ORI001301 RAC6610 Troubleshooting and Maintenance ISSUE2.0

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ISSUEISSUE

ORI001301 RAC6610 Troubleshooting ORI001301 RAC6610 Troubleshooting and Maintenanceand Maintenance

ORI001301 RAC6610 Troubleshooting ORI001301 RAC6610 Troubleshooting and Maintenanceand Maintenance

2.02.0

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Security Level: Internal

ObjectivesObjectives

Master the handling of common RAC6610

faults

Master the routine maintenance operation

contents of RAC6610

Upon completion of this course, you will be able

to:



Course ContentsCourse Contents

Chapter 1 Overview of Operation & Maintenance

Chapter 2 Basic Troubleshooting Considerations

Chapter 3 Basic Maintenance Operations

Chapter 4 Contents of Routine Operation & Maintenance



Architecture of RAC O&M SystemArchitecture of RAC O&M System

Schematic diagram of RAC maintenance system:

Local LAN

Local WS

Local router WAN line

Remote routerRemote LAN

RAC6610



Architecture of RAC Maintenance System

Architecture of RAC Maintenance System

Schematic diagram of RAC maintenance path:

CRPS10.12.3.2

CIPS10.12.3.5

CIPS10.12.3.6

CIPS10.12.3.7

BAM10.12.3.128



Fault LocatingFault Locating

When the running state of the system is abnormal, please consider the

following factors:

Software fault

Data configuration fault

Not matchable version of software or data configuration file

Program run error

Hardware fault

Transmission or clock fault

Board damage (replace the damaged one with a board of the same soft

ware and hardware version and conduct test)

Backplane slot fault: Select another slot and conduct test (please modi

fy the corresponding data)



Operation & Maintenance ProcessOperation & Maintenance Process

Common maintenance process of RAC system:

Obtain system running

information

Judge system running state

Handling

View alarm information

View indicators

View traffic statistics

Subscriber complaint

……

View alarm information

View indicators

View traffic statistics

Subscriber complaint

……

Alarm analysis

Traffic statistics analysis

Fault judgment

……

Alarm analysis

Traffic statistics analysis

Fault judgment

……

Check line

Adjust parameters

Reset board

Replace parts

……

Check line

Adjust parameters

Reset board

Replace parts

……



QuestionsQuestions

Briefly describe the process of RAC

maintenance

Briefly describe common fault locating



SummarySummary

Common fault locating

Common equipment maintenance





Section 1 loading fault locatingSection 1 loading fault locating

Section 2 Transmission or Clock

synchronization fault locating

Section 3 Voice fault locating

Section 4 Signaling fault locating



Loading Fault PhenomenaLoading Fault Phenomena

The RUN indicator of the board has been flashing rapidly with

the frequency of 4HZ

Repeated loading

No loading information in the loading Windows

……



Frame loading Fault HandlingFrame loading Fault Handling

Set the boards in the CIPS frame as an example:

CMUX

CFMR

Whether the route configuration on BAM is correct?Whether each process of the BAM works normally?Whether the storage path of the loading file is correct?Whether the version of the loading file is correct?

CRMS

Whether the slot number used is consistent with data configuration?Whether the DIP switch setting of frame is correct?

IP address of the operation & maintenance: 10.12.3.5

Whether the cables are normal?

… … …

SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0

High Row

OFF-1 ON-0





Section 1 loading fault locating

Section 2 Transmission or Clock Section 2 Transmission or Clock

synchronization fault locatingsynchronization fault locating





Clock Fault HandlingClock Fault Handling

•There are two kinds of synchronization in RAC6610:

• Transmission synchronization and time synchronizationThe transmission synchronization refers to the synchronization

between the RAC and LE. The BITS clock can be used.The time synchronization refers to the synchronization between

the RAC and the CBTS. The GPS or GPS/GLONASS dual-

satellite synchronization system is used for both the RAC and

CBTS so as to keep synchronization with the RFN (Radio Frame

Number)



RAC Clock System StructureRAC Clock System Structure



Time Synchronization Fault PhenomenaTime Synchronization Fault Phenomena

The CPU occupation ratio of the DSP chip on the CFMR is 0.

Imperfect voice quality

Call failure

Handoff failure



Time Synchronization Fault HandlingTime Synchronization Fault Handling

TXRX

ETH

1PPS

COM1

COM2

RUN

ALM

ACT

RESET

7#CMUX(CRPS)

CLK1

CLK2

E1/T1

E1/T1

E1/T1

E1/T1

RUN

ALM

ACT

CAIE

GCKP

RUNALM ACT COM IN0 IN1 TEST ANT

ETH_BCOM_BCLK_B ETH_ACOM_ACLK_A

GCKB

TXRX

ETH

1PPS

COM1

COM2

RUN

ALM

ACT

RESET

8#CMUX(CRPS)

Whether the connections are

normal?

Whether the lightening

arresters are broken?



