SSH ETS 300 136:1992

Rrjeti Dixhital i Shërbimeve të Integruara (ISDN); Shërbimi shtesë i Grupit të Mbyllur të Përdoruesve (CUG) përshkrimi i Shërbimit

Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service Service description

Scope

This standard defines the stage one of the Closed User Group (CUG) supplementary service for the panEuropean Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators. Stage one is an overall service description from the user's point of view (see CCITT Recommendation I.130 [1]), but does not deal with the details of the human interface itself. This standard defines the interworking requirements of private ISDNs with the public ISDN.