Showing posts with label Alarm. Show all posts
Showing posts with label Alarm. Show all posts

Types of Alarm

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.

Remote OMT





The Remote OMT Over IP is used to remotely perform OMT functionality from a TCP/IP network connecting BSCs.
The Remote OMT Over IP is mainly used for:
  • Getting detailed information about an RBS 2000 - The information can be used to remotely verify that an RBS 2000 is correctly configured and to perform preventive maintenance.
  • Fault localization of an RBS 2000 - Experts can use the Remote OMT Over IP to perform fault localization and to guide service personnel at site
  • Restart of a whole RBS 2000 or a part of an RBS 2000 - The same type of restart that is achieved by pushing a reset button in an RBS 2000 can be performed with the Remote OMT Over IP. This may be useful in situations with abnormal RBS behavior
  • Retrieve detailed information about an RBS 2000 remotely from a TCP/IP network connecting BSCs.
  • Perform fault localization of an RBS 2000 remotely from a TCP/IP network connecting BSCs. This means that it will be easier to prepare for a site visit and it will be possible for experts to remotely guide service personnel at site.
  • It is possible for a BSC to simultaneously handle four Remote OMT Over IP sessions. (Only one Remote OMT Over IP can simultaneously be connected to one specific RBS).
  • Perform "hardware reset" of an RBS 2000 remotely from a TCP/IP network connecting BSCs
  • The signalling is embedded in the LAPD signalling. A whole time slot does not have to be allocated for the OMT signalling as for Remote OMT.
  • It is much easier to establish a connection for the OMT signalling as it is not needed to setup a path in the transmission network. Just an access to the IP network connected to the BSC is needed.
  • The Remote OMT Over IP does not have to be equipped with any special hardware equipment as for Remote OMT which have to be equipped with a special communication board to emulate an E1/T1 transmission link.

The Remote OMT Over IP is an optional feature activated by the BSC.
The Remote OMT Over IP user is required to make an authentication by providing a password to be able to make a connection to the RBS. The password is defined by the BSC operator at the setup of the feature. It is also possible to define how long time the feature shall be activated and also to define the IP-address which the calling Remote OMT Over IP is supposed to have.

Benefits
Remote OMT Over IP makes it possible to:
Benefits with Remote OMT Over IP compared to Remote OMT:

BTS Fault Alarm

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
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