bts terminal maintenance

User Manual M900/M1800 Base Transceiver Station (BTS22C)

BTS Maintenance – BTS Terminal Maintenance1 Introduction

Huawei Technologies Proprietary

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Table of Contents

1 Introduction..................................................................................................................................................................1-1 1.1 BTS Terminal Maintenance .............................................................................................................................1-1 1.2 Operations of Site Maintenance Terminal System ..........................................................................................1-1

1.2.1 User Login...........................................................................................................................................1-1 1.2.2 Interface Operations ...........................................................................................................................1-2

2 Installation ...................................................................................................................................................................2-1 3 "SITE" Functions .........................................................................................................................................................3-1

3.1 Site Administrationship....................................................................................................................................3-1 3.2 Opstart Site .....................................................................................................................................................3-1 3.3 View Resource ................................................................................................................................................3-2 3.4 Force Load SW ...............................................................................................................................................3-3 3.5 SW Activation ..................................................................................................................................................3-4 3.6 Reset Site Hierarchically .................................................................................................................................3-4

4 "Cell" Functions ...........................................................................................................................................................4-1 4.1 Cell Attributes Management ............................................................................................................................4-1 4.2 Cell Extended Attributes Management............................................................................................................4-2 4.3 Opstart Cell .....................................................................................................................................................4-3 4.4 Change Administrative State...........................................................................................................................4-4 4.5 Cell Performance Test.....................................................................................................................................4-4 4.6 Cell Reinitialization..........................................................................................................................................4-5

5 "BT" Functions.............................................................................................................................................................5-1 5.1 Opstart BT.......................................................................................................................................................5-1 5.2 Change BT Administrative State .....................................................................................................................5-2 5.3 BT Reinitialization ...........................................................................................................................................5-3

6 "RC" Functions ............................................................................................................................................................6-1 6.1 RC Attributes Management .............................................................................................................................6-1 6.2 RC Extended Attributes Management.............................................................................................................6-2 6.3 Opstart RC ......................................................................................................................................................6-3 6.4 Change RC Administrative State.....................................................................................................................6-3 6.5 RC Reinitialization...........................................................................................................................................6-4

7 "Channel" Functions....................................................................................................................................................7-1 7.1 Channel Attributes Management.....................................................................................................................7-1 7.2 Opstart Channel ..............................................................................................................................................7-2 7.3 Change Channel Administrative State ............................................................................................................7-2

8 "Board" Functions........................................................................................................................................................8-1 8.1 Rack Configuration and Board Configuration..................................................................................................8-1 8.2 Board Management.........................................................................................................................................8-2




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1 Introduction

1.1 BTS Terminal Maintenance

In GSM system, BTS (Base Transceiver Station) is generally located far away from BSC (Base Station Controller), so it is usually unattended. Maintenance and supervision operations on BTS are carried out remotely at BSC side. But when field maintenance are necessary, local BTS terminal maintenance becomes indispensable.

Usually, BTS terminal maintenance is carried out through installing BTS terminal maintenance software on a PC (either a desktop or laptop, the latter is usually preferred) and is connected to MMU board through serial communication cable (MMU board is equipped with a 9-pin serial communication cable socket). As in the case of BTS maintenance, BTS terminal maintenance operations are also carried out in terms of BTS logic objects. As for the logic objects and their various status, they have already been described in detail in BTS Maintenance Part One, it would be unnecessary to repeat it here.

1.2 Operations of Site Maintenance Terminal System

As the operations in site maintenance terminal system are performed locally over a single PC, they are somewhat different from those in BTS maintenance. Detailed description on these operations is to be given in this section.

1.2.1 User Login

I. Function

A user must first log in site maintenance terminal system before being authorized to perform any maintenance operations over the console.

II. Login

Click on the fifth button on the toolbar, or choose [User Management/User Login] menu to pop up a "User Login" window. Enter user name and password, then click <OK> button. See Figure 1-1.




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Figure 1-1 User login

After the user is successfully logged in, the above-mentioned window would be automatically closed and the user can proceed to perform desired operations. If the login fails, the reason would be displayed in the window.

1.2.2 Interface Operations

As shown in Figure 1-2, the interface of site maintenance terminal system is divided into the following parts: menu, toolbar, BTS logic object, object function, alarm window, status bar and etc. All the menu commands in the menu are easy to understand and the buttons on the toolbar are shortcuts for these commands. Move the cursor on a button to display its functions.




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Figure 1-2 Site maintenance terminal system

BTS logic objects and their functions will be described later. This part focuses on alarm functions.

