ZXUR 9000 GSM
Base Station Controller
Routine Maintenance Guide(UME)
Version: V6.50.36
ZTE CORPORATION
ZTE Plaza, Keji Road South, Hi-Tech Industrial Park,
Nanshan District, Shenzhen, P.R.China
Postcode: 518057
Tel: +86-755-26771900
URL: http://support.zte.com.cn
E-mail: support@zte.com.cn
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Revision History
Revision No.
Revision Date
Revision Reason
R1.0
2023-10-10
First ediiton.
Serial Number: SJ-20200527083950-001
Publishing Date: 2023-10-10 (R1.0)
Contents
1 Overview..................................................................................................................1
1.1 Reference Documents......................................................................................................... 1
1.2 Tools.................................................................................................................................... 1
1.3 Prerequisites........................................................................................................................ 2
1.4 Routine Maintenance Intervals............................................................................................ 2
2 Remote Maintenance............................................................................................. 5
2.1 Daily Routine Maintenance................................................................................................. 5
2.1.1 Checking the Communication Links Between the NE and the UME...................... 5
2.1.2 Querying Active Alarms.......................................................................................... 6
2.1.3 Querying Historical Alarms..................................................................................... 9
2.1.4 Querying KPIs.......................................................................................................11
2.1.5 Querying Operation Logs..................................................................................... 11
2.2 Weekly Routine Maintenance............................................................................................13
2.2.1 Checking the Clock State.....................................................................................13
2.2.2 Checking the OMP............................................................................................... 13
2.2.3 Analyzing Historical Alarms of the Past Week..................................................... 15
2.2.4 Analyzing Performance Indicators........................................................................ 15
2.2.5 Backing Up NE Data............................................................................................ 16
2.3 Monthly Routine Maintenance........................................................................................... 17
2.3.1 Checking Board Software Version Information.....................................................17
2.3.2 Checking Board Hardware Version Information................................................... 17
3 Site Maintenance.................................................................................................. 18
3.1 Checking the Power Supply System.................................................................................19
3.1.1 Checking the Power Supply................................................................................. 19
3.1.2 Checking the Grounding Condition...................................................................... 19
3.2 Checking NE Devices........................................................................................................20
3.2.1 Checking LED Indicators...................................................................................... 20
3.2.2 Checking the Operational Sate of the Fan Subrack.............................................20
3.2.3 Checking the Antistatic Wrist Straps.................................................................... 21
3.2.4 Checking Board Panels........................................................................................ 21
3.2.5 Checking Protective Caps on Optical Interfaces of Boards..................................21
3.2.6 Checking the Cabinet Doors................................................................................ 21
3.3 Checking Cables............................................................................................................... 22
I
3.3.1 Checking Cable Connections............................................................................... 22
3.3.2 Checking the Cable Trays.................................................................................... 23
3.4 Checking the Equipment Room Environment................................................................... 23
3.4.1 Checking the Air Conditioning System................................................................. 23
3.4.2 Checking the Equipment Room Environment Alarms.......................................... 23
3.4.3 Checking Temperature in the Equipment Room.................................................. 26
3.4.4 Checking Humidity in the Equipment Room.........................................................26
3.4.5 Checking the Burglar Meshes, Doors, and Windows of the Equipment Room..... 27
3.4.6 Checking Illumination in the Equipment Room.....................................................27
3.4.7 Checking Firefighting Facilities in the Equipment Room...................................... 27
3.5 Site Cleanup...................................................................................................................... 28
3.5.1 Cleaning the Equipment Room............................................................................ 28
3.5.2 Cleaning the Equipment....................................................................................... 28
3.5.3 Cleaning the Air Filters.........................................................................................29
3.6 Checking the GPS/GLONASS Devices on the Site.......................................................... 31
3.7 Operations Before Leaving a Site..................................................................................... 31
Figures...................................................................................................................... 32
Tables........................................................................................................................33
Glossary....................................................................................................................34
II
About This Manual
Purpose
The manual describes the tasks and methods of routine maintenance for the radio network controller.
Intended Audience
This manual is intended for:

System engineers

Maintenance engineers
What Is in This Manual
This manual contains the following chapters:
Chapter 1, Overview
Describes the reference documents, tools, conditions, and maintenance intervals of routine maintenance for the radio network controller.
Chapter 2, Remote Mainte-
Describes the steps, reference standards, and troubleshooting procedures of
nance
remote maintenance for the radio network controller.
Chapter 3, Site Mainte-
Describes the steps, reference standards, and troubleshooting procedures of
nance
local maintenance for the radio network controller.
Related Documentation
The following documentation is related to this manual:






Personal Health and Safety Information
System Security Information
Radio Network Controller Hardware Description
Radio Network Controller Hardware Installation Guide
Radio Network Controller Parts Replacement Guide
NetNumen U31 R18 Unified Element Management System Maintenance Management Operation Guide
Conventions
This manual uses the following conventions.
III
Symbol
Description
Caution: indicates equipment or environment safety information. Failure to comply can
result in equipment damage, data loss, equipment performance degradation, environmental contamination, or other unpredictable results.
Notice does not involve personal injury.
Note: provides additional information about a topic.
IV
Chapter 1
Overview
Table of Contents
Reference Documents..................................................................................................................1
Tools............................................................................................................................................. 1
Prerequisites................................................................................................................................. 2
Routine Maintenance Intervals.....................................................................................................2
Routine maintenance refers to active maintenance operations performed regularly when the devices are operating properly. Routine maintenance aims to detect hidden problems, prevent accidents, and handle problems in a timely manner through periodic check of the operational state
of devices.
1.1 Reference Documents
Before performing routine maintenance, ensure that you have read the following manuals:






Personal Health and Safety Information
System Security Information
Radio Network Controller Hardware Description
Radio Network Controller Hardware Installation Guide
Radio Network Controller Parts Replacement Guide
NetNumen U31 R18 Unified Element Management System Maintenance Management Operation Guide
You also need the following documents for reference from the device manufacturers or suppliers:

Documents about power and battery checks

Documents about air conditioning system check
1.2 Tools
Before performing routine maintenance, ensure that the following tools are available:

UME client

Antistatic cloth for cleaning

Insulation tape
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
Multimeter

Flat head screwdrivers and crosshead screwdrivers

AC power supply for maintenance
1.3 Prerequisites
Before performing routine maintenance, ensure that the following conditions are met:

At least one antistatic wrist strap is available.

