ÖNORM EN 300392-12-1 V 1.2.1

The present document specifies the stage 3 description of the Supplementary Services CLIP, CLIR and COLP all part of Call Identification for the Terrestrial Trunked Radio (TETRA). The term "Line" is used in the present document to design either the line of a "LS" Line Station or by extension the TETRA Air Interface. NOTE 1: In order to use the same name for supplementary services as ECMA. Calling Line Identification Presentation (SS-CLIP) is a supplementary service which is offered to the called user and which provides the calling user identity. Connected Line Identification Presentation (SS-COLP) is a supplementary service which is offered to the calling user and which provides the connected user identity. Calling/connected Line Identification Restriction (SS-CLIR) is a supplementary service offered to a user to restrict presentation of that users identity to another user. Man-Machine Interface and charging principles are outside the scope of the present document. The supplementary service stage 3 description is preceded by the stage 1 and the stage 2 description of the service, according to the method described in ITU-T Recommendation I.130 [1]. The stage 1 description specifies the service from the users point of view. The stage 2 description identifies the functional capabilities of each SS and the information flows needed to support the supplementary service as specified in its stage 1 description. The present stage 3 description specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support each Supplementary Service. NOTE 2: According to ITU-T Recommendation I.130 [1], the stage 3 description of any telecommunication service addresses the network implementation aspects. Consequently it comprises two steps: the specifications of all protocols at the various reference points involved in any of the service procedures (notably the service operation) are (...abbreviated)