As shown in Figure 1-3, the part in light blue on the interface of site maintenance terminal system is BTS alarm display part, that means, when an alarm occurs to BS, it would be displayed in this part of the interface. Double click any alarm message in, it would display an "Alarm Detailed Explanation" window for this alarm, as shown in Figure 1-5. Right click a certain alarm message would pop up a menu as shown in Figure 1-4. Choose commands on the menu, and the functions of message setting, saving, clearing and scrolling can be performed over the message in the alarm window.




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Figure 1-3 Alarm display in the site maintenance terminal system

Figure 1-4 Operations on an alarm message




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Figure 1-5 Detailed explanations on an alarm message


BTS Maintenance – BTS terminal Maintenance2 Installation


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2 Installation

I. Connect the terminal O&M cable

Both ends of a BTS terminal operations & maintenance cable are DB9 connectors. One end is connected to the terminal O&M interface on the MOP board at the side of BS, and the other is connected to a serial port of an operation terminal (usually, a laptop computer). The pin-to-pin correspondence between the two DB9 connectors at the two ends of the cable is described in Table 2-1.

Table 2-1 Pin-to-pin correspondence between the two DB9 connectors at the two ends of an O&M cable

BTS side connector 2 3 5

Operation terminal side connector 3 2 5

II. Start the terminal O&M system

On an operation terminal (usually, a laptop computer), run BTS terminal application program MMI. If MMI gets connected to BS, a main man-machine interface for BTS O&M system would be displayed as shown in Figure 2-1.

Figure 2-1 BTS O&M man-machine interface


BTS Maintenance – BTS terminal Maintenance2 Installation


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If MMI fails to connect to BS, a failure dialogue box would pop up. Click <OK> button in this box to open a dialogue box as shown in Figure 2-2 and set the communication port parameters in it. Select a communication port as COM1, COM2 or COM3 according to which port is actually connected to the cable, and select "38400" as the communication rate, then click <OK> button.

Figure 2-2 Set communication port parameters dialogue box

If MMI still cannot get connected to BTS after all these settings, check whether the hardware connection of maintenance cables and the serial port hardware of the operation terminal is normal.

III. User login

After MMI gets connected to BS, choose [User Management/User Login] menu to open a dialogue box as shown in Figure 2-3. Enter "User Name" and "User Password", then click <OK> button. If the entered "User Name" and "User Password" are both correct, this dialogue box would disappear, which indicates that the user successfully logs in. Otherwise, a "Wrong Username or Password" prompt would be displayed.

Figure 2-3 User login dialogue box


BTS Maintenance – BTS Terminal Maintenance3 “SITE” Functions


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3 "SITE" Functions

As shown in Figure 2-1 BTS O&M Man-Machine Interface, left click [Site0] in the tree structure, and all the function commands corresponding to [Site0] would be displayed in the right part of this site window. Detailed description of the function commands under [Site0], including operation procedures as well as the explanation of function commands, is given in the following.

3.1 Site Administrationship

I. Operation procedure

Double click [Site0/Site administrationship] in the interface window as shown in Figure 2-1, and a dialogue box would pop up. In this dialogue box, click [Obtain] and a "Site Administrationship Successfully Obtained" prompt would be displayed under normal circumstances. Click [Release] button in the dialogue box mentioned above, a "Site Administrationship Successfully Released" prompt would be displayed under normal circumstances.

II. Description

This function command is used for MMI to obtain or release site administrationship. Once MMI obtains site administrationship, it can take the place of BSC to perform such operation and maintenance functions over BTS as various configurations, attribute settings, operations on boards, and etc. In this sense, MMI plays the role of background maintenance. Normally, all O&M commands can be executed by this MMI.

When MMI releases site administrationship, the O&M commands related to modification can no longer be executed, while the O&M commands related to reading can still be executed as usual.

3.2 Opstart Site


Double click [Site0/Opstart Site] as shown in Figure 2-1. Then, click <OK> button in the popped-up dialogue box, and a "Site Successfully Opstart" prompt would be displayed normally.

II. Description

This command is used for MMI to command "site0" into operation.




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3.3 View Resource


Double click [Site0/View resource] as shown in Figure 2-1, and normally a "System Responds" prompt as well as the configured CPU occupation rate of MFU and MMU would be displayed as shown in Figure 3-1. Select [Select Resource Type/Temperature Trace] to display the configured temperatures of MMU and MTR as shown in Figure 3-2.

