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Standards [CURRENT]

DIN ETS 300548

European digital cellular telecommunications system (Phase 2) - Call Barring (CB) supplementary services - Stage 2; English version ETS 300548:1995
Edition 1995-09

Standards [CURRENT]

DIN ETS 300544

European digital cellular telecommunications system (Phase 2) - Call Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 2; English version ETS 300544:1995
Edition 1995-09

Standards [CURRENT]

DIN ETS 300546

European digital cellular telecommunications system (Phase 2) - Closed User Group (CUG) supplementary services - Stage 2; English version ETS 300546:1996
Edition 1996-08

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