The access permission and all necessary entrance control keys are obtained.

The routine maintenance requests are received.
1.4 Routine Maintenance Intervals
For routine maintenance items and the corresponding intervals, refer to Table 1-1.
Table 1-1 Routine Maintenance Intervals
Maintenance Item
Interval
Checking the communication links between the NE
At least once per day
and the UME
Querying active alarms
At least once per day
Querying historical alarms
At least once per day
Querying KPIs
At least once per day
Querying operation logs
At least once per day
Checking the clock state
As required or at least once per week
Checking the OMP
As required or at least once per week
Analyzing historical alarms of the past week
As required or at least once per week
Analyzing performance indicators
As required or at least once per week
Backing up NE data
During system upgrade or once per week
Checking board software version information
As required or at least once per month
Checking board hardware version information
As required or at least once per month
Checking the power supply
For the power supply and batteries, check them by
following the instructions of the manufacturer or supplier. For other power supply devices, check them
during a site visit due to other reasons or at least
once per half a year.
Checking the grounding condition
At least once per half a year or every time when you
visit the site
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1 Overview
Maintenance Item
Interval
Checking LED indicators
At least once per half a year or every time when you
visit the site
Checking the operational state of the fan subrack
At least once per half a year or every time when you
visit the site
Checking the antistatic wrist straps
At least once per half a year or every time when you
visit the site
Checking protective caps on optical interfaces of
At least once per half a year or every time when you
boards
visit the site
Checking the cabinet doors
At least once per half a year or every time when you
visit the site
Checking cable connections
At least once per half a year or every time when you
visit the site
Checking the cable trays
At least once per half a year or every time when you
visit the site
Checking the air conditioning system
According to the instructions of the equipment manufacturer or supplier
Checking the equipment room environment alarms
At least once per half a year or every time when you
visit the site
Checking temperature in the equipment room
At least once per month or every time when you visit
the site
Checking humidity in the equipment room
At least once per month or every time when you visit
the site
Checking the burglar meshes, doors, and windows of
At least once per half a year or every time when you
the equipment room
visit the site
Checking illumination in the equipment room
At least once per half a year or every time when you
visit the site
Checking firefighting facilities in the equipment room
At least once per half a year or every time when you
visit the site
Cleaning the equipment room
At least once per month or every time when you visit
the site
Cleaning the equipment
At least once per month or every time when you visit
the site
Cleaning the air filters
At least once per half a year or every time when you
visit the site
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
Maintenance Item
Interval
Checking the GPS devices on the site
At least once per half a year or every time when you
visit the site
Note
The above intervals are recommended values. You can also adjust them in accordance with the operating
environment of the equipment room.
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Chapter 2
Remote Maintenance
Table of Contents
Daily Routine Maintenance.......................................................................................................... 5
Weekly Routine Maintenance.....................................................................................................13
Monthly Routine Maintenance....................................................................................................17
Remote maintenance involves the following items:

Check the communication link between the NE and the UME to verify that the NE is communicating with the UME properly.

Check the active alarms, historical alarms, KPIs, and operation logs, and analyze historical
alarms of the past week and performance indicators to see whether there the data is normal.

Check the alarm box to prevent the problem that alarms cannot be reported to the UME.

Check the clock state and check whether the clock is synchronized to prevent problems
such as NE clock errors and clock out-of-sync between the NE and the UME.

Check the OMP to verify that there are no abnormal alarms or resetting information.

Back up configuration data to provide data basis for data rollback and data recovery.

Check board software version information and board hardware version information to verify
that the software and hardware are operating properly.
2.1 Daily Routine Maintenance
2.1.1 Checking the Communication Links Between the NE and the UME
Steps
1. On the home page of the UME system, click the RAN Element Management APP. The
RAN Element Management window is displayed, in which the NE Tools page is displayed
by default.
2. In the NE list, select an NE and check the connection state of the NE. If the connection state
is "Broken", it indicates that the link between the NE and the UME failed to be established.
Reference Standard
The NE is communicating with the UME system properly.
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Troubleshooting
1. If the link establishment fails, verify that the connections between the UME server and the
NE are normal and the cables are not damaged. Verify that the HUB and switch are powered on properly and they are operating properly.
2. Verify that the OMP data and version configurations are correct on both the NE side and
UME side and the configurations on the two sides are the same.
3. Switch over the active and standby OMP boards.
Note
During the switchover, a large amount of data needs to be backed up, causing the service access capability to become poor, service interruption, or performance file loss. Therefore, it is recommended
that you perform the switchover operation after careful consideration.
4. Reset the OMP board.
Note
Resetting the OMP board may cause service interruption. If it is required to reset the OMP board, you
must reset the OMP board during the hours when the traffic is minimum at night.
5. Extract and insert the OMP board to verify that it has good contact. If the problem still exists,
replace the board and perform troubleshooting.
6. Check whether the OMP board is operating properly. Check the indicators on the OMP
board. If the HOST indicator is flashing green at 1 Hz and the OK indicator is flashing green
at 1 Hz, it indicates that the OMP board is operating properly. Otherwise, it indicates that the
OMP board fails to operate properly, and you need to replace the board and perform troubleshooting.
2.1.2 Querying Active Alarms
Abstract
This procedure describes how to query the active alarms that satisfy the query conditions in the
UME system. None of the query criteria are mandatory. If a query criterion is not configured, by
default, all options of this criterion are selected.
The alarm system of the UME outputs alarm information in forms of sound, light, and screen
output. The alarms involve a large amount of information about hardware, links, trunks, and
CPU load. You can analyze and locate faults through alarm information in routine maintenance.
You can use the following methods to quickly query active alarms in the UME system:

