Digital cellular telecommunications system (Phase 2+) (GSM); Line identification supplementary services; Stage 2 (GSM 03.81 version 5.2.0 Release 1996)
Document status: Active
Digital cellular telecommunications system; Call Forwarding (CF) supplementary services; Stage 2 (GSM 03.82)
Document status: Active
Digital cellular telecommunications system; Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 2 (GSM 03.83)
Document status: Active
Digital cellular telecommunications system; Multi Party (MPTY) supplementary services; Stage 2 (GSM 03.84)
Document status: Active
Digital cellular telecommunications system; Closed User Group (CUG) supplementary services; Stage 2 (GSM 03.85)
Document status: Active
Digital cellular telecommunications system; Call Barring (CB) supplementary services; Stage 2 (GSM 03.88)
Document status: Active
Digital cellular telecommunications system; Unstructured Supplementary Service Data (USSD); Stage 2 (GSM 03.90)
Document status: Active
Digital cellular telecommunications system (Phase 2+) (GSM); Explicit Call Transfer (ECT) supplementary service; Stage 2 (GSM 03.91)
Document status: Active
Digital cellular telecommunications system (Phase 2+) (GSM); Explicit Call Transfer (ECT) supplementary service; Stage 2 (GSM 03.91)
Document status: Active
Digital cellular telecommunications system (Phase 2+) (GSM); Explicit Call Transfer (ECT) supplementary service; Stage 2 (GSM 03.91)
Document status: Active
