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Bss troubleshooting guide 1

BSS TROUBLESHOOTING GUIDE BSC RNC C TRANSMISSION BTS CBSS TROUBLESHOOTING GUIDE OSS connectivity down - both x down One X down NSEI Down BVCI Down Zero Voice calls on particular Cell Unit re-start SIGNALLING LINK OVERLOAD SIGNALLING LINK DOWN SIGNALLING LINK ACTIVATION OR RESTORATION FAILURE SIGNALLING LINK SET DOWN GPRS EDGE LOAD IS VERY HIGH IN PCU OF PSE BTS AND TC UNSYNCHRONIZATION CLEAR CALLS ON ABIS INTERFACE WDU FAULTY STMU FAULTY MCMU RESTART BCSU RESTART BCSU SWITCHOVER Iu-CS link down Both Iu-PS links down One Iu-PS link down BASE STATION FAULTY BASE STATION OPERATION DEGRADED BASE STATION NOTIFICATION CELL FAULTY CELL OPERATION DEGRADED CELL NOTIFICATION BASE STATION LICENCE NOTIFICATION BASE STATION TRANSMISSION ALARM BEATING WCDMA BTS ALARM FAILURE IN WCDMA WBTS O M CONNECTION RNW O M SCENARIO FAILURE WCDMA CELL OUT OF USE HSDPA CONFIGURATION FAILED WCDMA BTS DEDICATED MEASUREMENT FAILURE HSUPA FAILURE IN WCEL WCDMA BASE STATION OUT OF USE CBFD Down in AXC Tellabs G Sites down G or G sites down Mw ring collapsed G G multiple sites down SYNCHRONISATION IS MISSING Some Subscribers not able to latch on TATA network from speci ?c handsets Rx levels di ?er too much between main and diversity antennas RSSI detected Rx signal di ?erence exceeding EXxx TRX module cooling fan s report no rotation ESMA System module cooling fan s report no rotation ERxx DDU module has detected VSWR above minor limit at anten CS No Problem Alarm No at BSC Alarm Description Comments Catergory Service a ?ecting OSS connectivity down - both x down OSI CLNS LINKAGE NOT AVAILABLE non-Service a ?ecting One X down OSI CLNS LINKAGE NOT AVAILABLE NonService a ?ecting NSEI Down ALL NETWORK SERVICE ENTITIES UNAVAILABLE Service a ?ecting BVCI Down Service a ?ecting CService a ?ecting BVCI Down Zero Voice calls on particular Cell BTS WITH NO TRANSACTIONS SIGNALLING LINK OVERLOAD SIGNALLING LINK LOAD OVER THRESHOLD SIGNALLING LINK DOWN SIGNALLING LINK OUT OF SERVICE SIGNALLING LINK ACTIVATION OR RESTORATION FAILURE SIGNALLING LINK SET DOWN GPRS EDGE LOAD IS VERY HIGH IN PCU OF PSE FAILURE IN SIGNALLING LINK ACTIVATION OR RESTORATION LINK SET UNAVAILABLE Service a ?ecting GPRS EDGE LOAD IS VERY HIGH IN PCU OF PSE NonService a ?ecting BTS AND TC UNSYNCHRONIZ ATION CLEAR CALLS ON ABIS INTERFACE BTS AND TC UNSYNCHRONIZATION CLEAR CALLS ON ABIS INTERFACE Service a ?ecting DISK FAILURE DISK FAILURE Cnon-Service a ?ecting NO ACCESS TO DISK WDU FAULTY INCORRECT WORKING STATE STMU FAULTY HW BLOCK FAILURE IN PLUG-IN UNIT Service Threatening Service Threatening INCORRECT WORKING MCMU RESTART STATE working State Changed Unit restarted CService a ?ecting BCSU RESTART INCORRECT WORKING STATE working State Changed Unit restarted Service Threatening BCSU SWITCHOVER INCORRECT WORKING STATE working State Changed Unit Restarted Loss of Synchronization in BSC Failure in Synchronization Signal Service Threatening CA ?ect Steps to be follow for troubleshoot Check the signalling links states at MSS end If signalling links link set down means BSC down Alarm-Link Set Unavailable Send local engineer at BSC site Check