NA 022
DKE Deutsche Kommission Elektrotechnik Elektronik Informationstechnik in DIN und VDE
Technische Regel
[AKTUELL]
ITU-T Q.2957.1
ITU-T Q.2957.1
Stage 3 description for additional information transfer supplementary services using B-ISDN digital subscriber signalling system No. 2 (DSS2) - Basic call : User-to-user signalling (UUS)
Titel (englisch)
Stage 3 description for additional information transfer supplementary services using B-ISDN digital subscriber signalling system No. 2 (DSS2) - Basic call : User-to-user signalling (UUS)