Hi All, I would like to emphasize the need for adapting unsolicited NOTIFY as a standard. We all are aware of so many commercial applications using this mechanism. Also, for typical features of presence and call-processing, user-agents make subscriptions for sip-profile, reg event, presence/RLS, watcher-info, message waiting indication, xcap-diff events etc.
There are overheads on both the network and UA for maintaining the dialog states for all these subscriptions, excessive SIP messaging and not to mention the high-availability complexities where a network node has to mirror the dialog information on its peer. There are many optimizations like multi dialog usage (RFC 5057) etc but these lead to inter-operation issues as their implementation varies vendor to vendor. I would like to ask whether there is an effort to address these issues. ~Vikram _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
