22.1413GPPPresence serviceStage 1TS
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
 3GPP TR 21.905: "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Vocabulary for 3GPP Specifications".
 RFC 2778: "A Model for Presence and Instant Messaging"; http://www.ietf.org/rfc.html.
 RFC 2779 "Instant Messaging / Presence Protocol Requirement"; http://www.ietf.org/rfc.html.
 RFC 3863 " Presence Information Data Format (PIDF)"; http://www.ietf.org/rfc.html.
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