DIN EN 300055-1:1999-12

Действует

Integrated Services Digital Network (ISDN); Terminal Portability (TP) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300055-1 V 1.2.4 (1998-06) as German standard) — 1 стр.