Figure 3-1 View CPU occupation rate

Figure 3-2 View temperatures




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II. Description

This command is used for the MMI to instruct the BTS to report in real time the CPU usage rates concerning the MMU and MFU boards as well as the temperatures of the MMU and MTR boards, so that the maintenance staff can be at any time informed of the CPU loads and internal temperatures and take necessary measures thereby in an event of an over-high CPU usage rate or temperature.

3.4 Force Load SW


Double click [Site0/Force load SW] as shown in Figure 2-1 to open a dialogue box as shown in Figure 3-3. In this box, select the "File Name" of the file to be loaded, "Send Window Size" (40 as recommended value, and no larger than 49 under any circumstances), "Version", "File ID", and etc.. Then click <Begin>. Normally a SW download progress (0~100%) will be displayed and a "SW successfully downloaded" prompt would be shown after several minutes.

Figure 3-3 Force load SW and its progress

II. Description

BTS software upgrade can be performed in two steps: "Force load SW" and "SW activation". "Force load SW" is to load the upgraded software onto MMU board. Generally speaking, files to be downloaded onto various boards are: mmuxxxx.hex (MMU board download SW), mfuxxxx.omu (MFU board download SW) and mcidown.bin (MTR board download SW). In these file names, "xxxx" stands for version number.




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3.5 SW Activation


Double click [SITE0/ SW activation] as shown in Figure 2-1 to open a dialogue box as Figure 3-4. In this box, select "Version", "Board No.", "File ID", etc.. Then click <OK>. Normally if it is MMU board SW activated, a "Software Successfully Activated" prompt would be directly displayed. If it is other boards SW activated, the activating progress (0~100%) would be displayed. Then, a "Software Activation Complete" prompt would be displayed after a few minutes.

Figure 3-4 Software activation

II. Description

BTS software upgrade is performed in two steps: "Force load SW" and "SW activation". "SW activation" is to load the software which is forcibly loaded onto MMU to different boards.

3.6 Reset Site Hierarchically


Double click [Site0/ Reset site hierarchically] in Figure 2-1 to open a dialogue box as shown in Figure 3-5. Select a level in <Reset Level>, then click <OK>. Normally a "Site Hierarchical Reset successful" prompt would be displayed.




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Figure 3-5 Site hierarchical reset

II. Description

There are three levels of reset, the functions of which are described as follows:

First level reset: forcibly put an out-of-service BTS into service, abort the downloading progress from MMU to the board.

Third level reset: reinitialize BS, load data but not program.

Fourth level reset: BTS re-initializes, loads data, and loads program from FLASH MEMORY.


BTS Maintenance – BTS Terminal Maintenance 4 “Cell” Functions


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4 "Cell" Functions

As shown in Figure 2-1, double click [Site0/Celln] in the tree structure, and all the function commands corresponding to this cell would be displayed in the right part of this window.

Detailed explanation including operation procedures as well as description of the function commands corresponding to all the function commands under [Celln] is given in the following. The operation interface under [Celln] is shown in Figure 4-1.

Note:

The "n" in the "Celln" stands for the No. of this cell.

Figure 4-1 CELL O&M interface

4.1 Cell Attributes Management


Double click [Celln/ Cell attributes management] in Figure 4-1 to open a dialogue box as shown in Figure 4-2. Click <Set> button in this box and under normal circumstances a "Set Cell Attributes Successfully" prompt would be shown. Click




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<Refresh> button in this box and under normal circumstances the current attributes of the cell as well as a "Get Attributes Successfully" prompt would be displayed.

Figure 4-2 Cell attributes management

II. Description

This command is used to set or get the current attributes of [CELLn] under [Site0], which include "Interference Level Limit", "Interference Average Parameter", "Connection Failure Threshold", "T200", "Max. Timing Advance", "Overload Period", "CCCH Load Threshold", "CCCH Load Indication Period", "RACH Busy Threshold", "RACH Load Averaging Slots", "Cell Air Timer", "NY1", "BCCH ARFCN", "BSIC" and "Starting Time".

4.2 Cell Extended Attributes Management


Double click [Celln/Cell extended attributes management] in Figure 4-1 to open a dialogue box as shown in Figure 4-3. Click <Set> and under normal circumstances a "Set Cell Extended Attributes Successfully" prompt would be shown. Click [Refresh] and under normal circumstances the current extended attributes of the cell in question as well as a "Get Attributes Successfully" prompt would be displayed.




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Figure 4-3 Cell extended attributes management

II. Description

This command is used to set or get the current extended attributes of the [CELLn] under [Site0], which includes "RF Source Indication Period", "Paging Times" and "Access Lapse Threshold".

