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Motivation SIP PUBLISH allows a particular PUA to publish its view of the presentity, separate from other views published by other PUAs It is not possible for other PUAs to fetch this information The data published using SIP PUBLISH is always associated with an expiration time Infinite expiration time has issues with state cleanup etc. There is a need to be able to publish PUA/device independent data about the presentity Parts of this data change very infrequently It must be possible to fetch and update this data from any device Examples of this kind of data Presentity’s homepage Presentity’s e-mail address Note ”I’m on holiday without any connectivity for the next 3 weeks” |