Public Switched Telephone Network (PSTN) - Calling Line Identification Presentation (CLIP) supplementary service - Service description; English version ETS 300648:1997
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
Telecommunications Management Network (TMN) - Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface - Part 1: Single line configurations
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 3: Data link message and parameter codings
