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DIN ETS 300188-1:1994-01

Отменен
Integrated Services Digital Network (ISDN) - Three-party (3PTY) supplementary service - Digital Subscriber Signalling System No. 1 (DSS1) protocol - Part 1: Protocol specification; English version ETS 300188-1:1993
DIN ETS 300188-1:1994-01
Отменен