SSH ETS 300 137:1992

Rrjeti Dixhital i Shërbimeve të Integruara (ISDN); Shërbimi shtesë i Grupit të Mbyllur të Përdoruesve (CUG) Aftësitë funksionale dhe rrjedhat e informacionit

Integrated Services Digital Network; Closed User Group (CUG) supplementary service Functional capabilities and information flows

Scope

This standard defines stage two of the Closed User Group (CUG) supplementary service for the panEuropean Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators. Stage two identifies the functional capabilities and the information flows needed to support the service description. The stage two description also identifies user operations not directly associated with a call (see CCITT Recommendation I.130 [1]).