Transmission Synchronization Fault Phenomena

Transmission Synchronization Fault Phenomena

Frame slip alarm

Poor voice quality and possible noise

Call interruption

……



Time Synchronization Fault Handling(1)Time Synchronization Fault Handling(1)

TXRX

ETH

1PPS

COM1

COM2

RUN

ALM

ACT

RESET

7#CMUX(CRPS)

CLK1

CLK2

E1/T1

E1/T1

E1/T1

E1/T1

RUN

ALM

ACT

CAIE

GCKP

RUNALM ACT COM IN0 IN1 TEST ANT

ETH_BCOM_BCLK_B ETH_ACOM_ACLK_A

GCKB

TXRX

ETH

1PPS

COM1

COM2

RUN

ALM

ACT

RESET

8#CMUX(CRPS)

Whether the cable is normal?

Whether the cable is normal?








Section 3 Voice fault locatingSection 3 Voice fault locating




Voice Fault PhenomenaVoice Fault Phenomena

MS origination or termination failure

Soft handoff failure

Poor voice quality

Single pass

Severe echo

……



Voice Fault HandlingVoice Fault Handling

CMUX

CXIE

CFMR

CAIE

CEVC

CBTS

LE

Whether E1 state of Abis interface is normal?

Whether the configuration data of CBSC and CBTS is consistent such as traffic VPI,VCI,VCCI

?

Whether I00FMR0.dsp is loaded correctly?

Whether the states of DSPs on CFMR are normal?

E1 cableE1 cable

CMUX

CRMU

CLIU

Whether E1 state of V5 interface is

normal?

Whether transmission synchronization configuration is correct?

Whether the clock cables are connected correctly?









Section 4 Signaling fault locatingSection 4 Signaling fault locating



Signaling Fault of Abis InterfaceSignaling Fault of Abis Interface


No signaling messages traced at the Abis interfa

ce

Continuously updated overall message

……



Fault Handling of Abis InterfaceFault Handling of Abis Interface

Except transmission fault, generally the signaling fault of the Abis i

nterface is caused by data configuration error of the Abis interface.

In the meantime, possibly such fault is caused by the CSPU .We ca

n trace Abis interface signaling, replace boards or modify data to c

onduct fault locating.

SIG

CSPU

Whether the E1 state between the CXIE and BCIM is normal?

Whether the signaling IP addresses of the RAC and CBTS are configured correctly and consistent?

Whether signaling PVCs of the RAC and CBTS are configured correctly and consistent?

Whether the Local Cell ID , Local Sector ID Carrier ID are consistent between RAC and CBTS?



Signaling Fault of V5 InterfaceSignaling Fault of V5 Interface


Unavailable signaling points

Signaling link fault

No signaling messages traced at V5 interface or error

occurring in message interpretation.

……



Fault Handling of V5 Interface(1)Fault Handling of V5 Interface(1)

V5 interface

V5 LNK

C Channel

V5 BAport

Is the state of signaling timeslot normal?

Is the state of LNK normal?

Is C channel normal?

Is the V5 BAport normal?

Protocol stack of V5 interface

Protocol stack of V5 interface

CSPUCSPU

Processing cards in each layer

Processing cards in each layer

CLCB

Except transmission fault, generally the signaling fault of the V5 interface is

caused by data configuration error. In the meantime, such fault is possibly

caused by damage of the boards such as CSPU, CLCB and CAIE. We can

trace V5 ,replace boards and modify data to conduct fault locating.

CAIECAIE



Fault Handling of V5 Interface(2)Fault Handling of V5 Interface(2)

Whether the following parameters are consistent

between CBSC and LE?

V5ID， PSTNLCCID

LINKNO

CHNNO

PROTTYPE

L3ADDR

… …



QuestionsQuestions

Briefly describe the common considerations of

loading fault locating


clock fault locating


signaling fault locating


voice fault locating



SummarySummary

Loading fault and handling

Clock fault and handling

Signaling fault and handling

Voice fault and handling



Common Frame Maintenance OperationsCommon Frame Maintenance Operations

Query frame status (DSP FRAMESTATUS)

This operation is used to query the frame state, including frame type

and the status of the CMUX, PCU, CSPU and CRMU boards in the

frame.

Reset frame (RST FRAME)

This operation is used to reset the whole frame. After this command is

executed, the CMUX board will reset first and then other boards in

the frame will reset.

Query Frame Board Information (DSP FRAMEINFO)

This operation is used to query the status of the boards in the frame,

including the run status, management status and active/standby

status.



Common Board OperationsCommon Board Operations

The system provides the following functions:

Query board information (DSP BOARDINFO)

This operation can be used to query the type, running status,

management status and active/standby status of the board

Reset board (RST BRD)

This command is used to reset a board.

Query the CPU usage (DSP CPUUSAGE)



DSP Chip Maintenance OperationsDSP Chip Maintenance Operations

DSP chip used in the CFMR and CEVC boards:

Query DSP status (DSP DSPSTAT)

Query the CPU usage of the DSP (DSP DSPCPUUSAGE)



Maintenance Operations of DSP of the CEVC Board

Maintenance Operations of DSP of the CEVC Board

Query timeslot occupation of the CEVC DSP(DSP EVCTSOCCUPY )

The following information can be obtained: A2 circuit number occupied by

current call, coding/decoding mode of current mobile station, such as,

EVRC, 8KQCELP, and the operation status of DSP timeslots.

