HI Sharma,
I checked with ETSI spec., I think the RR cause value 111 is
listed below :
│ RR cause value (octet ) │
│ Bits │
│ 8 7 6 5 4 3 2 1 │
│ 0 0 0 0 0 0 0 0 Normal event │
│ 0 0 0 0 0 0 0 1 Abnormal release, unspecified │
│ 0 0 0 0 0 0 1 0 Abnormal release, channel │
│ unacceptable │
│ 0 0 0 0 0 0 1 1 Abnormal release, timer expired │
│ 0 0 0 0 0 1 0 0 Abnormal release, no activity on │
│ the radio path │
│ 0 0 0 0 0 1 0 1 Preemptive release │
│ 0 0 0 0 1 0 0 0 Handover impossible, timing advance │
│ out of range │
│ 0 0 0 0 1 0 0 1 Channel mode unacceptable │
│ 0 0 0 0 1 0 1 0 Frequency not implemented │
│ 0 1 0 0 0 0 0 1 Call already cleared │
│ 0 1 0 1 1 1 1 1 Semantically incorrect message │
│ 0 1 1 0 0 0 0 0 Invalid mandatory information │
│ 0 1 1 0 0 0 0 1 Message type non-existent or not │
│ implemented │
│ 0 1 1 0 0 0 1 0 Message type not compatible with │
│ protocol state │
│ 0 1 1 0 0 1 0 0 Conditional IE error │
│ 0 1 1 0 0 1 0 1 No cell allocation available │
│ 0 1 1 0 1 1 1 1 Protocol error unspecified │
│ │
This means it is the Protocol error unspecified, this means a HANDOVER FAILURE message with RR cause value 111 is a scenario bug in MS, pls. list your MS message scenario for this HANDOVER FAILURE case;