02.663GPPService descriptionStage 1Support of Mobile Number Portability (MNP)TS
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
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- For a non-specific reference, the latest version applies.
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- For this Release 1998 document, references to GSM documents are for Release 1998 versions (version 7.x.y).
 GSM 01.04 (ETR 350): "Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms".