF

for 1s)

ALM Red OFF

Step 5 Check the state of the LEDs on the PMU panel. Table 5-6 lists the normal states of the LEDs

on the PMU.

Table 5-6 Normal states of the LEDs on the PMU

LED Color Normal State

RUN Green Blinking (ON for 1s and OFF

for 1s)

ALM Red OFF

Step 6 Check the state of the LEDs on the PSU (AC/DC) or PSU (DC/DC) panel. Table 5-7 lists the

normal states of the LEDs on the PSU.

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Table 5-7 Normal states of the LEDs on the PSU

PSU LED Color Normal State

PSU (AC/DC) Power input LED

(top)

Green ON

Power protection

LED (middle)

Yellow OFF

Power failure LED

(bottom)

Red OFF

PSU (DC/DC) Power input LED

(left)

Green ON

Power protection

LED (middle)

Yellow OFF

Power failure LED

(right)

Red OFF

Step 7 If the LEDs on the boards or modules are not in the normal state, check the alarm information

on the SMT and rectify the faults according to the suggestions displayed.

----End

5.5.2 Checking the Alarm Information of the BTS on the SMT

This describes how to check the BTS alarms on the SMT. If an alarm is generated, you need to

clear the alarm according to the handling suggestions on the SMT.

Procedure

Step 1 In the left pane of the Site Maintenance Terminal System window, choose Board. In the right

pane of the window, double-click Board Management.

The Board Management window is displayed, as shown in Figure 5-30.

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Figure 5-30 Board Management window

Step 2 Check the type of the board or module where alarms are generated.

If... Then...

The board or module is RFU Go to Step 3 to query the alarms.

The board or module is GTMU, UBFA, UPEU, UEIU,

GATM, or PMU

Go to Step 4 to query the alarms.

Step 3 In the Board Management window, double-click GTMU.

The Topology Management window is displayed, as shown in Figure 5-31.

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Figure 5-31 Topology Management window

Step 4 Right-click the board or module to be queried, and choose Board Alarm.

The Board Alarm Information dialog box is displayed. Click the red grid, then the details about

the alarm are displayed in the right pane, as shown in Figure 5-32.

Figure 5-32 Board Alarm Information dialog box

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NOTE

Each red grid represents an alarm.

Step 5 Perform the next operation according to the result displayed in the Board Alarm

Information dialog box.

If... Then...

No alarm is generated Close the Board Alarm Information dialog box.

Repeat steps Step 2 through Step 5 and query

alarms generated in other boards or modules.

An alarm is generated Clear the alarm based on the troubleshooting

suggestions.

NOTE

When the transmission is unavailable, which indicates that the BTS is not connected to the BSC, certain

alarms are generated in common cases. These alarms are theE1 Local Alarm of the GTMU, the SW Not

Activated Alarm, the LAPD Alarm, and the SFP Port Inconsistency Alarm. The SFP Port

Inconsistency Alarm is reported only when the TRX is connected but not configured or is configured but

not connected.

----End

5.6 Checking the Hardware Connection of the BTS

This describes how to check the hardware connection of the BTS by checking the connection

of power cables, grounding cables, and all kinds of signal cables.

Procedure

Step 1 For checking the connection of power cables and grounding cables, see Table 5-8.

Table 5-8 Checklist for the connection of the power cables and grounding cables

SN Check Item

1The unused connectors of the power cables are capped.

2 The PGND cable is green and yellow. The DC grounding cable is black.

The -48 V DC power cable is blue. The cross-sectional area of the PGND

cable is 16 mm2.

3 All the power cables and grounding cables are copper-core cables. The

outer diameter of the external power cables and grounding cables is about

11 mm.

4 The power cables and grounding cables are not short-circuited or

reversely connected.

5 The power cables and grounding cables are bound separately from other

cables.

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SN Check Item

6Labels are attached to both ends of the power cables and grounding cables.

7 The power cables and grounding cables are not damaged or broken.

8 There are no connectors or joints on the power cables or grounding cables.

9 There are no breaking equipment, such as switches and fuses, in the

electrical connection of the grounding system.

10 The redundant part of the power cables or grounding cables is stripped

off rather than coiled.

11 The lugs on both ends of the power cables or grounding cables are

soldered or crimped securely.

12 Bare wires and lug handles at the wiring terminals are tightly wrapped

with insulating tapes or heat-shrinkable tubes.

13 The flat washers and spring washers are well mounted on all wiring

terminals.

14 The diameter of the positive pole of the primary power supply connected

to the earth complies with the standard requirements.

15 The working grounding and protection grounding of the BTS and the

surge protection grounding of the building share one group of grounding

conductors.

16 The grounding grids of the tower, equipment room, and distribution

transformer (if the distance between the transformer and the equipment

room is less than 30 m) constitute an integrated grounding grid.

Step 2 See Table 5-9 to check the connection of all the signal cables.

Table 5-9 Checklist for the connection of the signal cables

SN Check Item

1The connectors of the E1 cables are tight and secure.

2 The connectors of the E1 cables are intact.

3 The E1 cables or RF cables are not damaged or broken.

4 The connectors of the RF cables are fixed in position to prevent the

possible false connection from causing abnormal voltage standing wave

ratio (VSWR).

5 The horizontal RF cables are clamped to the cable trough.

6 The proper cable surpluses are reserved at the connectors.

7 All cables are neatly bound with ties installed at even intervals, to a proper

tightness, and in the same direction.

8 Extra cable ties are cut off. All cuts are smooth without sharp projections.

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SN Check Item

9The cable layout facilitates maintenance and future capacity expansion.

