ETSI TS 122 081

ETSI TS 122 081
ETSI TS 122 081 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Line identification Suplementary Services; Stage 1 (3G TS 22.081 version 3.1.0 Release 1999)

standard published 01/01/2000 by European Telecommunications Standards Institute

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