Integrated Services Digital Network (ISDN); primary rate user-network interface; layer 1 specification and test principles; english version ETS 300011:1992
Integrated Services Digital Network (ISDN) - Basic User Network Interface (UNI) - Part 6: Abstract Test Suite (ATS) specification for interface IA (incl. Diskette!!!)
Integrated Services Digital Network (ISDN); ISDN Packet Mode Bearer Services (PMBS); ISDN Virtual Call (VC) and Permanent Virtual Call (PVC) bearer services provided by the D-channel of the user access; basic and primary rate; english version ETS 300049:1992
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 1: General aspects [ITU-T Q.920 (1993), modified]; English version ETS 300402-1:1995
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Teleaction service - Part 1: Protocol specification
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Teleaction service - Part 7: Test Suite Structure and Test Purposes (TSS&TP) specification for the Teleaction Management Function (TMF)