10 All the labels and tags at both ends of the cables are legible.

11 The unused ports are covered with dust-proof covers and matching plugs.

12 The indoor 1/2-inch jumpers are distributed according to the layer and

sector.

13 The indoor 1/2-inch jumpers are kept straight for 300 mm at their joints

with the cabinet.

----End

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6 Optional Commissioning Tasks

About This Chapter

The optional commissioning tasks are the VSWR check, output power of the TRX check,

loopback test check, settings of the DIP switches on the board check, transmission between the

BBU and the BSC on the BTS side check, transmission between cascaded TRXs check, and

TRX ring topology check.

6.1 Commissioning the Antenna System

This describes how to commission the antenna system. You must check whether the VSWR is

normal, whether the output power of the TRX is normal, and whether the antenna is connected

properly. If an RET antenna is configured, you need to commission it.

6.2 Performing the Loopback Test

This describes how to perform the loopback test. The loopback test is optional. Before testing

CS and PS services, you must check the transmission links of the signaling channels and traffic

channels in the BTS. Loopback tests can be classified into the carrier loopback test and the

channel loopback test.

6.3 Checking the DIP Switch Settings of the Boards

This describes how to check whether the settings of the DIP switches on the board are correct.

You can perform this task by checking whether the attribute values corresponding to the DIP

switches meet the actual requirements on the LMT.

6.4 Locally Checking the Transmission Between the BBU and the BSC

This describes how to check the status of the LEDs on the GTMU panel, how to check the

connections of the E1 cable and E1 surge protection transfer cable. It also describes how to clear

the fault caused by improper connections to ensure that the BBU communicates properly with

the BSC.

6.5 Checking the Transmission Between Cascaded TRXs

This describes how to check the transmission between cascaded TRXs. The following

description is based on three levels of cascaded TRXs.

6.6 Checking TRXs in Ring Topology

This describes how to check TRXs in ring topology on site. The following description is based

on level 3 of TRXs in ring topology.

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6.1 Commissioning the Antenna System

This describes how to commission the antenna system. You must check whether the VSWR is

normal, whether the output power of the TRX is normal, and whether the antenna is connected

properly. If an RET antenna is configured, you need to commission it.

6.1.1 Measuring the VSWR

This describes how to measure whether the VSWR is less than or equal to 1.5. If the VSWR is

less than or equal to 1.5, the transmission of the antenna system is normal. To measure the

VSWR, perform the following steps where the Site Master is taken as an example.

6.1.2 Monitoring the Output Power of TRXs

This describes how to obtain the output power of the TRX, which indicates the running status

of the TRXs.

6.1.3 Checking the Antenna Connection

This describes how to check the antenna connections with an MS. You can lock the MS on a

cell frequency and perform the dialing test. If the MS dialing test is successful, the antenna is

properly connected.

6.1.1 Measuring the VSWR

This describes how to measure whether the VSWR is less than or equal to 1.5. If the VSWR is

less than or equal to 1.5, the transmission of the antenna system is normal. To measure the

VSWR, perform the following steps where the Site Master is taken as an example.

Prerequisite

The BTS is powered off.

NOTE

If you have checked the VSWR before powering on the BTS, you do not need to perform this task.

Procedure

Step 1 Measure the VSWR at the antenna port by using the Site Master.

If... Then...

The VSWR is less than or equal to 1.5 The transmission of the antenna system is

operational. Record the VSWR in the

Commissioning Record Data Sheet.

If the VSWR is greater than 1.5 The transmission of the antenna system is faulty. Go

to Step 2.

Step 2 Use the Site Master to locate the fault point of the abnormal VSWR on the jumper or feeder.

When a fault point is found, check whether the connections are secure at the fault point, and

whether the connectors are intact. If the connector is faulty, replace it.

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NOTE

The fault points are usually at the connection point between the jumper and the feeder or between the

jumper and the antenna.

----End

6.1.2 Monitoring the Output Power of TRXs

This describes how to obtain the output power of the TRX, which indicates the running status

of the TRXs.

Procedure

Step 1 Connect the power meter to the ANT port on the RFU.

Step 2 In the navigation bar of the Site Maintenance Terminal System window, choose Site. In the

browse window, double-click RF Specification Test. The Please select RC to test dialog box

is displayed. Select the board to be tested, as shown in Figure 6-1.

Figure 6-1 Please select RC to test dialog box

Step 3 Click OK. The RF Specification Test dialog box is displayed, as shown in Figure 6-2.

Figure 6-2 RF Performance Test dialog box

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Step 4 Set the parameters listed in Table 6-1. Then, click User-defined Message. Then, click Start

Test to initiate the test on the output power of the TRXs.

NOTE

The parameters not involved in Table 6-1 can use the default values.

Table 6-1 Parameter required in RF performance test

Group Box Type Parameter Setting Description

Testing Items Select Transmitter, and retain the default settings of the drop-

down list.

Antenna Mode Set the corresponding antenna mode and Card No. based on the

actual configuration.

Power Type Set Power Type according to the actual configuration.

Channel Type Select Cell No., RC No., and Channel No. based on the actual

configuration.

AC Setting Select Band based on actual configuration. Set Static power to 0.

Step 5 Check the output power displayed in the power meter. Determine whether the output power of

the TRX is within the normal range.

If... Then...

The output power is within the normal

range

Record the power in the 8 Commissioning Record

Data Sheet.

The output power is beyond the normal

range

1. Check whether the connection between the

power meter and the cable is secure.

2. Check whether the power meter is correctly set.

If any fault exists, clear it.

3. Check whether the RFU is correctly configured

and can transmit power.

4. Replace the RFU in which the TRX does not

transmit power normally.

NOTE

lThe output power displayed in the power meter is the power of the BTS with power sharing disabled.