6
Querying active alarms by custom query conditions.
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2 Remote Maintenance

Querying active alarms by existing query condition templates.

Query alarms by level.
Steps
1. On the home page of the UME system, click the Alarm Management APP. The Alarm
Management page is displayed.
2. Select Active Alarm > Alarm Monitor from the function navigation tree. The Alarm Monitor page is displayed, see Figure 2-1.
Figure 2-1 Alarm Monitor Page
3. Click the Condition Query button and configure the query parameters. Table 2-1 describes
the query parameters.
Table 2-1 Descriptions of Query Parameters
Parameter
Description
Severity
Select one or multiple alarm levels.
Occurrence Time
Time when the alarms are raised on the NE side.
Alarm Code
Click Select and in the To Select area, enter an alarm code or alarm name in
the search box to query the alarm, or select an alarm from the alarm navigation tree.
Click
. The selected alarm is moved to the Selected area on the right.
Ack State
Select the acknowledgment state as needed.
Visibility
Select the visibility as needed. Options: Visible and Invisible.
By default, only visible alarms are displayed. To check all the alarms, select
both Visible and Invisible.
Relation Flags
Options: Root and Auxiliary. Select one option or both options as needed.
Root: alarms triggered by faults or exceptions.
Auxiliary: alarms derived from root alarms.
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Parameter
Description
Resource
Options: By Type and By Object.
 By Type: You can query the alarms of one or more MOCs.
 By Object: You can query the alarms by group or by NE object.
4. (Opitonal) Click Advanced Condition and configure the the advanced query parameters.
Table 2-2 describes the advanced query parameters.
Table 2-2 Descriptions of Advaced Query Parameters
Parameter
Description
Comment
Enter the comment.
ME IP
IP address of the NE to be queried.
Ack User
Enter the username for acknowledging the alarms.
Aid
Enter the serial number.
Specific Problem
Enter the alarm causes.
Clear State
Select the clear state as needed.
Alarm Type
Select the alarm types as required.
Time Zone
Select time zone, including Client time zone and ME time zone.
Changed Time
Time carried in the update message reported by the NE
Ack Time
Time when the alarms are acknowledged on the NE side
Server Time
Time when the alarms are stored on the UME side
Sort Order
Select DESC or ASC as needed, and then select the column-based sorting
method. Options: Server Time, Occurrence Time, Alarm Severity, Alarm
Type, and Alarm Code.
Visualation Identification
Select Select All, PNF or VNF.
Maintain Status
Select NEmaintenance status, including Select ALL, Normal, Maintence or
NewME.
5. Click Query. The query is started.
Querying active alarms by existing query condition templates
6. Click the Condition Template drop-down list, and select a condition template as needed.
The system automatically queries the alarms that meet the query condition.
Query alarms by level
7. Click the arrow next to Severity in the Querying Info area. The name of the selected alarm
level is displayed.
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Troubleshooting
Contact relevant personnel to handle and acknowledge the uncleared alarms, and analyze and
acknowledge the alarms that are automatically cleared.
2.1.3 Querying Historical Alarms
Abstract
This procedure describes how to query the historical alarms that satisfy the query conditions
configured in the UME system. None of the query criteria are mandatory. If a query criterion is
not configured, by default, all options of this criterion are selected.
You can use the following methods to quickly query historical alarms in the UME system:

Querying historical alarms by custom query conditions

Querying historical alarms by existing query conditions
Steps
1. On the home page of the UME system, click the Alarm Management APP. The Alarm
Management page is displayed.
2. Select History Alarm > Alarm Query from the function navigation tree. The Alarm Query
page is displayed, see Figure 2-2.
Figure 2-2 Alarm Query Page
3. Use one the following methods to quickly query historical alarms.

Querying historical alarms by custom query conditions
a. Click Advanced. The advanced filtering page for alarm query is displayed.
b. Set the query parameters as needed. For a description of the parameters, refer to Table 2-3.
Table 2-3 Descriptions of Query Parameters
Parameter
Description
Resource
Options: By Object and By Type.
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Parameter
Description
Object Type
When Resource is set to By Object, set this parameter to determine
whether to query alarms by group or by NE object.
MOC
When Resource is set to By Type, set this parameter to select the NE
types of which the alarms are queried.
Alarm Code
In the To Select area, enter an alarm code or alarm name in the search
box to query the alarm, or select an alarm from the alarm navigation
tree.
Click
. The selected alarm is moved to the Selected area on the
right.
Occurrence Time
Time when the alarms are raised on the NE side.
Ack Time
Time when the alarms are acknowledged on the NE side.
Clear Time
Set the alarm clear time to all, last N days, or a specific time segment.
Server Time
Time when the alarms are stored on the UME side.
Changed Time
Time carried in the update message reported by the NE.
Duration Time
Set the duration to all or a specific time segment.
Ack State
Select the acknowledgment state as needed.
Alarm Severity
Select one or multiple alarm levels.
Relation Flags
Options: Root Alarm and Auxiliary Alarm. Select one option or both
options as needed.
Root Alarm: alarms triggered by faults or exceptions.
Auxiliary Alarm: alarms derived from root alarms.
Alarm Type
Select the alarm types as required.
Clear Type
Select the clear types as required.
Ack User
Enter the username for acknowledging the alarms.
Aid
Enter the serial number.
Comment
Enter the comment.
Specific Problem
Enter the alarm causes.
Query By Relate ME
Select Yes or No as needed.
ME IP
IP address of the NE to be queried.
Maintain Status
Select NEmaintenance status, including Select ALL, Normal, Maintence or NewME.
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Parameter
Description
Virtualization Identifica- Select Select All, PNF or VNF.
tion
Sort Column
Select the column-based sorting method. Options: Clear Time, Occurrence Time, Alarm Severity, Alarm Type, and Alarm Code.
Sort Order
Select DESC or ASC as needed.
c. Click Query. The query is started.