4.3 Opstart Cell


Double click [Celln/ Opstart cell] in Figure 4-1 open a dialogue box as shown in Figure 4-4. Click <OK> and under normal circumstances an "Opstart Cell Successfully" prompt would be displayed.

Figure 4-4 Start cell operation




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II. Description

This command is used for MMI to put the "celln" into operation.

4.4 Change Administrative State


Double click [Celln/ Change administrative state] in Figure 4-1 to open a dialogue box as shown in Figure 4-5. In this box, select an administrative state “LOCKED” or “UNLOCKED”. Then, click <OK> and under normal circumstances a "Cell Administrative State Successfully Changed" prompt would be displayed.

Figure 4-5 Change cell administrative state

II. Description

This command is used to change the state of BTs and RCs under CELLn into "LOCKED" and switch off the amplifier, or to return them into "IDLE" and switch on amplifier by changing the state to "UNLOCKED" under CELLn.

4.5 Cell Performance Test


Double click [Celln/ Cell performance test] in Figure 4-1 to open a dialogue box as shown in Figure 4-6. Click <Begin> button in this box and under normal circumstances the self-test results of the BTs and RCs under the cell would be displayed.




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Figure 4-6 Cell performance test

II. Description

This command is used to command the BTs and RCs under CELLn to conduct self-tests and report the results of these tests.

4.6 Cell Reinitialization


Double click [Celln/ Cell Reinitialization] in Figure 4-1 to open a dialogue box as shown in Figure 4-7. Click <OK> and under normal circumstances a "Reinitialize Cell Successfully" prompt would be displayed.

Figure 4-7 Cell reinitialization

II. Description

This command is used to reinitialize the BTs and RCs in the cell so that its data can be reset. Note that cell reinitialization should be performed with care, for it will bring the network covering the cell out of service for several minutes.


BTS Maintenance – BTS Terminal Maintenance5 “BT” Functions


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5 "BT" Functions

As shown in Figure 2-1, left click [Site0/Celln/BTi] in the tree structure and all the function commands corresponding to BTi would be displayed in the right part of the window.

Detailed explanation of these function commands including operation procedures as well as the description of these commands is given in the following. The BT Function Test Interface is shown as in Figure 5-1.

Note:

The "i" in "BTi" stands for the No. of BT.

Figure 5-1 BT function test interface

5.1 Opstart BT


Double click [Celln/BTi/Opstart BT] in Figure 5-1 to open a dialogue box as shown in Figure 5-2. Click <OK> and under normal circumstances an "Opstart BT successfully" prompt would be displayed.




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Figure 5-2 Start BT operation

II. Description

This command is used for MMI to put "BTi" into operation.

5.2 Change BT Administrative State


Double click the [Celln/BTi/Change BT administrative state] to open a dialogue box as shown in Figure 5-3. Select the BT(s) whose state is to be changed and change it into “LOCKED” or “UNLOCKED”. Then click <OK> and under normal circumstances a "BT Administrative State Successfully Changed" prompt would be displayed.

Figure 5-3 Change BT administrative state

II. Description

This command is used to change the state of the BT(s) in question to “LOCKED”, or to return it into "IDLE" by changing it to "UNLOCKED".




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5.3 BT Reinitialization


Double click [Celln/BTi/BT Reinitialization] to open a dialogue box as shown in Figure 5-4. Click <OK> and under normal circumstances a "Reinitialize BT Successfully" prompt would be displayed.

Figure 5-4 BT reinitialization

II. Description

This command is used to reinitialize the BT in question so that its data can be reset.


BTS Maintenance – BTS Terminal Maintenance6 “RC” Functions


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6 "RC" Functions

As shown in Figure 2-1, left click [Site0/Celln/RCj] in the tree structure and all the function commands corresponding to this RC will be displayed in the right part of the window.

Detailed explanation of these function commands including operation procedures as well as description is given in the following. RC Function Test Interface is shown as in Figure 6-1.

Note:

The "j" in "RCj" stands for the No. of this RC.

Figure 6-1 RC function test interface

6.1 RC Attributes Management


Double click [Celln/RCj/RC attributes management] to open a dialogue box as shown in Figure 6-2. Click <Set> and under normal circumstances a "RC Attributes Successfully Set" prompt would be displayed. Click <Refresh> and under normal




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circumstances the current attributes of the RC in question? as well as a "Getting RC Attributes Succeeded" prompt would be shown.

Figure 6-2 RC attributes management

II. Description

This command is used to set or get the current RC attribute parameters of [CELLn/RCj] under [Sitem], which include "RF Max. Power Reduction" and "ARFCN" (Absolute RF Channel Number).

