(last updated 14 September 2006) Name : Sean Kelley Email : seankelley&motorola.com MIME media type name : Application MIME subtype name : Vendor Tree - vnd.poc.group-advertisement+xml Required parameters : none Optional parameters : none Encoding considerations : 8bit The UTF-8 charset is used in the content of this XML-based media type. Security considerations : This content type carries one or more service URIs used to initiate Group calls, and normally does not contain information that needs to be kept private. Usage of the service URIs is controlled by authorization policies associated with the Group, and which are enforced by the Application Server that has control over the service URI. The vnd.poc.group-advertisement+xml typed content itself does not provide either privacy or integrity protection. If needed, external mechanisms such as those suggested by [RFC3428] for SIP MESSAGE bodies may be applied. This media type does not contain executable content. Interoperability considerations : This content type provides a format for exchanging information about the existence of a Group. Published specification : The OMA PoC Control Plane Specification is published at http://www.openmobilealliance.org/. Applications which use this media : Applications that support group communication, such as OMA Push to Talk over Cellular (PoC) service. Additional information : 1. Magic number(s) : none 2. File extension(s) : none 3. Macintosh file type code : none 4. Object Identifiers: none Person to contact for further information : 1. Name : OMA Push to Talk over Cellular (POC) Working Group 2. Email : technical-comments&mail.openmobilealliance.org Intended usage : Common Author/Change controller : The OMA PoC specifications are a work item of the OMA Push to Talk over Cellular (POC) Working Group. The Open Mobile Alliance has change control over these specifications, with mailing list address technical-comments&mail.openmobilealliance.org. (file created 14 September 2006)