ETSI TS 122 066
ETSI TS 122 066
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Support of Mobile Number Portability (MNP); Service description; Stage 1 (3GPP TS 22.066 version 4.0.0 Release 4)
standard published 03/01/2001 by European Telecommunications Standards Institute