The permissible offset of the power is ±1 dBm.

lThe TX output power displayed on the power meter is only that of a single carrier, rather than the total

power of all the carriers in the RFU module.

Step 6 Repeat steps Step 2 through Step 5 to check the output power of all the carriers at the site.

----End

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6.1.3 Checking the Antenna Connection

This describes how to check the antenna connections with an MS. You can lock the MS on a

cell frequency and perform the dialing test. If the MS dialing test is successful, the antenna is

properly connected.

Prerequisite

lThe BTS is powered on and works normally.

lThe transmission between the BSC and the BTS is normal.

lThe antenna system is connected to the cabinet.

lThe test MS is registered in the HLR.

Procedure

Step 1 Power on one test MS, and check that the MS automatically searches for the GSM network.

If... Then...

The test MS fails to find the GSM

network

lCheck whether the test MS has a SIM card. If

the test MS does not have a SIM card, insert the

SIM card in the MS.

lCheck whether the SIM card supports

authentication and encryption. If the SIM card

does not support authentication or encryption,

replace it.

lCheck whether the test MS is functional. If the

test MS is faulty, replace it.

The test MS finds the GSM network Go to Step 2.

Step 2 Lock the test MS on a frequency in a logical cell under the BTS.

Step 3 Perform the dialing test using the test MS. Then, check whether the antenna corresponding to

the frequency is connected properly according to the test results.

If... Then...

The dialing test is successful You can infer that the feeder corresponding to the

frequency is connected properly. Go to Step 4.

The dialing test is not successful You can infer that the antenna system on the frequency

may be connected improperly. Check the antenna

connection and adjust the antenna.

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NOTE

You are advised to do as follows to ensure the accuracy of test results:

lMake test calls within the power range of -30 dBm to -70 dBm under the tower.

lPerform the dialing test for more than five times.

Step 4 Repeat steps Step 2 through Step 3 to check the antenna connections on all the frequencies of

the BTS.

----End

6.2 Performing the Loopback Test

This describes how to perform the loopback test. The loopback test is optional. Before testing

CS and PS services, you must check the transmission links of the signaling channels and traffic

channels in the BTS. Loopback tests can be classified into the carrier loopback test and the

channel loopback test.

Prerequisite

lThe transmission between the BSC and the BTS is normal.

lThe current software version and data configuration on the LMT are correct.

lNo alarm related to disruption of BTS services is reported.

6.2.1 Performing the Carrier Loopback Test

This describes how to perform the carrier loopback test. Before testing CS and PS services, you

must check the transmission links of the signaling channels in the BTS.

6.2.2 Performing Channel Loopback Tests

This describes how to perform channel loopback tests. Before testing CS and PS services, you

must check that the transmission links of the traffic channels in the BTS are proper.

6.2.1 Performing the Carrier Loopback Test

This describes how to perform the carrier loopback test. Before testing CS and PS services, you

must check the transmission links of the signaling channels in the BTS.

Context

The BIU loopback test is performed to test the link transmission of the TRX timeslots on the

BTS DBUS.

Procedure

Step 1 On the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance >

Maintain TRX > Test TRX Loopback.

The Test TRX Loopback dialog box is displayed, as shown in Figure 6-3.

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Figure 6-3 Test TRX Loopback dialog box

Step 2 Set the parameters in the Location and Setting areas. That is, set Type to BIU Loop Test, and

set Site, Cell, and TRX as required.

NOTE

The maximum Duration of the BIU loop test is the default value, which is 10s. In most cases, the default

value is used.

Step 3 Click Start to perform the test. The result is displayed in the Test Result area, as shown in

Figure 6-3.

If... Then...

The BER is 0% The signaling channel is normal.

The BER is not 0% The signaling channel is abnormal. Record the number of the faulty

TRX, and contact Huawei BTS technical support engineers for

troubleshooting.

NOTE

During the test, you can click Stop to stop the test. The Succeeded in stopping the TRX loop test. message

is displayed in the Test Result area.

Step 4 Repeat steps Step 1 through Step 3 to perform the loopback test on the other TRXs.

----End

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6.2.2 Performing Channel Loopback Tests

This describes how to perform channel loopback tests. Before testing CS and PS services, you

must check that the transmission links of the traffic channels in the BTS are proper.

Context

The BIU loopback test is performed to test the timeslot transmission over the TRX traffic channel

on the DBUS in the BTS.

Procedure

Step 1 On the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance >

Maintain TRX > Test Channel Loopback.

The Test Channel Loopback dialog box is displayed, as shown in Figure 6-4.

Figure 6-4 Test Channel Loopback dialog box

Step 2 Set the parameters in the Location and Setting areas. That is, set Type to BIU Loop Test, and

set Site, Cell, TRX and Channelas required.

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NOTE

The maximum Duration of the BIU loop test is the default value, which is 10s. In most cases, the default

value is used.

Step 3 Click Start. The Confirm dialog box is displayed. Click Yes to perform the test. The result is

displayed in the Test Result area, as shown in Figure 6-4.

If... Then...

The BER is 0 per mille The service channel is normal.

The BER is not 0 per mille The service channel is abnormal. Record the number of the

faulty TRX, and contact Huawei BTS technical support

engineers for troubleshooting.

NOTE

During the test, you can click Stop to stop the test. The Succeeded in stopping the TRX loop test. message

is displayed in the Test Result area.

Step 4 Repeat steps Step 1 through Step 3 to perform the loopback test on the other channels.

----End

6.3 Checking the DIP Switch Settings of the Boards

This describes how to check whether the settings of the DIP switches on the board are correct.

You can perform this task by checking whether the attribute values corresponding to the DIP

switches meet the actual requirements on the LMT.

