| Заглавие на английском языке | 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) |