6.2 RC Extended Attributes Management


Double click [Celln/RCj/RC extended attributes management] to open a dialogue box as shown in Figure 6-3. Click <Set> and under normal circumstances a "RC Extended Attributes Successfully Set" prompt would be displayed. Click <Refresh> and under normal circumstances the current extended attributes of the RC in question as well as a "Get RC Extended Attributes Successfully" prompt would be shown.

Figure 6-3 RC extended attributes management




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II. Description

This command is used to set or get the current extended attributes parameters of the [CELLn/RCj] under Sitem, which include "Static Power Class", "Saturation Threshold" and "Saturation Voltage Threshold".

6.3 Opstart RC


Double click [Celln/RCj/Opstart RC] in Figure 6-1 to open a dialogue box as shown in Figure 6-4. Click <OK> and under normal circumstances an "Opstart RC Successfully" prompt would be displayed.

Figure 6-4 Start TRX operation

II. Description

This command is used for MMI to put "RCj" into operation.

6.4 Change RC Administrative State


Double click [Celln/RCj/Change RC administrative state] to open a dialogue box as shown in Figure 6-5. Select the RC(s) whose state is to be changed and change it into “LOCKED” or “UNLOCKED”. Then click <OK> under normal circumstances a "RC Administrative State Successfully Changed" prompt would be displayed.




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Figure 6-5 Change RC administrative state

II. Description

This command is used to change the state of the RC(s) in question to “LOCKED” and switch of amplifier, or to return it into "IDLE" and switch on the amplifier by changing it to "UNLOCKED".

6.5 RC Reinitialization


Double click [Celln/RCj/RC Reinitialization] to open a dialogue box as shown in Figure 6-6. Then click <OK> and under normal circumstances a "Reinitialize RC Successfully" prompt would be displayed.

Figure 6-6 RC reinitialization

II. Description

This command is used to reinitialize the RC in question so that its data can be reset.


BTS Maintenance – BTS Terminal Maintenance7 “Channel” Functions


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7 "Channel" Functions

As shown in Figure 2-1, left click [Site0/Celln/BTi/Channelx] in the tree structure and all the function commands corresponding to this channel would be displayed in the right part of the window.

Detailed explanation of these function commands including operation procedures as well as description is given in the following. The Channel Function Interface is shown as in Figure 7-1.

Note:

The "x" in the "Channelx" stands for the No. of this channel.

Figure 7-1 Channel Function Interface

7.1 Channel Attributes Management


Double click [Celln/BTi/Channelx/Channel Attributes Management] in Figure 7-1 to open a dialogue box as shown in Figure 7-2. Click <Set> and under normal circumstances a "Channel Attributes Successfully Set" prompt would be displayed.




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Click <Refresh> and under normal circumstances the current attributes of the channel in question as well as a "Get Attributes Successfully" prompt would be displayed.

Figure 7-2 Channel attributes management

II. Description

This command is used to set or get the current channel attributes parameters of [CELLn/BTi/Channelx] under [Sitem], which include "Channel Combination", "TSC Selection" and "Starting Time".

7.2 Opstart Channel


Double click [Celln/BTi/Channelx/Opstart channel] in Figure 7-1 to open a dialogue box. Click <OK> button and under normal circumstances an "Opstart Channel Successfully" prompt would be displayed.

II. Description

This command is used for MMI to put [BTi/Channelx] into operation.

7.3 Change Channel Administrative State


Double click [Celln/BTi/Channelx/Change channel administrative state] in Figure 7-1 to open a dialogue box as shown in Figure 7-3. Select the number(s) of the channel (s) whose states are to be changed and change them into “LOCKED” or “UNLOCKED”. Then click <OK> and under normal circumstances a "Channel Administrative State Successfully Changed" prompt would be displayed.




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Figure 7-3 Change channel administrative state

II. Description

This command is used to change the state of the channel(s) in question to “LOCKED”, or to return it (them) into “IDLE” by changing it (them) to “UNLOCKED”.


BTS Maintenance – BTS Terminal Maintenance8 “Board” Functions


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8 "Board" Functions

As shown in Figure 2-1, left click [Board] in the tree structure and all the function commands corresponding to it would be displayed on the right part of the window.

Detailed explanation of on these function commands including operation procedures as well as descriptions is given in the following. The Board function Interface is as shown in Figure 8-1.

Figure 8-1 Board function interface

8.1 Rack Configuration and Board Configuration


Double click [Board/Rack Configuration or Board Configuration] in Figure 8-1 to open a dialogue box as shown in Figure 8-2. Under normal circumstances, "Board Report Message" would be displayed at the bottom left corner of this box. Right-clicking on a certain slot would help to perform ADD or DELETE operations over the board.