Prerequisite

lThe BTS is in TDM transmission mode.

lThe transmission between the BSC and the BTS is normal.

Procedure

Step 1 Query the information of the GTMU: In the BSC6000 Local Maintenance Terminal window,

select the target site. Right-click GTMU on the Site Device Panel tab page, and choose Query

Board Information. The Query Board Information dialog box is displayed.

Step 2 Click the Running Parameter tab, and then click Query on the Running Parameter tab page.

The query is successful, and the running status of the board is displayed in the dialog box.

Step 3 Check whether Attribute Value of E1/T1 Capability and Impedance Capability consistent

with the actual condition, as shown in Figure 6-5.

lIf the attribute values are consistent with the actual condition, end the task.

lIf the attribute values are not consistent with the actual condition, see the BTS3900 Quick

Installation Guide or the BTS3900A Quick Installation Guide to set the corresponding DIP

switches on the BTS side again.

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Figure 6-5 Site Device Attributes dialog box

----End

6.4 Locally Checking the Transmission Between the BBU

and the BSC

This describes how to check the status of the LEDs on the GTMU panel, how to check the

connections of the E1 cable and E1 surge protection transfer cable. It also describes how to clear

the fault caused by improper connections to ensure that the BBU communicates properly with

the BSC.

Prerequisite

lThe BBU is connected to the BSC through an E1/T1 cable.

lThe BBU and the BSC are successfully powered on.

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Procedure

Step 1 Check whether the settings of DIP switch meet the field requirements. if not, modify the settings

of DIP switch as required.

Step 2 Check the status of the LEDs LIU0 to LIU3 on the panel of the GTMU in the BBU. The LEDs

LIU0 to LIU3 correspond to link 1 to 4 of the E1/T1 cable. Each link has one TX line and one

RX line.

If... Then...

The LEDs are OFF The E1/T1 links are normal. End this task.

The LEDs are ON or ON for 0.125s and OFF

for 0.125s

The E1/T1 links are abnormal. Go to Step 3.

NOTE

You need check the status of only the LIU LEDs corresponding to the E1/T1 line in use. The LIU LEDs

corresponding to the unused E1/T1 cables are ON.

lIf the BBU is in non cascaded, there is only one E1/T1 link between the BBU and the BSC and the

corresponding LED is LIU0. If the LIU0 LED is OFF, it indicates the communication between the

BBU and the BSC is normal. Otherwise, the communication is abnormal.

lIf the two BBUs are cascaded, the second E1/T1 link of level 1 BBU is connected to the first E1/T1

link of level 2 BBU. Check the LIU1 LED and LIU0 LED on level 1 BBU and level 2 BBU respectively

to verify whether the physical link is operational. If multiple BBUs are cascaded, check the LEDs of

the corresponding links.

lIf the BBU and the BSC form a ring, check the LIUs corresponding to the links in the ring to verify

whether the communication is normal. For the connections of multiple BBUs and the LEDs to be

checked, see that of the two BBUs in cascading connection.

Step 3 Check the connections and connectors at both ends of the cables. If the connector is damaged,

replace it.

If... Then...

The UELP is configured lCheck whether the E1/T1 cable is connected properly

to the OUTSIDE port on the UELP.

lCheck whether the E1 surge protection transfer cable

is connected properly to the INSIDE port on the

UELP.

lCheck whether the E1 surge protection transfer cable

is connected properly to the E1/T1 on the GTMU.

The UELP is not configured Check whether the E1/T1 cable is connected properly

to the E1/T1 port on the GTMU.

Step 4 At the DDF on the BTS side, check the soldering conditions for the connectors of the E1/T1 link

where the communication is abnormal. Ensure sound jointing, since poor jointing may cause

poor E1/T1 connection.

Step 5 Perform a physical loopback test on the E1/T1 cable where the communication is abnormal.

Check whether the transmission of the E1/T1 cable is normal on the BTS side.

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1. For a pair of E1s/T1s connecting the BTS and BSC through the DDF, the A port is connected

to the C port, and the B port is connected to the D port. In the loopback test, disconnect the

A port from the C port, and the B port from the D port, and then connect the A port to the

B port, as shown in Figure 6-6. In this way, the TX end and RX end of the E1/T1 line is

connected and the physical loopback is formed on the BTS side.

Figure 6-6 Physical loopback of E1/T1 at the DDF

2. Check the status of the LIU LEDs on the GTMU panel again.

If... Then...

The LEDs are OFF The E1/T1 connections are normal on the

BTS side. The problem may be that the

connection between the BTS and the BSC or

the connections on the BSC side are faulty.

End the check, and contact the BSC

technical support engineer to clear the fault.

The LEDs are ON or ON for 0.125s and

OFF for 0.125s

The cable connections on the BTS side are

faulty. Clear the fault on the BTS side.

3. Set the E1s/T1s at the DDF on the BTS side from physical loopback to normal connection.

Ensure that the connections are sound.

Step 6 Check the E1/T1 connections at the DDF. Ensure that the TX and RX ends of the E1 cables are

connected properly.

NOTE

Do as follows to distinguish the E1 RX end from the E1 TX end:

Connect a pin of an LED to the wire of the E1/T1 cable, and the other pin to the shielding layer of the E1/

T1 cable. If the LED is ON, this end is the TX end. If the LED is OFF, this end is the RX end.

----End

6.5 Checking the Transmission Between Cascaded TRXs

This describes how to check the transmission between cascaded TRXs. The following

description is based on three levels of cascaded TRXs.

Prerequisite

The physical connection between cascaded TRXs on the BTS side is complete.

