ETSI EN 301 716
ETSI EN 301 716
Digital cellular telecommunications system (Phase 2 ) (GSM); Support of Mobile Number Portability (MNP); Technical Realisation; Stage 2 (GSM 03.66 version 7.3.1 Release 1998) Edition: 7.3.1European Telecommunications Standards Institute / 01-Oct-2000 / 71 pages