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 (3G TS 22.066 version 3.0.1 Release 1999)
standard published 01/01/2000 by European Telecommunications Standards Institute