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Procedure

Step 1 In the navigation tree in the left pane of the BSC6000 Local Maintenance Terminal window,

select the BTS, and check whether the status of the three cascaded TRXs on the Site Device

Panel tab page is green, as shown in Figure 6-7.

lIf the TRXs are displayed in green, you can infer that the TRXs are functional. End this

task.

lIf the TRXs are displayed in other colors, you can infer that the transmission between

cascaded TRXs is abnormal. Go to Step 2.

Figure 6-7 Site Device Panel tab page

Step 2 If the status of the level 2 TRX and level 3 TRX is red, you can infer that the link between the

level 1 TRX and level 2 TRX is faulty. The system reports SFP Port Inconsistency Alarm.

Check whether the connection between the TRXs on the BTS side is normal, or clear the alarm

based on the BSS Alarm Reference.

Step 3 If the status of the level 3 TRX is red, you can infer that the link between the level 2 TRX and

level 3 TRX is faulty. The system reports SFP Port Inconsistency Alarm. Check the

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transmission between the TRXs on the BTS side, or clear the alarm based on the BSS Alarm

Reference.

----End

6.6 Checking TRXs in Ring Topology

This describes how to check TRXs in ring topology on site. The following description is based

on level 3 of TRXs in ring topology.

Prerequisite

lThe physical connection between TRXs in ring topology on the BTS side is complete.

lThe configuration of the TRXs in ring topology on the BSC side is complete.

Context

lFigure 6-8 shows the connection between TRXs in ring topology. A, B, C, and D indicate

the positions where the link may be broken during the ring topology transmission.

Figure 6-8 Connection between TRXs in ring topology

BBU

RFU0 RFU1 RFU2

A B C

D R F U

Rx 1 in

Rx 1 o u t AN T 1

AN T 2

PW R

CP R I_ 0

CP R I_ 1

RST

RUN ALM

VSW RACT

CPR L 0 CPR L 1

Rx 2 in

Rx 2 o u t

D R F U

Rx 1 in

Rx 1 o u t AN T 1

AN T 2

PW R

CP R I_ 0

CP R I_ 1

RST

RUN ALM

VSW RACT

CPR L 0 CPR L 1

Rx 2 in

Rx 2 o u t

D R F U

Rx 1 in

Rx 1 o u t AN T 1

AN T 2

PW R

CP R I_ 0

CP R I_ 1

RST

RUN ALM

VSW RACT

CPR L 0 CPR L 1

Rx 2 in

Rx 2 o u t

lThe GTMU reports SFP Port Inconsistency Alarm when the ring topology is used in

physical connection but not in data configuration, or when the ring topology is used in data

configuration but not in physical connection.

CAUTION

Do not set breakpoints on the LMT when the TRXs are cascaded through the SFP high-speed

signal cable. Otherwise, the board will be seriously damaged. You can directly connect and

disconnect the signal cable between the cascaded TRXs to check the connection between them.

Procedure

Step 1 Check whether the TRX ring topology is configured on the LMT.

If... Then...

The ring topology is configured Go to Step 2.

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If... Then...

The ring topology is not configured Configure the ring topology. For details, see the BSC

Initial Configuration Guide.

Step 2 Change the TRX ring topology test to TRX cascaded test. The purpose of setting breakpoints

on the LMT is to simulate the scenario that faults occur on the transmission link. In this way,

you can check whether the TRXs are automatically switched to chain topology and whether the

alarm is reported.

1. in the BSC6000 Local Maintenance Terminal window, right-click the target site, and

choose Configure Site Board Attributes. The Site Device Attributes dialog box is

displayed.

2. Click Configure Site Board Attributes. The Site Device Attributes dialog box is

displayed, as shown in Figure 6-9.

Figure 6-9 Site Device Attributes dialog box

3. Right-click the RXU chain, and choose Set Break Point. The Set RXU Chain Break

Point dialog box is displayed.

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4. Set the breakpoint to disconnect the level 3 TRX, as shown in Figure 6-10.

Figure 6-10 Set RXU Chain Break Point dialog box

5. Click OK to return to the Site Device Attributes dialog box. The breakpoints marked with

red cross are displayed, as shown in Figure 6-11.

Figure 6-11 Setting breakpoint successfully

6. Click OK, and then click Finish to return to the BSC6000 Local Maintenance

Terminal window. The level 3 TRX is disconnected, and the Site Device Panel tab page

displays the faulty state, as shown in Figure 6-12.

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Figure 6-12 Status of the disconnected TRX ring topology

7. Right-click the site, and choose Configure Site Board Attributes from the shortcut menu.

The Configure Site Boards Attributes dialog box is displayed.

8. Click Configure Site Board Attributes, the Site Device Attributes dialog box is

displayed.

9. Right-click the RXU chain, and choose Combine or Separate RXU Chain. The Split

RXU Chain dialog box is displayed, as shown in Figure 6-13.

Figure 6-13 Split RXU Chain dialog box

10. Set Please select a point to split this RXU Chain to 2. Click OK, and then return to the

Site Device Attributes dialog box. The level 3 TRX is configured under the RXU link.

The start port is SFP1, as shown in Figure 6-14.

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Figure 6-14 Splitting RXU chain successfully

11. Click OK, and then click Finish to return to the BSC6000 Local Maintenance

Terminal window. Figure 6-15 shows the data configuration on the Site Device Panel tab

page. The GTMU reports the SFP Port Inconsistency Alarm.

Figure 6-15 TRX ring topology in splitting state

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NOTE

After Step 2.11 is performed, the status of the RFU is Faulty, and the TRX Communication

Alarm is reported. Wait one to two minutes, and the TRX Communication Alarm is cleared, and

the state of the RFU is Normal.