Querying active alarms by existing query conditions
Click the Conditions drop-down list, and select a condition as needed. The system automatically queries the alarms that meet the query condition.
Troubleshooting
Contact relevant personnel to handle and acknowledge the uncleared alarms, and analyze and
acknowledge the alarms that are automatically cleared.
2.1.4 Querying KPIs
Steps
Query KPIs of the NE. For operation details, refer to Section "Historical Performance Data
Query" in the Performance Management Description manual.
Reference Standard
You can customize KPIs in accordance with the actual network state and assessment standard.
Troubleshooting
Analyze the KPIs. If some KPIs exceed the limits, perform troubleshooting for network problems.
2.1.5 Querying Operation Logs
Abstract
The operation logs of an NE record the operations performed by the O&M personnel on the devices, and are often used for troubleshooting.
O&M personnel look through and save operation logs every day to discover problems during
system operation and check whether there are any incorrect operations.
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Steps
1. On the home page of the UME system, click the Log Management APP. The Log Query
page is displayed by default, see Figure 2-3.
Figure 2-3 Log Query Page
2. On the Operation Log tab, set the query conditions for querying the corresponding operation log information.
3. (Optional) Click Export Result. The query result is exported to the local disk as a file in
.csv, .txt, or .xlsx format.
Reference Standard
If there are no records of unknown data configuration operations or reset operations in an operation log, the log information is normal.
Troubleshooting
If an operation log contains records of data configuration operations, find out who performed the
operations and check whether the operations were correct.
If there are records of maintenance operations, including board resetting, board switchover, link
blocking, SS7 link deactivation, signaling point/subsystem disabling, and port loopback, find out
the causes.
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2.2 Weekly Routine Maintenance
2.2.1 Checking the Clock State
Steps
1. Check whether there are clock alarms.
a. On the home page of the UME system, click the Alarm Management APP. The Alarm
Management page is displayed.
b. Select Active Alarm > Alarm Monitor from the function navigation tree. The Alarm
Monitor page is displayed, on which you can see whether there are clock alarms.
2. Check whether the local time of the controller is the same as the clock of the UME system.
a. On the home page of the UME system, click the RAN Element Management APP. The
RAN Element Management window is displayed, on which the NE Tools page is displayed by default.
b.
Select an NE, and click the icon of RANCLI (
). The command line window is dis-
played.
c. Enter the QRY NTPTIME command to check whether the local time of the controller is
the same as the clock of the UME system.
Troubleshooting
1. Verify that the T/C indicators on the EGFS, EXFS1a, and EXFS1c boards are lit, which indicates tracing state.
2. Verify that the external clock cables on the EGFS, EXFS1a, and EXFS1c rear boards are
connected properly.
The EGFS, EXFS1a, and EXFS1c boards obtain clock information from the IU port. Verify that the clock input interfaces of the EGFS, EXFS1a, and EXFS1c boards are connected correctly, the connections are the same as the configurations, the connectors have good
contact.
3. Perform active/standby switchover for the EGFS, EXFS1a, and EXFS1c boards.
4. Replace the boards.
2.2.2 Checking the OMP
Steps
This procedure uses a UMTS device as an example.
1. Check the CPU usage.
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a. On the home page of the UME system, click the RAN Element Management APP. The
RAN Element Management window is displayed, on which the NE Tools page is displayed by default.
b.
Select an NE, and click the icon of RANCLI (
). The command line window is dis-
played.
c. Enter the QRY CPUUSERATE command to query the CPU usage.
2. Check whether there are OMP alarms.
a. On the home page of the UME system, click the Alarm Management APP. The Alarm
Management page is displayed.
b. Select Active Alarm > Alarm Monitor from the function navigation tree. The Alarm
Monitor page is displayed, on which you can see whether there are OMP alarms.
3. Get the device print files, and check the Exc_Omp.txt and Exc_pp.txt files to see
whether they are updated.
a. On the OMM, execute the ftp command to connect the OMP, The user name is "ftpuser” while the password is "ftp123", and the port number is 21.
b. Execute the cd /IDE0 command to enter the IDE0 directory.
c. Execute the get command to get the Exc_Omp.txt and Exc_pp.txt files.
d. After the files are downloaded to the OMM server, use an FTP tool, such as the
CUTEFTP, to transfer the files to the client.
Note
Do not overwrite the failure record files obtained from the left OMP.
Reference Standard
There are no alarms. It is recommended that the CPU usage be not larger than 80%. There is
no newly added information about abnormal resetting in the Exc_Omp.txt and Exc_pp.txt
files.
Troubleshooting
1. If the CPU usage is too high, check whether it is during peak hours.
2. Open the Alarm Management page in the UME system to view alarm information.
3. Perform active/standby switchover for the OMP boards or CDR boards. (For GSM devices,
perform switchover for the OMP boards or RCP boards.)
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2 Remote Maintenance
Note
It is recommended that you perform the operation during time periods when the traffic is (very) low at
night.
4. Reset the OMP board or CDR board.
Notice
Resetting the OMP board or CDR board may cause service interruption. If it is required to reset the
board, you must reset the board during the time periods when the traffic is minimum at night.
5. Extract and insert the board, and verify that it has good contact. If the problem still exists, replace the board and perform troubleshooting.
2.2.3 Analyzing Historical Alarms of the Past Week
Steps
For how to query the historical alarms of the past week, refer to Section "Querying Historical
Performance Data by Customized Conditions" in the Fault Management Operation Guide
manual.
Troubleshooting
Analyze historical alarms as needed.
2.2.4 Analyzing Performance Indicators
Steps
For how to query performance indicators of the NE of the past week, refer to Section "Historical
Performance Data Query" in the Performance Management Description manual.
Reference Standard
1. KPI data can be reported to the back end properly.
2. Performance measurement data can be reported properly.
3. The performance statistics result can be used to generate a report, in which all indicators
are normal.
Troubleshooting
Verify that the data configuration is correct and hardware is operating properly.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
2.2.5 Backing Up NE Data
Steps
1. Log in to the UME system as the system administrator, and click RAN Configuration Management APP. The RAN Configuration Management window is displayed, in which the
General Configuration page is displayed by default.
2. On the RAN Configuration Management page, select NE Backup Restoration > Backuping NE Data from the function navigation tree. The Backuping NE Data page is displayed.
3. In the Basic Information area, enter the backup file name in the File Prefix text box. The
system backs up the data to the server by default.
Note
 By default, the name of the NE backup file does not include NE information. It is recommended
that you add the NE information to the backup file name for identification.
 Select Native and Server to back data to both the local disk and server.
4. In the NE List area, select the NE type from the ManagedElement Type drop-down list,
and click Select NE. The Select NE page is displayed.
5. Select the NEs, and click Confirm.
Note
 The system supports searching for a specific NE by using advanced query conditions.

