Integrated Services Digital Network (ISDN). Connected line identification restriction (colr) supplementary service. Service description
Edition 1994-09-01

Integrated Services Digital Network (ISDN). Telephony 7 kHz teleservice. Service description
Edition 1995-11-01

Digital cellular telecommunications system (Phase 2) - Attachment requirements for Global System for Mobile communications (GSM) - Mobile stations in the DCS 1 800 band and additional GSM 900 band - Telephony (GSM 13.02 version 4.0.1)
Edition 2000-03-01

Digital cellular telecommunications system (Phase 2+) - GSM Cordless Telephony System (CTS), Phase 1 - Lower Layers of the CTS Radio Interface - Stage 2 (GSM 03.52 version 8.0.1 Release 1999)
Edition 2000-12-01

Integrated Services Digital Network (ISDN) - Calling Line Identification Restriction (CLIR) supplementary service - Service description
Edition 2001-02-01

Access and Terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 1: On-hook data transmission
Edition 2001-04-01

Access and Terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 2: Off-hook data transmission
Edition 2001-04-01

Digital Enhanced Cordless Telecommunications (DECT) - Radio in the Local Loop (RLL) Access Profile (RAP) - Part 2: Advanced telephony services
Edition 2001-05-01

Digital Enhanced Cordless Telecommunications (DECT) - Radio in the Local Loop (RLL) Access Profile (RAP) - Part 1: Basic telephony services
Edition 2001-07-01