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Figure 8-2 Rack Configuration

II. Description

This command is used to perform ADD or DELETE operations over boards of BS. "Rack configuration" is for the entire rack, while "board configuration" is for boards.

8.2 Board Management

Double click [Board/Board Management] in Figure 8-1 to open a dialogue box as shown in Figure 8-3. Under normal circumstances, a "Board Report Message" prompt would be displayed at the bottom left corner of this box. Right-clicking on a certain board would help to perform corresponding operations on this board.

Detailed explanation of on these function commands including operation procedures as well as descriptions is given in the following.




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Figure 8-3 Board operation

I. MTR board

i. Reset MTR

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then click [Reset...] option in this menu and under normal circumstances a "Board Successfully Reinitialized" prompt would be displayed.

Description

This command is used for MMI to reinitialize MTR board in question so that its data can be reset.

ii. Opstart MTR

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then, [Opstart...] option in this menu and under normal circumstances a "Opstart Board Successfully" prompt would be displayed.

Description

This command is used for MMI to put MTR in question into operation.

iii. MTR self-test

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then click [Test...] option in this menu and under normal circumstances a "Board Test Succeeded" prompt would be displayed.




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Description

This command is used for MMI to command MTR in question to conduct a self-test and report the test result.

iv. MTR administrative state

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then choose [Administrative State/ Lock or Unlock] and under normal circumstances an "Administrative State Successfully Changed" prompt would be displayed.

Description

This command is used to change the state of MTR in question to “LOCKED”, or to return it into “IDLE” by changing it to “UNLOCKED”.

v. MTR board information

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then click [Board Information] to open a dialogue box as shown in Figure 8-4. Normally a "System Responds" prompt would be displayed.

Figure 8-4 MTR Board Information

Description

This command is used to command MTR board to report board type, board number, board state, software version and the number of alarms.

vi. MTR loop test

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then click [Loop Test...] to open a dialogue box as shown in Figure 8-5. Click <Begin> and under normal circumstances a "Loop Test Success" prompt would be displayed.




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Figure 8-5 MTR loop test

Description

This command is used for layer-3 message loop from MMI to MTR and can be used to check DCL link between MMU and MTR.

vii. MTR Board Alarm Information

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MTR board to display a pull-down menu. Then click [Board Alarm...] to open a dialogue box as shown in Figure 8-6. A "System Responds" prompt would be displayed under normal circumstances.

Figure 8-6 MTR board alarm information

Description




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This command is used for MMI to command MTR to report its detailed alarm information. Each cell in the above Figure represents an alarm type assigned with an alarm code, which is a two-digit hex number AB. "A" stands for the row number of the cell and "B" the column number of the cell. If no alarm occurs to the alarm module corresponding to a certain cell, the cell would be in green, otherwise, it would be in red. Detailed alarm explanation is listed in Table 8-1.

Table 8-1 Alarm indication on MTR board

Alarm type Code Level Possible causes Handling suggestion

"Forward Power Too Low" alarm

01 Minor

1. There is a breakpoint in the connection cable between MTR and MPA modules.

2. MTR module loses lock.

3. MTR or MPA module is faulty.

1. Check if there is a power supply alarm.

2. Reset MTR board.

3. Reset BS.

A-level temperature alarm

02 Minor The temperature of MPA module is too high.

Check BTS internal temperature.

B-level temperature alarm

03 Critical 1. The temperature of MPA module is too high.

2. MPA module is faulty.

1. Check BTS internal temperature.

2. Power off the power amplifier by unlocking RC.

3. Reset MTR.

Transmitting phase-lock loop alarm_0

05 Major

1. MMU clock module is ineffective.

2. Connection cable between MTR and MMU modules is faulty.

3. MTR module is faulty.

1. Check if there is a clock alarm.

2. Reset MTR board.

3. Reset BS.

Transmitting phase-lock loop alarm_1

06 Major Same as the above Same as the above

Transmitting phase-lock loop alarm _2 (intermediate frequency)


Receiving phase-lock loop alarm_0


Receiving phase-lock loop alarm_1


Receiving phase-lock loop alarm_2 (intermediate frequency)

0A Major Same as the above Same as the above




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Alarm type Code Level Possible causes Handling suggestion

