Integrated Services Digital Network (ISDN) - Call Hold (HOLD) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification; english version ETS 300141-1:1992
German title
ISDN - Dienstmerkmal Halten - Digitales Zeichengabeverfahren Nr. 1 für Anschlußleitungen (DSS1) - Teil 1: Protokollspezifikation; Englische Fassung von ETS 300141-1:1992
Publication date
1992-11
Original language
English
Pages
23
Publication date
1992-11
Original language
English
Pages
23
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