BTS Fault Alarm

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Types of Fault Map
Internal Class 1A
Internal to BTS, affecting MO, within MO
Internal Class 1B
Internal to BTS, affecting MO, within MO environment
Internal Class 2A
Internal to BTS, not affecting MO, within MO
External Class 1
External to BTS and affecting MO
External Class 2
External to BTS not affecting MO


The alarm slogan is the description of the current alarm situation for an MO or TG. The alarm slogans 'BTS INTERNAL' and 'BTS EXTERNAL' each describe more than one alarm situation. The remaining alarm slogans each describe a unique alarm situation. This section describes how each alarm slogan should be interpreted.
TGC FAULT No active TGC application exists in the Transceiver Group.
PERMANENT FAULT A managed object is classified as being permanently faulty when fault situations have occurred, and have been cleared, a certain number of times within a certain period of time. Manual intervention is required to bring such equipment back into operation.
LOCAL MODE The BTS equipment is in Local Mode or the BTS equipment has changed from Local to Remote Mode and a fault exists in the communication link between the BSC and the BTS. Communication between the BSC and the BTS is not possible.
LMT INTERVENTION Local maintenance activities are being performed in the BTS.
LOOP TEST FAILED Test of the traffic carrying capabilities of the TS has failed.
BTS INTERNAL There is a fault internal to the BTS.
MAINS FAILURE There is a fault in the power supply to the BTS or one or more items of equipment within the BTS. Battery backup (where available) is in use. Escalation may occur if corrective action is not taken.
BTS EXTERNAL There is a fault external to the BTS.
OML FAULT There is a fault in the communications link between the BSC and BTS.
ABIS PATH UNAVAIL No transmission device exists between the BSC and BTS.
CON QUEUE CONGESTION At least one of the LAPD Concentrator concentration outlet queues has reached an unacceptable filling level.
TS SYNC FAULT Synchronization lost on uplink or downlink TRA or PCU channels.
FORLOPP RELEASE A fault has occurred within the BSC software leading to a Forlopp release. Automatic recovery procedures are taking place. Report to your Ericsson Support Office. Alternatively, this alarm is issued as an advisory following a command ordered Forlopp release of a TG. In either case, the alarm is automatically ceased following successful recovery.
OPERATOR CONDITION A condition has arisen due to operator intervention
 Abbreviations and acronyms
BSC
Base Station Controller
BTS
Base Transceiver Station
CF
Central Functions
CON
LAPD Concentrator
DP
Digital Path
IS
Interface Switch
LAPD
Link Access Protocol for the D channel
LMT
Local Maintenance Terminal
MO
Managed Object
OML
Operation and Maintenance Link
PCU
Packet Control Unit
RBS
Radio Base Station
RX
Receiver
TF
Timing Function
TG
Transceiver Group
TGC
Transceiver Group Controller
TRA
Transcoder Rate Adaptor
TRXC
Transceiver Controller
TS
Timeslot
TX
Transmitter





Comments

Unknown said…
Best documents and material for study
6 July 2016 at 19:41
Ashokraj said…
hi, Is this Alarms are for Ericsson or other Oss
27 March 2019 at 12:16
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