Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; functional capabilities and information flows; english version ETS 300140:1992
Edition 1992-12

Integrated Services Digital Network (ISDN); Calling Line Identification Presentation (CLIP) and Calling Line Identification Restriction (CLIR) supplementary services; functional capabilities and information flows; english version ETS 300091:1992
Edition 1992-12

Integrated Services Digital Network (ISDN); conference call, add-on (CONF) supplementary service; functional capabilities and information flows; English version ETS 300184:1993 + Corrigendum September 1993
Edition 1994-04

Integrated Services Digital Network (ISDN); Meet-Me Conference (MMC) supplementary service; functional capabilities and information flows; English version ETS 300165:1993
Edition 1994-01

Integrated Services Digital Network (ISDN); Subaddressing (SUB) supplementary service; functional capabilities and information flows; english version ETS 300060:1991
Edition 1992-09

Complete, filled transport packages; distribution trials; information to be recorded (ISO 4178:1980); german version EN 24178:1992
Edition 1993-02

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 3: Frame relay protocol specification; English version ETS 300402-3:1996
Edition 1997-04

Digital cellular telecommunications system (Phase 2) - Base Station System (BSS) management information; English version ETS 300622:1996
Edition 1997-07

Digital Enhanced Cordless Telecommunications (DECT) - Global System for Mobile communications (GSM); Integrated Services Digital Network (ISDN); DECT access to GSM via ISDN - Functional capabilities and information flows; English version ETS 300788:1997
Edition 1998-07

Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary service; functional capabilities and information flows; English version ETS 300181:1993
Edition 1994-01