Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); terminal equipment interface; English version ETS 300290:1994
Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); terminal equipment interface; English version ETS 300290:1994
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 4: Protocol Implementation Conformance Statement (PICS) proforma specification for the general protocol