Step 3 Change the TRX cascaded test to TRX ring topology test. The purpose of removing breakpoints

on the LMT is to simulate the scenario that the faults on the transmission link. In this way, you

can check whether the TRXs are automatically switched to ring topology and whether the alarm

is automatically cleared.

1. In the BSC6000 Local Maintenance Terminal window, right-click the target site and

choose Configure Site Board Attributes. The Site Device Attributes dialog box is

displayed.

2. Click Configure Site Board Attributes. The Site Device Attributes dialog box is

displayed.

3. Right-click the RXU chain, and choose Combine or Separate RXU Chain. The Combine

RXU Chain dialog box is displayed.

4. Set Chain No. and Please select the RXU chains to be combined, as shown in Figure

6-16. The following description takes combining RXU chain 1 to RXU chain 0 as an

example.

Figure 6-16 Combine RXU Chain dialog box

5. Click OK, and return to the Site Device Attributes dialog box. The RXU Chain becomes

RXU Ring, as shown in Figure 6-17.

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Figure 6-17 Combining RXU chain successfully

6. Click OK, and then click Finish to return to the BSC6000 Local Maintenance

Terminal window. Figure 6-18 shows the status of boards on the Site Device Panel tab

page. SFP Port Inconsistency Alarm is cleared. The level 3 TRX, however, is in the

disconnected state due to the breakpoint. Therefore, TRX Communication Alarm is

reported.

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Figure 6-18 RXU ring in combined state

7. In the BSC6000 Local Maintenance Terminal window, right-click the target site and

choose Configure Site Board Attributes, and the Site Device Attributes dialog box is

displayed.

8. Click Configure Site Board Attributes. The Site Device Attributes dialog box is

displayed.

9. Right-click the RXU chain, and choose Set Break Point. The Set RXU Chain Break

Point dialog box is displayed.

10. Delete breakpoints: Set Break Point 1 Position and Break Point 2 Position to NULL.

11. Click OK, and return to the Site Device Attributes dialog box. The two breakpoints marked

with red cross are cleared.

12. Click OK, and then click Finish to return to the BSC6000 Local Maintenance

Terminal window. All the alarms are cleared, and the status of each board is normal, as

shown in Figure 6-19.

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Figure 6-19 RXU Ring in normal state

NOTE

After Step 3.12 is performed, the status of the RFU is Faulty, and the TRX Communication

Alarm is reported. Wait one to two minutes, and the TRX Communication Alarm will be cleared,

and the status of the RFU is Normal.

----End

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7 FAQs for BTS Commissioning

About This Chapter

This describes the fault symptoms and cause analysis in the BTS commissioning.

7.1 Failed Communication Between the SMT and the BTS

This describes the symptom of the communication failure between the SMT and the BTS and

analyzes the cause of the failed communication. It also provides the fault handling suggestions.

7.2 Faulty E1 Link

This describes the fault symptom and analyzes the cause of the faulty E1 link. It also provides

the fault handling suggestions.

7.3 Failure of an MS to Search the Network

This describes the fault symptom and analyzes the cause of the failure of an MS to search the

network.

7.4 Service Dialing Failure

This describes the fault symptom and analyzes the cause of the service dialing failure. It also

provides the fault handling suggestions.

7.5 Low GPRS Data Transmission Rate

This describes the fault symptom and analyzes the cause of low GPRS data transmission rate.

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7.1 Failed Communication Between the SMT and the BTS

This describes the symptom of the communication failure between the SMT and the BTS and

analyzes the cause of the failed communication. It also provides the fault handling suggestions.

Fault Symptom

connection between the SMT PC and the BTS cannot be established.

Cause Analysis and Handling Suggestions

Table 7-1 lists the possible causes and related suggestions to handle the fault.

Table 7-1 Possible causes and handling suggestions for failed communication between the SMT

and the BTS

Fault Cause Handling Suggestion

The Ethernet cable is faulty. Check the connection of the Ethernet cable.

Check whether the RJ45 connectors on both

ends are functional. If the RJ45 connector is

faulty, replace it.

The IP address of the SMT PC is incorrect. Check whether the IP address of the SMT PC

is on the same network segment as that of the

board.

7.2 Faulty E1 Link

This describes the fault symptom and analyzes the cause of the faulty E1 link. It also provides

the fault handling suggestions.

Fault Symptom

Alarms related to the E1/T1 link are reported, or the upper link is faulty.

Analysis

When the E1 links are faulty, the cause may be one of the following:

lThe physical connection of cable is faulty.

lThe crossed pair connection exists.

lThe BER in transmission is high.

Handling Suggestion

1. Check the connections and connectors at both ends of the E1 link. Ensure that the

connections are reliable and the connectors are functional.

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2. Check for the crossed pair connection on the LMT.

3. Perform a physical loopback test to check whether the transmission of the E1 cable is normal

on the BTS side.

4. Check the transmission channels to ensure that all the transmission channels are available.

Example One: Detection of Crossed Pair Connection

NOTE

The detection method in this example is applicable to check for the improper E1 connection between the

BTS and the BSC or the improper E1 connection on the BSC side. This detection method also can be used

to check the improper T1 connection.

The crossed pair connection refers to the incorrect RX and TX connections between two pairs

of E1 cables, as shown in Figure 7-1.

Figure 7-1 Crossed pair connection

E1 A E1 A

E1 B E1 B

RXTX

Perform the loopback method on the BSC side to check for crossed pair connection. Perform

different steps according to different E1 connection modes.

NOTE

Loopback test: Set the port on the BTS side to the directly physical loopback mode. Send the test data,

which carries the E1 port number, to the TX end of the E1 from the BSC side. After the loopback, check

whether the received port information is the same as the transmitted one. If yes, you can infer that the E1

cable is correctly connected. If not, you can infer that the crossed pair connection occurs.

lE1 link between the BTS and the BSC (1): BTS→DDF on the BTS side→DDF on the BSC

side→BSC, as shown in Figure 7-2.