You can click the Filter by column icon (
in the NE list by column.
) to search for the NEs meeting the query conditions
6. Click Backup. The system starts backing up NE data and exports the backup file to the
specified location.
Notice
It is prohibited to modify NE data backup files. Modifying an NE data backup file may damage the file,
and the data in the file cannot be recovered to the NE.
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2 Remote Maintenance
2.3 Monthly Routine Maintenance
2.3.1 Checking Board Software Version Information
Steps
1. On the home page of the UME system, click the RAN Element Management APP. The
RAN Element Management window is displayed, in which the NE Tools page is displayed
by default.
2.
Select an NE, and click the icon of RANCLI (
). The command line window is dis-
played.
3. Enter the QUERY RUNNING command to query board software version information.
For example, to query the running version information of CPU 1 in slot 1 of shelf 3 of rack 1
of subnet 40, execute the following command:
QUERY RUNNING:MEID=40,PHYSADDRESS=""1/3/1/1""
Troubleshooting
If the version of the software running on a board is different from that configured, or if the version of the software running on the base station is different from that configured in the database, upgrade the software as needed.
2.3.2 Checking Board Hardware Version Information
Abstract
Hardware version information includes positions and types of physical boards, and hardware
version information.
Steps
1. On the home page of the UME system, click the RAN Element Management APP. The
RAN Element Management window is displayed, in which the NE Tools page is displayed
by default.
2.
Select an NE, and click the icon of RANCLI (
). The command line window is dis-
played.
3. Enter the QRY HARDVERINFO command to query board hardware version information.
For example, to query the running version information of CPU 1 in slot 1 of shelf 3 of rack 1
of subnet 40, execute the following command:
QRY HARDVERINFO:MEID=40,RACK=1,SHELF=3,SLOT=1,CPU=1
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Chapter 3
Site Maintenance
Table of Contents
Checking the Power Supply System..........................................................................................19
Checking NE Devices................................................................................................................ 20
Checking Cables........................................................................................................................ 22
Checking the Equipment Room Environment............................................................................ 23
Site Cleanup............................................................................................................................... 28
Checking the GPS/GLONASS Devices on the Site...................................................................31
Operations Before Leaving a Site..............................................................................................31
Site maintenance involves the following items:

Check the power supply and grounding conditions to verify that the power supply system is
operating properly.

Check the LED indicators and the operational state of the fan subrack to verify that the
equipment is operating properly.

Check the antistatic wrist straps, protective caps on optical interfaces, and the cabinet doors
to verify that the antistatic and dust-proof facilities are complete and in good condition.

Check cable connections and cable trays to verify that both internal and external cables are
connected correctly and routed properly.

Check the air conditioning system, and environmental alarms, temperature, humidity, burglar meshes, doors, and windows, illumination, and firefighting facilities of the equipment
room to verify that the equipment room environment is in good condition.

Clean the equipment room, equipment, and air filters to verity that the equipment room and
equipment are clean.

