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.