Query IMSI timeslots (DSP IMSI)

Use the IMSI of a mobile station to query the timeslot resources and status

of the DSP chip occupied by the mobile station.

Block CEVC timeslot (BLK EVCTS)

Unblock CEVC timeslot (UBL EVCTS)

Query EC working status of a specified CEVC timeslot (DSP

ECSTATUS)



Interface Transmission Fault LocatingInterface Transmission Fault Locating

Query link status (DSP E1T1STAT)

Query the line Information in a Board

(DSP LINEINFO)



Abis Interface Maintenance OperationsAbis Interface Maintenance Operations

•Query IMA group (DSP IMAGRPSTAT) Query IMA link (DSP IMALINKSTAT)

•Block IMA group (BLK IMAGRP) Query UNI link (DSP UNILINKSTAT)

•Unblock IMA group (UBL IMAGRP) Unblock IMA link (UBL IMALINK)

•Reset IMA group (RST IMAGRP) Block IMA link (BLK IMALINK)

IMALINK 1

IMALINK 2

IMALINK n… ...

IMA GROUP

IMA GROUP

CBSC CBTS

We also have some commands for CBIE only



V5 Interface Maintenance OperationsV5 Interface Maintenance Operations

Query E1 status (DSP E1T1STAT)

Query V5 Interface (DSP V5ITF )

Reset Timeslot Channel (RST TSLOT )

Query V5 link (DSPV5LNK )

…



HDB and VDB MaintenanceHDB and VDB Maintenance

Send Cancel Register Msg (CAC REGISTER )

Send Not Reliable Roaming Indication Msg (IND NRROAM )

Query VDB User (DSP VDBUSER )

Delete VDB User (DEL VDBUSER )

Query VDB Status (DSP VDBDB )



Common Radio Resource Management Operations

Common Radio Resource Management Operations

Block sector carrier (DSP RES)

Query the status of the sector resources, including:

Management status

Operation status

Use status

Block sector resources (BLK RES)

There are three levels of operations: High, Common and Low

Unblock sector resources (UBL RES)



SummarySummary

Board maintenance

Frame maintenance

DSP maintenance

Interface maintenance

Radio resource management



Objectives of Routine Operation and Maintenance

Objectives of Routine Operation and Maintenance

Objectives of routine operation and maintenance

Periodically detect the running status of the equipment, take the

initiative in network analysis, take the corresponding measures

and remove hidden troubles in time.



Contents of Routine Operation & Maintenance in Equipment RoomContents of Routine Operation & Maintenance in Equipment Room

Environment

Check whether the environment alarm of the equipment room, including

the power system, fire alarm and smoke, and check whether the facilities

such as theft-guard net, door and windows in the equipment room are in

perfect status.

Temperature

Observe the indication of the thermometer in the equipment room Normal

temperature is between 15ºC and 30ºC

Humidity

Observe the indication of the hygrometer in the equipment room.

Normal relative humidity is between 40% and 65%.

Dustproof

Observe the equipment shell, floor and desktop in the equipment room



Daily Maintenance Contents of Running StatusDaily Maintenance Contents of Running Status

Query board running status

Activate the Airbridge MML Client and use related command to que

ry the running status of each board .



Daily Maintenance Contents of the Functional Subsystem

Daily Maintenance Contents of the Functional Subsystem

Performance statistics

Register the performance statistic items, extract and report the

performance statistic results.

Alarm system

The four keys (UP, DOWN, LEFT and RIGHT) on the front panel of

the alarm box can be used to query the alarm level of each module

and the alarm options of the corresponding functional subsystem.

To locate the alarm accurately, enter the alarm management

console to query.



Monthly Maintenance Contents of Terminal

Monthly Maintenance Contents of Terminal

Disk collation

Check the number of disk fragments in Disk C and D in the BAM and

run the disk clean program and Disk Defragmenter.;

Check whether the BAM disk has enough space

Running status

Check the running status and data synchronization of backup

directories of the BAM and the emergency workstation

Communication status

Check the communication status between the BAM and WS. Use the

ping command to check the communication status of the WS.



Quarterly Maintenance Contents of the Ground cable Part

Quarterly Maintenance Contents of the Ground cable Part

Ground cable connection

Secure and reliable connections without any corrosion

No ground cable aging

The ground cable connector is free of corrosion with proper anti-

corrosion treatment.

Ground resistance test record

The joint ground resistance is less than 1 ohm.



Yearly Maintenance ContentsYearly Maintenance Contents

Data check

Check the data in the data management console, check the

normalization of data configuration, correct or supplement missing

data and conduct the corresponding call test.

Connection line check

Check whether the connections of trunk cables, network cables,

fibers and connection cables between cabinets are firm and

reliable. Make sure that various cables are in perfect state with

explicit labels.



SummarySummary

Daily maintenance contents

Monthly maintenance contents

Quarterly maintenance contents

Yearly maintenance contents

ORI001301 RAC6610 Troubleshooting and Maintenance ISSUE2.0

Documents

Transcript of ORI001301 RAC6610 Troubleshooting and Maintenance ISSUE2.0