| Заглавие на английском языке | Integrated Services Digital Network (ISDN) - Telephony 7 kHz and videotelephony teleservices; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version ETS 300267-6:1998 as German standard) |