GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

6.1.4.3 Parameter definitions and use
Invoke Id
See definition in subclause 5.6.1.
TMSI
See definition in subclause 5.6.2.
IMSI
See definition in subclause 5.6.2. The IMSI is to be returned if the service succeeds.
Authentication set
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GSM 09.02 version 5.3.0: August 1996
See definition in subclause 5.6.7. If the service succeeds a list of up to five authentication sets is returned,
if there are any available.
User error
This parameter is mandatory if the service fails. The following error cause defined in subclause 5.6.1 may
be used, depending on the nature of the fault:
- unidentified subscriber.
Provider error
For definition of provider errors see subclause 5.6.1.
6.1.5 MAP_DETACH_IMSI service
6.1.5.1 Definition
The MAP_DETACH_IMSI service is used by the MSC to indicate to the VLR that an MS is no longer
reachable. The network needs this information e.g. to reject an incoming call without initiating paging on the
radio path.
The MAP_DETACH_IMSI service is a non-confirmed service using the service primitives defined in
table 6.1/5.
6.1.5.2 Service primitives
Parameter name Request Indication
Invoke Id M M(=)
IMSI C C(=)
TMSI C C(=)
Table 6.1/5: MAP_DETACH_IMSI