Hi Benny and all, One question need your confirm regarding the optional id parameter of event package header Per the sec. 3.1.2. "Identification of Subscribed Events and Event Classes" in RFC 3265 pp7 The "Event" header MAY also contain an "id" parameter. This "id" parameter, if present, contains an opaque token which identifies the specific subscription within a dialog. Also, in pp8 of RFC3265 says.. A SUBSCRIBE request MAY include an "id" parameter in its "Event" header to allow differentiation between multiple subscriptions in the same dialog. I can find the "id parameter" definition in \pjsip-simple\Evsub_msg.h However it seems that PJSIP does not implement the feature mentioned aboce (multiple subscriptions in the same dialog. ) Am I right? Thanks for your answer in advance! _________________________________________________________________ ???? ? ?? Windows Live ?????? http://download.live.com/toolbar -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090624/003b1975/attachment.html>