Figure 7-2 E1 link between the BTS and the BSC (1)

BTS BSC

DDF0

E1/T1

E1/T1 E1/T1

E1/T1

DDF1

E1/T1

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Commissioning Guide 7 FAQs for BTS Commissioning

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

7-3

1. Check for the crossed pair connection on the E1 cable between the DDF on the BSC

side and the BSC.

(1) Perform a physical loopback on each E1 cable at the DDF subrack of the BSC,

as shown in Figure 7-2. Connect port C1 and port D1

(2) Run CHK E1T1CRS to query the results. If the results of all the ports are NOT

CROSS, you can infer that the E1 cable is correctly connected on the BSC side.

If the results are CROSS EXIST, correctly connect the E1 cable to this port.

(3) Restore the E1 connections between the BSC and the DDR. That is, connect port

C1 to port A1 and connect port D1 to port B1.

2. Check for the crossed pair connection on the E1 cable at the DDF subrack of the BSC.

That is, connect port A1 and port B1. The detection method is similar to that in 1.

3. Check for the crossed pair connection on the E1 cable between the DDF subrack of

the BTS and the DDF subrack of the BSC. That is, connect port C0 and port D0. The

detection method is similar to that in 1.

4. Check for the crossed pair connection on the E1 cable at the DDF subrack of the BTS.

That is, connect port A0 and port B0. The detection method is similar to that in 1.

lE1 link between the BTS and the BSC (2): BTS→DDF on the BSC side→BSC, as shown

in Figure 7-3.

Figure 7-3 E1 link between the BTS and the BSC (2)

BTS BSC

E1/T1

DDF

E1/T1

1. Check for the crossed pair connection on the E1 cable between the DDF subrack of

the BSC and the BSC.

(1) Perform a physical loopback on each E1 cable at the DDF subrack of the BSC,

as shown in Figure 7-2. Connect port C and port D.

(2) Run CHK E1T1CRS to query the results. If the results of all the ports are NOT

CROSS, you can infer that the E1 cable is correctly connected on the BSC side.

If the results are CROSS EXIST, correctly connect the E1 cable to this port.

(3) Restore the E1 connections between the BSC and the DDR subrack. That is,

connect port C to port A and connect port D to port B.

2. Check for the crossed pair connection on the E1 cable at the DDF subrack of the BSC.

That is, connect port A and port B. For details, see 1.

Example Two: Check for UELP Faults Through Physical Loopback Test

NOTE

The physcial loopback test in this example is applicable to check for the improper E1 connection on the

BTS side.

7 FAQs for BTS Commissioning

BTS3900(A) GSM

Commissioning Guide

7-4 Huawei Proprietary and Confidential

Issue 02 (2009-04-20)

1. Ensure that the E1/T1 cable is securely connected to the OUTSIDE port on the UELP, and

that the connectors are in sound condition. If the connector is damaged, replace it.

2. Ensure that the E1 transfer cable is securely connected to the INSIDE port on the UELP

and the E1/T1 port on the GTMU, and that the connectors are in sound condition. If the

connector is damaged, replace it.

3. Perform the physical loopback test and troubleshoot the fault in the UELP.

(1) Perform a physical loopback on the BTS side. In general, for a pair of E1s/T1s

connecting the BTS and BSC through the DDF, port A0 is connected to port C0, and

port B0 is connected to port D0. In the loopback test, disconnect port A0 from port

C0, and port B0 from port D0, and then connect port A0 to port B0, as shown in Figure

7-4. In this way, the physical loopback is formed on the BTS side.

Figure 7-4 Physical loopback of E1/T1 on the BTS side

BTS BSCDDF0

E1/T1

E1/T1 E1/T1

E1/T1

DDF1

E1/T1

(2) You need check the state of the LIU LEDs corresponding to the E1/T1 in use, as

shown in Table 7-2.

Table 7-2 Meaning of the state of the LIU LEDs (UELP used)

If... Then...

The LEDs are OFF The cable connections on the BTS side

are operational. The fault of the UELP

is cleared. The testing task on the BTS

side is complete.

The LEDs are ON or ON for 0.125s and

OFF for 0.125s

The cable connections on the BTS side

are faulty. Clear the fault of the UELP.

(3) Disconnect the E1 transfer cable and the E1/T1 cable. Then, directly connect the E1/

T1 cable to the E1/T1 port on the GTMU.

(4) When the UELP is not used, determine whether the E1/T1 link is normal based on the

state of the LIU LEDs on the GTMU panel, as listed in Table 7-3.

BTS3900(A) GSM

Commissioning Guide 7 FAQs for BTS Commissioning

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

7-5

Table 7-3 Meaning of the state of the LIU LEDs (UELP not used)

If... Then...

The LEDs are OFF The UELP is faulty.

a. Check whether the connection

between the UELP and the backplane

of the BBU is reliable.

b. Replace the UELP.

The LEDs are ON or ON for 0.125s and

OFF for 0.125s

The UELP is functional, but the E1 link

on the BTS side is faulty.

(5) Reconnect the E1/T1 cable to the OUTSIDE port on the UELP and ensure that the

connection is proper.

(6) Reconnect the E1/T1 cable to the INSIDE port on the UELP and the E1/T1 port on

the GTMU, and ensure that the connection is proper.

CAUTION

After the physical loopback test, set the E1/T1 at the DDF on the BTS side from physical

loopback to normal connection. Ensure that the connections are sound.

