HLR Contingency Plan (GU HLR9820 V900R003)

Two types of fault may occur:

1. Identifying fault on MAP side
2. Identifying fault on provisioning side


Things to check first:
1. DSP license
2. DSP LICRATE
3. LST BRD (For SAU or signaling) & LST SBRD (For DRU & DSU query), For Detailed of node (DSP Node, type:DSU & DRU)
4.Performance result check
5. To check LST MAPCONF & LST MAPSERV
6. To check the device panel


Typical fault scenario:
1. A large number of subscribers fail to access the network or receive calls
Possible cause:
1. FE & BE is faulty
2. DS system is abnormal
3. License is invalid
2. Provisioning system unavailable




Possible cause:
1. Communication link between system & SMU server faulty
2. TWO smu  server are faulty
3. If any DMU is faulty


Quick identification of a fault:
1.SAU (Signalling) board gets faulty:
a) Check board status
b) Check by giving command DSP Node
c)reset the corresponding load sharing board for load sharing
d/for active & standby,first reset,then swap if it not works then remove.so,the board will not process any service.


Fault between SCU(FE) & DS(BE)
a)Check the bearer network if QOS is degraded or optmt in MAP configuration is high

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