Check the GPS devices on the site to verify that the GPS antennas, feeders, and brackets
are secured without obstacles or corrosion.
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3 Site Maintenance
3.1 Checking the Power Supply System
3.1.1 Checking the Power Supply
Steps
1. Check the power supply and batteries in accordance with the instruction manuals provided
by the manufacturers and suppliers.
2. Check the -48 V power supply of the rack. Use a multimeter to measure the voltage on the
input terminal of the power distribution subrack of the cabinet.
3. Check the power cables and connection points from top to bottom inside the rack.
4. Verify that the power cable is connected to the PDU properly and the power cable is connected to the shelves properly.
Reference Standard
1. The power supply of the rack is operating properly.
2. The power cable is not aged.
3. The connection points are not corroded.
3.1.2 Checking the Grounding Condition
Steps
1. Verify that the grounding cables (PGND, -48 VGND), grounding bars, and the DDF grounding cables are connected safely and reliably.
2. Use an earth resistance tester to measure and record the earth resistance.
3. Verify that the PDU and the power supply of the shelf are grounded properly, and verify that
the voltage difference between the -48 V RTN and the protective ground is not larger than
0.5 V.
Reference Standard
1. All connecting points are safe, reliable, and are not corroded.
2. The grounding cables are not aged.
3. The grounding bars are not corroded and proper anti-corrosion measures are taken.
4. The joint ground resistance is lower than 1 Ω.
Troubleshooting
1. Verify that the grounding bar is operating properly.
2. Check the grounding cables, and replace the aged grounding cables if there are any.
3. If there are connectors that are slightly corroded, remove the corrosion. If the corrosion is
serious, replace the relevant components.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
4. Measure the joint ground resistance, and ensure that it is less than 1 Ω.
3.2 Checking NE Devices
3.2.1 Checking LED Indicators
Abstract
Each board has the corresponding running indicators and state indicators. Some boards also
have function indicators and feature indicators. The indicators not only reflect the operational
states of the corresponding boards but also indicate the operational states of board connections, optical connections, nodes, channels, and active/standby boards. They provide an important reference for equipment maintenance and fault locating.
Steps
Verify that the LED indicators of boards are in normal states.
The common indicator states are described as follows:

If a board is operating properly, the HOST indicator is flashing at 1 Hz, and the OK indicator
is flashing green at 1 Hz.

If the active/standby indicator (ACT) is solid on, it indicates that the board is the active one.
If the indicator is not lit, it indicates the board is the standby one. This indicator is used for
locating active/standby switchover faults.
For detailed information about the LED indicator states, refer to the Radio Network Controller
Hardware Description manual.
3.2.2 Checking the Operational Sate of the Fan Subrack
Abstract
The fan subrack has monitoring and automatic speed-adjustment functions, and implements air
cooling by providing a closed air duct to enable wind to come from the front and heat to dissipate from the rear in the cabinet.
Steps
1. Verify that there are no alarms related to fan unit failure.
2. Verify that all fans are operating properly and there is no abnormal noise.
3. Clean the fans periodically.
Reference Standard
The fan subrack does not have any alarm and is operating properly.
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3 Site Maintenance
Troubleshooting
If a fan fails to operate properly, replace it with a new one.
3.2.3 Checking the Antistatic Wrist Straps
Abstract
In a dry environment, the static electricity carried by the human body can generate high-voltage static electricity. When an operator carrying static electricity touches an electronic device,
a discharge may occur and may cause damage to the device. Wearing an antistatic wrist strap
enables you to release the static electricity from your body and avoid damage to the devices.
Therefore, you must wear an antistatic wrist strap and connect one end of it to a grounding terminal before touching any device or holding a plug-in card, circuit card, or IC chip.
Steps
Verify that the antistatic wrist straps on all racks are installed properly and have good contact.
3.2.4 Checking Board Panels
Steps
1. Verify that all empty slots are installed with blank panels.
2. Verify that the screws on all board panels are secured tightly.
Troubleshooting
To ensure heat dissipation, install blank panels on all empty slots.
3.2.5 Checking Protective Caps on Optical Interfaces of Boards
Steps
Verify that all unused optical interfaces on the boards are covered with protective caps.
Troubleshooting
Install protective caps on the unused optical interfaces on the boards.
3.2.6 Checking the Cabinet Doors
Steps
Verify that the front door and the rear door of the cabinet are closed.
Troubleshooting
If the front door or the rear door of the cabinet is open, close it properly.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
3.3 Checking Cables
3.3.1 Checking Cable Connections
Abstract
For the cable types, refer to Table 3-1.
Table 3-1 Cable Types
Location
Type
Internal cables
Clock cable
Control-panel interconnection cable
User-plane interconnection fiber/cable
PD485 cable
Power cable
Grounding cable
External cables
Monitoring cable
Transmission cable
Power cable
Grounding cable
NM Ethernet cable
Clock cable (optional)
For detailed information about cable connections, refer to the "Cables" chapter in the Hard-
ware Description manual and the “Cable Installation" chapter in the Hardware Installation
Guide manual.
Steps
1. Verify that all cables, including power cables, grounding cables, transmission cables,
jumpers are laid in good order, and the labels on these cables are firmly attached.
2. Verify that the cables are connected properly.
Troubleshooting
If any label peels off, paste a new one. Ensure that the equipment name (code) and detailed interface positions are given on the labels in the format of "rack No.-frame No.-slot No.-interface
No.” or "equipment name (code)-interface No.".
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3 Site Maintenance
3.3.2 Checking the Cable Trays
Steps
1. Verify that the cable trays are not corroded.
2. Verify that the signal cables, power cables, and grounding cables are routed correctly.
Reference Standard
1. The cable trays are not corroded.
2. The cables are routed correctly.
3.4 Checking the Equipment Room Environment
3.4.1 Checking the Air Conditioning System
Steps
Check the air conditioning system in accordance with the instruction manuals provided by the
equipment manufacturer or supplier.
Reference Standard
The air conditioning system is operating properly.
3.4.2 Checking the Equipment Room Environment Alarms
Abstract
The power distribution subrack provides the following functions:

Power distribution: The power input and output support dual-channel redundancy and provide double 3-channel input and double 10-channel output.

