ETSI GSM 07.03-1994 European Digital Cellular Telecommunications System (Phase 2); Terminal Adaptation Functions (TAF) for Services Using Synchronous Bearer Capabilities (ETS 300 584 Version 4.5.1)
1996ETSI GSM 07.03-1996 Digital Cellular Telecommunications System (Phase 2+); Terminal Adaptation Functions (TAF) for Services Using Synchronous Bearer Capabilities
1994ETSI GSM 07.03-1994 European Digital Cellular Telecommunications System (Phase 2); Terminal Adaptation Functions (TAF) for Services Using Synchronous Bearer Capabilities (ETS 300 584 Version 4.5.1)