Patent ID: 7650337

Claim:
A system of modifying access to presence information, the system including a processor and memory storing: a plurality of stored containers, each stored container including a member list comprising members who have access to stored publications; a receive membership update component that receives a request message via a Session Initiation Protocol (SIP) for Instant Messaging and Presence Leveraging Extensions (SIMPLE) to update the member list of one of the plurality of stored containers, the request message comprising: a container section represented by extensible markup language (XML), the container section including: a container identifier represented by XML, the container identifier identifying the one of the plurality of stored containers; a container version number represented by XML, the container version number identifying a version number of the one of the plurality of stored containers; and a member group represented by XML, the member group for which access to the publications stored in the one of the plurality of stored containers is to be granted, the member group comprising an attribute specifying a type of user group, wherein the types is selected from a plurality of predefined members group types; a modify access component that in response to receiving the request modifies the member list of the one of the plurality of stored containers by adding the member group to the member list of the one of the plurality of stored containers.