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DIN EN 300267-1:1999-08

Отменен
Integrated Services Digital Network (ISDN) - Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS 1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300267-1 V 1.2.2 (1998-04) as German standard)
DIN EN 300267-1:1999-08
Отменен
DIN EN 300267-1:2001-02
Действует