ETS 300187:1993-08

Integrated Services Digital Network (ISDN); three-party (3PTY) supplementary service; functional capabilities and information flows

German title: Diensteintegrierendes digitales Fernmeldenetz (ISDN); Zusatzdienst Dreierverbindung (3PTY); Funktionsfähigkeiten und Informationsflüsse
Publication date: 1993-08
Original language: English
Pages: 29

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Replacement amendments

This document has been modified by: ETS 300187 Corrigendum 1:1994-04

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