Short-circuit protection: Each output is configured with a circuit breaker to provide output
control and short-circuit protection.

Lightning protection: The lightning protection module inside the power distribution subrack
provides rack-level lightning protection, forming multi-level lightning protection together with
those of shelves and boards.

Power and environment monitoring: It includes power voltage monitoring, panel circuit
breaker state monitoring, access control for the rack and equipment room, and monitoring of
equipment room temperature and humidity, smoke, infrared, and lightning protection.
Prerequisite
The environmental alarm system is installed in the equipment room and the system is operating
properly.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
Steps
Check the RUN/ALM indicator on the panel of the power distribution subrack to see whether
there are environment alarms of the equipment room, including power supply system alarms,
fire alarms, and smoke alarms.
Reference Standard
For the front panel of the power distribution subrack, see Figure 3-1.
Figure 3-1 Front Panel of the Power Distribution Subrack
1. Circuit breakers for channel A
2. Circuit breakers for channel B
3. RUN/ALM indicator, 485 communication indicator (COM)
For the back of the power distribution subrack, see Figure 3-2.
Figure 3-2 Back of the Power Distribution Subrack
1. Monitoring cable
2. Power input terminal
3. Power output terminal
There are two indicators on the front panel of the power distribution subrack. For a description
of the indicators, refer to Table 3-2.
Table 3-2 Panel Indicators of the Power Distribution Subrack
Indicator
Color
Phenomenon
Duty Cycle
Description
RUN/ALM indi-
Red/green/or-
Not lit
-
The power distribution subrack has no
cator
ange
power input or the boards in the power
distribution subrack have power faults.
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3 Site Maintenance
Indicator
Color
Phenomenon
Duty Cycle
Description
Flashing green at 1
50%
The power distribution subrack is operat-
Hz
Flashing red at 1 Hz
ing properly and no alarm is raised.
50%
The power distribution subrack is operating properly but there are alarms. The
alarms may be related to voltage state,
fan state, access control state, rack temperature, equipment room temperature,
smoke, lightning arrester, or air circuit
breaker state.
Solid on orange
-
The power distribution subrack is not
configured after being initially powered
on.
COM (RS485
Red
Flashing at 1 Hz
50%
The RS485 communication link has
communication
transceiving packets, that is, data is be-
indicator)
ing exchanged between the power distribution subrack and the EGBS/EGBS2a
rear board.
Not lit
-
There is no power input or no RS485 data is being transceived.
Troubleshooting
Use different methods to handle different alarms.
1. If there are under-voltage or over-voltage alarms for the power supply system, use a multimeter to check the –48 V power supply. If the under-voltage or over-voltage problem exists,
report it to the power supply department of the operator for solution.
2. If there are fire alarms or smoke alarms, check the internal environment of the equipment
room thoroughly.
a. Check whether there is fire or smoke. If not, the alarm may be caused by the excessive
amount of particles suspended in the air. In this case, take measures to purify the air or
mask the alarm according to the environment room environment.
b. Verify that the air conditioning system is operating properly.
c. Verify that the sensors are operating properly.
d. Check whether the alarm box is faulty. If the alarm box is faulty in hardware, replace the
alarm box.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
3.4.3 Checking Temperature in the Equipment Room
Steps
Record the temperature indicated by the thermometer in the equipment room.
Reference Standard
The operating environment temperature must meet the following requirements:
1. Range of temperatures for long-term operation: 0°C to 40°C.
2. Range of temperatures for short-term operation: –5°C to 45°C.
Note
The operating temperature/humidity refers to the value measured at 1.5 m above the floor and 0.4 m in
front of the cabinet in the case of the cabinet having no front or rear protection panel. Short-term operation means operation not more than 96 consecutive hours and at most 15 cumulative days per year.
It is recommended that the environment room temperature be 18°C to 27°C.
Troubleshooting
If the temperature in the equipment room is abnormal, check the temperature setting of the air
conditioning system to ensure that it meets the operating environment temperature requirement.
3.4.4 Checking Humidity in the Equipment Room
Steps
Record the humidity indicated by the hydrometer in the equipment room.
Reference Standard
The operating environment humidity must meet the following requirements:
1. Range of relative humidity for long-term operation: 5%–85%.
2. Range of relative humidity for short-term operation: 5%–90%.
Note
If water drops are found, you should immediately take measures to adjust the humidity. It is recommended that the environment room humidity be 40% to 55%.
Troubleshooting
If the relative humidity in the equipment room is abnormal, check the humidity setting of the air
conditioning system to ensure that it meets the operating environment humidity requirement.
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3 Site Maintenance
3.4.5 Checking the Burglar Meshes, Doors, and Windows of the Equipment
Room
Steps
Verify that the burglar meshes, doors, and windows of the equipment room are in good condition.
Troubleshooting
If there is any damage to the burglar meshes, doors, or windows, replace the damaged ones
immediately.
3.4.6 Checking Illumination in the Equipment Room
Abstract
The following types of illumination systems are often used in the equipment room:

Normal illumination system supported by the mains supply.

Guaranteed illumination system supported by the standby power supply in the equipment
room.

Emergency illumination system supported by batteries. It is used when the normal illumination system fails and the guaranteed illumination system is not powered on yet.
Steps
Check the normal illumination system, guaranteed illumination system, and emergency illumination system to ensure that they are in normal state.
Reference Standard
At least one of the three illumination systems is operating properly.
3.4.7 Checking Firefighting Facilities in the Equipment Room
Steps
Check the pressure and validity periods of the fire extinguishers in the equipment room.
Reference Standard

The pressure of the fire extinguishers is within the normal range. The pressure gauge pointer points to the normal pressure range.

