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Public Switched Telephone Network (PSTN); Method of rating terminal equipment so that it can be connected in series and/or in parallel to a Network Termination Point (NTP)
Standard published on 31.1.1998
Selected format:A guide to the application of TBR 21
Standard published on 31.1.1998
Selected format:A guide to the application of TBR 21
Standard published on 31.7.1998
Selected format:A guide to the application of TBR 21
Standard published on 23.2.2000
Selected format:Human Factors (HF); Universal Personal Telecommunications (UPT); Specification of the minimum Man-Machine Interface (MMI) for Phase 1 UPT
Standard published on 28.2.1998
Selected format:Equipment Engineering (EE); Interworking between Direct Current/Isolated (DC/I) and Direct Current/Common (DC/C) electrical power systems
Standard published on 28.2.1998
Selected format:Universal Personal Telecommunication (UPT); UPT phase 2; Subscriptions, service profiles and information model
Standard published on 30.11.1997
Selected format:Telecommunications security; Lawful Interception (LI); Requirements for network functions
Standard published on 31.5.1998
Selected format:Telecommunications security; Lawful Interception (LI); Requirements for network functions
Standard published on 30.4.2002
Selected format:Corporate Telecommunication Networks (CN); Transmission characteristics of digital Private Branch eXchanges (PBXs)
Standard published on 31.5.1998
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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