02.663GPPService descriptionStage 1Support of Mobile Number Portability (MNP)TS
This Technical Specification (TS) has been produced by the Special Mobile Group (SMG).
The present document defines the stage one description of the Support of Mobile Number Portability between GSM networks in the same country.
The contents of the present document is subject to continuing work within SMG and may change following formal SMG approval. Should SMG modify the contents of the present document, it will be republished by ETSI with an identifying change of release date and an increase in version number as follows:
7 indicates GSM Phase 2+ Release 1998;
y the third digit is incremented when editorial only changes have been incorporated in the specification;
x the second digit is incremented for all other types of changes, i.e. technical enhancements, corrections, updates, etc.