作者: Linyi Tian
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摘要: A method for notifying presence information, a server, client and system. The watcher subscribes the information of presentity via server; server receives distribution sent by persentity or application sever judges whether has set notification rule, if rule been set, processes according to process related content preset said rule; not judging, persentity; sends processed watcher. can be in XDMS watcher, produced when subscribing. By system, determine user is notified which requirement user.