SSH ETS 300 191:1992 ed.1

Private Telecommunication Network (PTN); Signalling protocol at the S-reference point Identification supplementary services

Scope

This standard specifies the signalling protocol for the support of identification supplementary services at an interface at the S reference point between a Terminal Equipment (TE) and a Private Telecommunication Network (PTN). The Protocol specified in this standard is an extension of the layer 3 protocol for the support of circuit mode basic services, as specified in ETS 300 192. The identification supplementary services concerned are Supplementary Service Calling Line Identification Presentation (SS-CLIP), Supplementary Service Connected Line Identification Presentation (SS-COLP) and Supplementary Service Calling / Connected Line Identification Restriction (SS-CLIR).