GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

Page 130
GSM 09.02 version 5.3.0: August 1996
9.5 MAP_INTERROGATE_SS service
9.5.1 Definitions
This service is used between the MSC and the VLR and between the VLR and the HLR to retrieve
information related to a supplementary service. The VLR will relay the message to the HLR if necessary.
The service is a confirmed service and consists of four service primitives.
9.5.2 Service primitives
The service primitives are shown in table 9.5/1.
Parameter name Request Indication Response Confirm
Invoke id M M(=) M(=) M(=)
SS-Code M M(=)
Basic service C C(=)
SS-Status C C(=)
Basic service Group LIST C C(=)
Forwarding feature LIST C C(=)
CLI restriction Info C C(=)
User error C C(=)
Provider error O
9.5.3 Parameter use
Table 9.5/1: MAP_INTERROGATE_SS parameters
For additional information on parameter use refer to the GSM 04.8x and 04.9x-series of technical
specifications.
Invoke id
See subclause 5.6.1 for the use of this parameter.
SS-Code
The mobile subscriber can only interrogate a single supplementary service per service request.
Basic service
This parameter indicates for which basic service group the given supplementary service is interrogated. If it
is not included, the interrogation request applies to all basic services.
SS-Status
This parameter is included by the responder if:
- the interrogated supplementary service can only be subscribed for all applicable basic services
simultaneously; or
- the interrogated supplementary service is not active for any of the interrogated basic services.