scope:

The present document specifies the stage 2 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 by extension to the air interface and to keep those supplementary service names at the Air Interface in TETRA Radio based network. Calling Line Identification Presentation (SS-CLIP) is a supplementary service which is offered to the connected user and which provides either the calling user's identity (ITSI for TETRA) in case of individual call or the calling user identity (GTSI is presented as part of the normal group call set-up) in case of group call.