The fire extinguishers are within the validity periods.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
3.5 Site Cleanup
3.5.1 Cleaning the Equipment Room
Steps
Verify that the floor, computers, maintenance workbench, and the surroundings of the equipment are neat and clean in the equipment room.
Troubleshooting
Clean up the equipment room in a timely manner.
Note
 When using the vacuum cleaner, you need to cover the motor with antistatic cloth.
 Use an isolation converter to prevent the motor noise from being transmitted through the power supply
system.
 To prevent the equipment from being damaged, the pipe mouth of the vacuum cleaner should be
made of insulation materials.
3.5.2 Cleaning the Equipment
Steps
Verify that there is no cobweb or dust inside or outside the equipment in the equipment room.
Reference Standard
The inside of the equipment should be clean and tidy.
Troubleshooting
Clean the equipment, especially the dust-proof subracks, in a timely manner.
If it is necessary to remove a component, verify that the component is not in active state before
removing it. For how to remove or install a component, refer to the Radio Network Controller
Parts Replacement Guide. This operation may trigger an alarm.
Note
When using the vacuum cleaner, you need to cover the motor with antistatic cloth. You should use an isolation converter to prevent the motor noise from being transmitted through the power supply system. To
prevent the equipment from being damaged, the pipe mouth of the vacuum cleaner should be made of insulation materials.
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3 Site Maintenance
3.5.3 Cleaning the Air Filters
Abstract
The air filters should be cleaned periodically.
The front door and rear door of the cabinet are installed with air filters.
Steps
1. Perform the following operations before cleaning an air filter:

Clear away the sundries on the bottom of the cabinet, such as scraps of paper and plastic bags, to prevent the sundries from being sucked into the fan and blocking the air inlet.

Verify that the cabinet is configured with sufficient blank panels, and ensure that the
holes on the cabinet doors and the air inlets of the fan subrack are not blocked.
2. Pull out the air filters at the bottom of the cabinet.
3. Use a dry banister brush to gently wipe off dust on the surface, see Figure 3-3.
Figure 3-3 Wiping off Dust
4. Beat the edges of the air filters or use an air nozzle to remove dust from the air filters, and
use a vacuum cleaner equipped with a brush nozzle to clean the air filters, see Figure 3-4.
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ZXUR 9000 GSM Routine Maintenance Guide(UME)
Figure 3-4 Cleaning an Air Filter
5. Use a vacuum cleaner equipped with a brush nozzle to clean the dust-proof sponge on the
cabinet doors, see Figure 3-5.
Figure 3-5 Cleaning the Dust-Proof Sponge on the Cabinet Doors
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3 Site Maintenance
Note
 When you clean the air filter, do not remove the fan subrack or stop the operation of the fan.
 It is not recommended that you use water to wash the air filters.
3.6 Checking the GPS/GLONASS Devices on the Site
Steps
1. Verify that the GPS antennas or GLONASS+GPS antennas and brackets are secured tightly.
2. Verify that GPS antennas or GLONASS+GPS antennas are at their original positions and
there are no obstacles.
3. Verify that the feeder clamps are secured and are not corroded.
4. Verify that the waterproof bends and connectors of GPS/GLONASS feeders are secured
properly and the feeder connections are sealed properly.
Troubleshooting
1. Fasten the GPS antennas or GLONASS+GPS antennas and brackets tightly, and take anti-corrosion measures for the parts with corrosion.
2. Move the GPS antennas or GLONASS+GPS antennas to their original positions, and verify
that the installation positions of the GPS antennas and GLONASS+GPS antennas are within
the protection range of the lightning arrester. Verify that the vision is wide and there are no
obstacles within 150° angle of elevation.
3. Fasten the feeder clamps, and take anti-corrosion measures for the parts with corrosion.
4. Replace cracked and aged water-proof tapes and cement on feeder connections.
3.7 Operations Before Leaving a Site
Before leaving the site, perform the following operations:
1. Close the cabinet doors.
2. Close the site entrance to ensure site security.
After leaving the site, perform the following operations:
If necessary, turn in the door entrance key.
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Figures
Figure 2-1 Alarm Monitor Page............................................................................... 7
Figure 2-2 Alarm Query Page.................................................................................. 9
Figure 2-3 Log Query Page................................................................................... 12
Figure 3-1 Front Panel of the Power Distribution Subrack.................................... 24
Figure 3-2 Back of the Power Distribution Subrack............................................... 24
Figure 3-3 Wiping off Dust..................................................................................... 29
Figure 3-4 Cleaning an Air Filter........................................................................... 30
Figure 3-5 Cleaning the Dust-Proof Sponge on the Cabinet Doors....................... 30
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Tables
Table 1-1 Routine Maintenance Intervals................................................................ 2
Table 2-1 Descriptions of Query Parameters.......................................................... 7
Table 2-2 Descriptions of Advaced Query Parameters............................................ 8
Table 2-3 Descriptions of Query Parameters.......................................................... 9
Table 3-1 Cable Types.......................................................................................... 22
Table 3-2 Panel Indicators of the Power Distribution Subrack............................... 24
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Glossary
CPU
- Central Processing Unit
DDF
- Digital Distribution Frame
EGBS2a
- Enhanced GE Base Switch board 2a
EGBS
- Enhanced GE BASE Switch Board
EGFS
- Enhanced GE FABRIC Switch Board
EXFS1a
- Enhanced XGE Fabric Switch board 1a
FTP
- File Transfer Protocol
IP
- Internet Protocol
IU
- Interface Unit
NE
- Network Element
OMM
- Operation & Maintenance Module
OMP
- Operation & maintenance Main Processor
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PDU
- Power Distribution Unit
PGND
- Protection Ground
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