7.3 Failure of an MS to Search the Network

This describes the fault symptom and analyzes the cause of the failure of an MS to search the

network.

Fault Symptom

An MS fails to find the network.

Cause Analysis

The possible causes are as follows:

lCell parameters such as CGI, BCCH, TA, and BSIC are improperly configured.

lThe MS does not support the frequency band of this base station.

lThe downlink signals are weak. Therefore, the MS is unable to locate the cell.

lThe downlink interference is strong. The MS is unable to locate the cell or receive the

correct downlink system information.

lThe cell radius is small.

NOTE

When the MS fails to find the network, pay attention to the output power of the local cell and the radio

network coverage.

7 FAQs for BTS Commissioning

BTS3900(A) GSM

Commissioning Guide

7-6 Huawei Proprietary and Confidential

Issue 02 (2009-04-20)

7.4 Service Dialing Failure

This describes the fault symptom and analyzes the cause of the service dialing failure. It also

provides the fault handling suggestions.

Fault Symptom

Service dialing failure may occur in either of the following cases:

lLocation update failure

lService dialing failure

Cause Analysis and Handling Suggestion

Table 7-4 lists the possible causes and related suggestions.

Table 7-4 Possible causes and handling suggestions for service dialing failure

Cause of the Fault Handling Suggestion

The MS is faulty. Replace the MS with a new one.

The CS domain or the PS domain on the CN side is not

ready.

Keep the CS domain and the PS

domain ready.

7.5 Low GPRS Data Transmission Rate

This describes the fault symptom and analyzes the cause of low GPRS data transmission rate.

Fault Symptom

During the service test, the following problems may occur: low GPRS data rate in the PS domain

of the newly added BTS, or a high BER on the Abis interface.

Cause Analysis

The possible causes are as follows:

lThe E1 cable is not properly grounded. You can enable the grounding status of the E1 cable

by setting the DIP switch SW2 on the GTMU. Table 7-5 describes the DIP switch SW2.

Table 7-5 Description of the DIP switch SW2 on the GTMU

Setting of DIP Bit Description

1 2 3 4

ON ON ON ON The E1 cable is grounded.

OFF OFF OFF OFF The E1 cable is not grounded.

BTS3900(A) GSM

Commissioning Guide 7 FAQs for BTS Commissioning

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

7-7

If... Then...

Only one end of the E1 cable is grounded, The E1 cable is grounded properly.

Both ends of the E1 cable are grounded, The E1 cable is not grounded properly.

lThe data configuration negotiated between the BSC and the BTS is not consistent.

lThe cell signals are weak.

lThe MS capability is limited.

7 FAQs for BTS Commissioning

BTS3900(A) GSM

Commissioning Guide

7-8 Huawei Proprietary and Confidential

Issue 02 (2009-04-20)

8 Commissioning Record Data Sheet

This describes the data sheet that is used to record the process and result of the BTS

commissioning.

Table 8-1 Data sheet for BTS commissioning

Site Name

BTS Model

Commissioning

Time

Commissioning

Engineer

Scenario □ Transmission available scenario □ Transmission unavailable

scenario

Commissioning

Result

□ Successful □ Failed

Commissioning Item Conclusion Handling

Exceptional Case

Commissioning

Preparation Phase

The resources required for

commissioning are available.

The commissioning

requirements are met.

Commis

sioning

Phase

Transmis

sion

Unavaila

ble Phase

You have logged in to the BTS

through the SMT.

The BTS board and logical

objects are available.

The current software version is

correct.

BTS3900(A) GSM

Commissioning Guide 8 Commissioning Record Data Sheet

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

8-1

The transmission between the

BBU and the RXU is normal.

No other alarms are reported

except the alarms related to the

transmission.

The hardware connections are

correct.

Site management rights are

released.

The transmission between the BBU and the

BSC is available.

Transmis

sion

Availabl

e Phase

(on the

LMT)

The transmission between the

BBU and the RXU and the

transmission between the BBU

and the BSC is normal.

The transmission between

cascaded BTSs is normal.

The transmission between

BTSs in ring topology is

normal.

The board configuration is

correct and the boards are in

normal operation.

The current software version is

correct.

The hardware installation and

the data configuration are

consistent with each other.

No alarms related to the BTS

are reported.

The CS service test is

successful.

The PS service test is

successful.

The environment monitoring

alarm is reported normally.

Optional

Commiss

ioning

Task

The VSWR is correct. Record

the value of the VSWR.

The output power of the TRX

is normal. Record the value of

the output power per carrier.

8 Commissioning Record Data Sheet

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Commissioning Guide

8-2 Huawei Proprietary and Confidential

Issue 02 (2009-04-20)

The antenna system is properly

connected.

The result of the carrier

loopback test is normal.

The result of the channel

loopback test is normal.

The DIP switch settings are

correct.

Commis

sioning

Result

Unsolved Problems Impact

Unsolved Problems

After

Commissioning

BTS3900(A) GSM

Commissioning Guide 8 Commissioning Record Data Sheet

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

8-3

9 Communication Ports Used by the GBTS

Table 9-1 lists the communication port used by the GBTS

Table 9-1 The Communication Port Used by GBTS

Prot

ocol

Side

Ports

(Liste

ning)

Side B Side

Ports

(Lau

nch)

Service Authe

nticati

TCP GBT

700 SMT 1024-

65535

It will be used by SMT for local

maintenance before GBTS connects

in the network

BTS3900(A) GSM

Commissioning Guide 9 Communication Ports Used by the GBTS

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

9-1

Huawei Technologies GRFU-1900 GSM Radio Frequency Unit User Manual Commissioning Guide

Huawei Technologies Co.,Ltd GSM Radio Frequency Unit Commissioning Guide

Installation Guide

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