Clock alarm 0B Major

1. MMU clock module is faulty.

2. Connection cable between MMU and MTR module is faulty.


1. Reset MTR board.

2. Reset BS.

Power supply alarm 0C Critical

1. Power supply distribution cable between the backplane and MTR module is faulty.


1. Reset MTR board.

2. Reset BS.

Frame number alarm 0D

Minor if it is set as non-hopping frequency. Major if hopping frequency


2. The distribution cable between the backplane and MTR module is faulty.


1. Reset MTR board.

2. Reset MMU board.

3. Reset BS.

Power amplifier alarm 0E Critical

1. There is a B-level temperature alarm.

2. There is a phase-lock loop lose-lock alarm.

3. Power amplifier is turned down manually in the background.

1. Turn off power amplifier by unlocking RC.

2. Reset MTR board.

3. Reset BS.

Downlink Bus alarm 12 Major

1. Data settings are incorrect.



1. Wait 1 minute to see if the alarm would be cleared.

2. Reset MTR board.

3. Reset MFU board.

4. Reset BS.

MCI link alarm 1D Critical DCL link between MMU and MCI is faulty.

Reset BS.

II. MFU Board

i. Reset MFU

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then click [Reset...] and under normal circumstances a "Reinitialize Board Successfully" prompt would be displayed.

Description

This command is used for MMI to reinitialize MFU board so that its data can be reset.

ii. Opstart MFU

Operation procedure




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In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then click [Opstart...] and under normal circumstances an "Opstart Board Successfully" prompt would be displayed.

Description

This command is used for MMI to put MFU into operation.

iii. MFU self-test

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then click [Test...] and under normal circumstances a "Board Test Succeeded" prompt would be displayed.

Description

This command is used for MMI to command MFU to conduct a self-test and report the test result.

iv. MFU administrative state

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then choose [Administrative State/Lock or Unlock] and under normal circumstances an "Administrative State Successfully Changed" prompt would be displayed.

Description

This command is used to change the state of MFU or the channel following to “LOCKED”, or to return it or the channel following into “IDLE” by changing it or the channel following to “UNLOCKED”.

v. MFU board information

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then click [Board Information] to open a dialogue box similar to Figure 8-4. A "System Responds" prompt would be displayed under normal circumstances.

Description

This command is used to command MFU to report board type, board number, board state, software version and the number of alarms.

vi. MFU loop test

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then click [Loop Test...] to open a dialogue box similar to Figure 8-5. click <Begin> and under normal circumstances a "Loop Test Success" prompt would be displayed.

Description

This command is used for layer-3 message loop from MMI to MFU and can be used to check HDLC link between MMU and MFU.




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vii. MFU board alarm information

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MFU board to display a pull-down menu. Then click [Board Alarm...] to open a dialogue box similar to Figure 8-6. A "System Responds" prompt would be displayed under normal circumstances.

Description

This command is used for MMI to command MTR to report its detailed alarm information. Detailed alarm explanation is listed in Table 8-2.

Table 8-2 MFU board alarm indication

Alarm type Code Level Possible causes Handling suggestions

PCM clock fault 01 Major

1. The connection between MFU and MMU clock module may be faulty.

2. E1 module of MMU is faulty.

3.MFU module is faulty.

1. Reset MFU board.

2. Reset MMU board.

3. Reset BS.

TDMA clock fault 03 Major

1. The connection between MFU and MMU clock module is faulty.


3. MFU module is faulty.

1. Reset MFU board.

2. Reset MMU board.

3. Reset BS.

LAPD link fault 09 Minor 1. MFU data is not set.

2. BSC data setting is incorrect.


2. Check BSC data setting.

3. Reset MFU board.

4. Reset BS.

Internal mailbox fault 0A Critical MFU internal mailbox link is faulty.1. Wait 1 minute to see if the alarm would be cleared.

2. Reset MFU board.

MFU SW loading failure

0E Minor Loading communication fails. Reset MFU board and reactivate MFU software.

CUI link fault 40 Critical /Minor

Uplink between MFU and MTR modules is faulty.


2. Reset MFU board.

3. Reset MTR board.

4. Reset BS.

Frame number abnormal

41 Critical /Minor

The connection between MFU and MMU clock module is faulty.

MFU link alarm 1D Critical HDLC link between MFU and MMU is faulty.

Reset BS.




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III. MMU board

i. Reset MMU

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MMU board to display a pull-down menu. Then click [Reset...] and under normal circumstances a "Reinitialize Board Successfully" prompt would be displayed.

Description

This command is used for MMI to reset MMU board.

ii. MMU self-test

Operation procedure

In "Board Operation" dialogue box as shown in Figure 8-3, right click MMU board to display a pull-down menu. Then click [Test...] and under normal circumstances a "Board Test Succeeded" prompt would be displayed.

