(last updated 2009-10-13) MIME media type name: Application MIME subtype name: 3gpp-ims+xml Required parameters: None Optional parameters: "charset" the parameter has identical semantics to the charset parameter of the "application/xml" media type as specified in RFC 3023. "sv" or "schemaversion" the parameter's value is used to indicate: - the versions of the 3GPP IP multimedia (IM) Core Network (CN) Subsystem XML schema that can be used to validate the 3GPP IM CN subsystem XML body (if the MIME type and parameter are present in the Content-Type header) or - the accepted versions of the 3GPP IM CN Subsystem XML body (if the MIME type and parameter are present in the Accept header). If the "sv" and schemaversion" parameters are absent, it shall be assumed that version 1 of the XML Schema for the IM CN subsystem XML body is supported. Encoding considerations: Same as encoding considerations of application/xml as specified in RFC 3023 Security considerations: Same as general security considerations for application/xml as specified in section 10 of RFC 3023. In addition, this content type provides a format for exchanging information in SIP, so the security considerations from RFC 3261 apply. Interoperability considerations: Same as Interoperability considerations as specified in section 3.1 of RFC 3023. If both "sv" and "schemaversion" are specified, than the value of "schemaversion" MUST be ignored Published specification: 3GPP TS 24.229 version 8.4.1: "IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP), stage 3" Available via and . Applications which use this media: Applications that use the 3GPP IM CN Subsystem as defined by 3GPP. Additional information : 1. Magic number(s) : none 2. File extension(s) : none 3. Macintosh file type code : none 4. Object Identifiers: none Application submitted on behalf of the Organizational Partners of 3GPP. Person to contact for further information: 1. Name : John M Meredith, 3GPP Specifications Manager 2. Email: john.meredith&etsi.org Intended usage: COMMON Author/Change controller : 3GPP Specifications Manager via www.3gpp.org Technical contact: jbakker&rim.com (file created 2009-10-13)