ETSI TS 144 057
ETSI TS 144 057
Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony System (CTS), Phase 1; CTS supervising system Layer 3 Specification (3GPP TS 44.057 version 4.0.0 Release 4)
standard published 03/01/2001 by European Telecommunications Standards Institute
