GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

Page 82
GSM 09.02 version 5.3.0: August 1996
6.2.2 MAP_SEARCH_FOR_MS service
6.2.2.1 Definition
This service is used between VLR and MSC to initiate paging of an MS in all location areas of that VLR. It
is used if the VLR does not hold location area information confirmed by radio contact.
The MAP_SEARCH_FOR_MS service is a confirmed service using the primitives from table 6.2/2.
6.2.2.2 Service primitives
Parameter name Request Indication Response Confirm
Invoke Id M M(=) M(=) M(=)
IMSI M M(=)
Current location area Id C C(=)
User error C C(=)
Provider error O
6.2.2.3 Parameter definitions and use
Invoke Id
See definition in subclause 5.6.1.
IMSI
Table 6.2/2: MAP_SEARCH_FOR_MS
See definition in subclause 5.6.2. The IMSI is used to identify the subscriber when paging on the radio
path.
Current location area Id
See definition in subclause 5.6.2. In case of successful outcome of the service, i.e. if the MS responds to
paging, the Location Area Id of the area in which the MS responded is given in the response.
User error
The following error causes defined in subclause 5.6.1 shall be sent by the user if the search procedure
fails, depending on the failure reason:
- absent subscriber;
This error cause is returned by the MSC if the MS does not respond to the paging request.
- system failure;
This corresponds to the case where there is no call associated with the MAP_SEARCH_FOR_MS
service, i.e. if the call has been released but the dialogue to the VLR has not been aborted.
- busy subscriber;
- unexpected data value.
Provider error
See definition in subclause 5.6.1.