Content for TS 24.087 Word version: 18.0.0
1 Scope p. 5
This Technical Specification gives the stage 3 description of the User-to-User signalling supplementary services.
The User-to-user supplementary service is divided into 3 different services:
- Service 1 (UUS1)
- Service 2 (UUS2)
- Service 3 (UUS3)
2 References p. 5
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.087: "Digital cellular telecommunications system (Phase 2+); User-to-User Signalling (UUS); Stage 2".
[3]
TS 24.008: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 specification ".
[4]
TS 24.080: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 supplementary services specification; Formats and coding".
3 Definitions and abbreviations p. 5
3.1 Definitions p. 5
For the purposes of the present document, the following definitions apply:
Remote party:
For service 1 and 2 the remote party is the called party of a call to which the served subscriber activates the UUS supplementary service. For service 3 the remote party can be either the called or the calling party of an established call to whom the use of the UUS supplementary service is requested by the served subscriber.
Served subscriber:
The subscriber who has a provision of the UUS supplementary service and who activates the UUS supplementary service. For service 1 and 2 the served subscriber is always the calling subscriber, for service 3 either the calling or the called subscriber can be the served subscriber.
User-to-User Information (UUI):
The information transferred by using the UUS supplementary service.
UUS not required:
If the "UUS not required" indication is given by the subscriber, the call will be completed even if UUI cannot be passed to the called subscriber.
UUS required:
If the "UUS required" indication is given by the subscriber, the call shall not be completed if UUI cannot be passed to the called subscriber.
UUS Service:
The UUS services (Service 1, 2 and 3) are components of the UUS supplementary service. If the UUS supplementary service is provided to a subscriber, he can handle the UUS services independently within a call.
3.2 Abbreviations p. 6
For the purposes of the present document, the following abbreviations apply:
MS A
Mobile Station A, the mobile station of the served subscriber
MS B
Mobile Station B, the mobile station of the remote subscriber
UUI
User-to-User Information
UUS
User-to-User Signalling
UUS1
User-to-User Signalling Service 1
UUS2
User-to-User Signalling Service 2
UUS3
User-to-User Signalling Service 3
Further GSM related abbreviations are listed in TR 21.905.
