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Standards [CURRENT]

ETS 300186
Integrated Services Digital Network (ISDN); three-party (3PTY) supplementary service; service description

Title (German)

Diensteintegrierendes digitales Fernmeldenetz (ISDN); Zusatzdienst Dreierverbindung (3PTY); Dienstbeschreibung

Edition 1993-07
Original language English
Price On Request
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Table of contents

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