ETSI EN 300 954:2000 Digital Cellular Telecommunications System (Phase 2+); Multi Party (MPTY) Supplementary Services; Stage 3 (GSM 04.84 Version 7.0.1 Release 1998)
ETSI - European Telecommunications Standards Institute
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ETSI EN 300 954:2000
ETSI EN 300 954:2000 history
2000ETSI EN 300 954:2000 Digital Cellular Telecommunications System (Phase 2+); Multi Party (MPTY) Supplementary Services; Stage 3 (GSM 04.84 Version 7.0.1 Release 1998)
1999ETSI EN 300 954:1999 Digital Cellular Telecommunications System (Phase 2+); Multi Party (MPTY) Supplementary Services; Stage 3 (GSM 04.84 Version 6.0.1 Release 1997)