Description

This command is used for MMI to command MMU to conduct a self-test and report the test result.

iii. MMU board information

Operation procedure

In "Board operation" dialogue box as shown in Figure 8-3, right click MMU board to display a pull-down menu. Then click [Board Information] to open a dialogue box as shown in Figure 8-7. A "System Responds" prompt would be displayed under normal circumstances.

Description

This command is used to command MMU board to report board type, board No., board state, delay parameter, crystal DA oscillation value, board alarm No., SW version, difference of discriminator and setting working mode.

Figure 8-7 MMU Board Information




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iv. Set MMU clock mode

Operation procedure

In "Board operation" dialogue box as shown in Figure 8-3, right click MMU board to display a pull-down menu. Then click [Set Clock Mode] to display a dialogue box as shown Figure 8-8. Select an option respectively for [Select Clock] and [Rack Delay] fields. Then click <OK> and under normal circumstances a "Clock Mode Successfully Set" prompt would be displayed.

Figure 8-8 Set MMU clock mode

Description

This command is used for MMI to specify the working mode of 13M crystal oscillator on MMU board.

v. MMU loop test

Operation procedure

In "Board operation" dialogue box as shown in Figure 8-3, right click MMU board to display a pull-down menu. Then click [Loop Test...] to open a dialogue box similar to Figure 8-5. Click <Begin> and under normal circumstances a "Loop Test Succeeded" prompt would be displayed.

Description

This command is used for layer-3 message loop from MMI to MMU and can be used to test MMU software.

vi. MMU Board Alarm Information

Operation procedure

In "Board operation" dialogue box as shown in Figure 8-3, right click MMU board to display a pull-down menu. Then click [Board Alarm...] to open a dialogue box similar to Figure 8-6. A "System Responds" prompt would be displayed under normal circumstances.

Description

This command is used for MMI to command MMU to report its detailed alarm information. Detailed alarm explanation is listed in Table 8-3.




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Table 8-3 MMU board alarm indication


Temperature alarm 22 Major The internal temperature is too high.

1. Check the ambient temperature.

2. Check if there is a power amplifier alarm.

Power-off alarm 2A Major The 220V power supply is off.

1. Wait several minutes to see whether the alarm would be cleared.

2. Reset BS.

Clock-module 13M clock alarm

41 Critical The board hardware or the backplane is faulty.

Reset MMU board.

"Clock-module crystal oscillation DA value 3/4 transgresses the threshold" alarm

42 Minor

Crystal oscillation is aged and most likely goes beyond the adjusting range.

1. Check the accuracy of BSC clock.

2. Keep a record and deliver the faulty board for repair.

8K reference clock alarm

43 Minor

E1 module of MMU does not send reference clock or the reference clock is unstable.

1. Check the accuracy of BSC clock and the transmission link quality.

2. Wait for recovery.

E1 link remote end out-of-sync

51 Minor The transmitting-end connection cable of No. 0 E1 is faulty.

1. Check the transmitting-end connection cable of No. 0 E1 at BS.

2. Check the receiving-end connection cable of the corresponding E1 at BSC or the superior BS.

E1 link remote end out-of-sync

52 Minor The transmitting-end connection cable of No. 1 E1 is faulty.

1. Ignore this alarm if no inferior BTS is attached to this BS.

2. Check the transmitting-end connection cable of No. 1 E1 at BS.

3. Check the receiving-end connection cable of the corresponding E1 at the inferior BS.

E1 link local end out-of-sync

53 Minor

1. E1 module at BSC or the superior BTS is out of service.

2. The receiving-end connection cable of No. 0 E1 is faulty.

1. Check if the E1 module at BSC or the superior BTS is in service.

2. Check the receiving-end connection cable of No. 0 E1.

3. Check the transmitting-end connection cable of the corresponding E1 at BSC or superior BS.

E1 link local end out-of-sync

54 Minor

1. E1 module at the inferior BTS is out of service.

2. The receiving-end connection of the No. 1 E1 is faulty.

1. Ignore this alarm if no inferior BTS is attached to this BS.

2. Check if the E1 module at the inferior BTS is in service.

3. Check the receiving-end connection cable of No. 1 E1.

4. Check the transmitting-end connection cable of the corresponding E1 at inferior BS.




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E1 tributary_0 out-of-service

55 Minor The board hardware is faulty.

Reset MMU board.

E1 tributary_1 out-of-service

56 Minor The board hardware is faulty

Reset MMU board.

bts terminal maintenance

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