MC55_ATC_V04.00 Page 74 of 475 3/17/06
Confidential / Released
 
3.4.4 GSM release cause for Mobility Management (MM) or Session 
Management (SM)
3  Access class of the SIM is barred by the network provider
4  SABM failure
5  Radio link counter expiry or PerformAbnormalRelease
6  Confirm ABORT of the MM
7  Respond to DEACT REQ
8  Loss of coverage
9  Reestablishment not possible
Number Description
Causes related to MS identification
2  IMSI unknown in HLR
3  Illegal MS
4  IMSI unknown in VLR
5  IMEI not accepted
6  Illegal ME
Cause related to subscription options
11  PLMN not allowed
12  Location Area not allowed
13  Roaming not allowed in this location area
Causes related to PLMN specific network failures and congestion
17  Network failure
22  Congestion
Causes related to nature of request
25  PDP context is deactivated because of a LLC or SNDCP failure
32  Service option not supported
33  Requested service option not subscribed
34  Service option temporarily out of order
36  Regular PDP context deactivation
38  Call cannot be identified
Causes related to invalid messages
95  Semantically incorrect message
96  Invalid mandatory information
97  Message type non-existent or not implemented
98  Message not compatible with protocol state
99  Information element non-existent or not implemented
100  Conditional information element error
101  Messages not compatible with protocol state
111  Protocol error, unspecified
Number Description