Hi Puneet Yes, refresher can be negotiated mid-call. In this case, since A has accepted the change in refresher (via the 200 OK response of ReInvite), B becomes the refresher till any further change.
Regards, Tarun Gupta Aricent -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kumar, Puneet (Puneet) Sent: Monday, August 06, 2012 9:15 PM To: [email protected] Subject: [Sip-implementors] Query of Session Expire & Refresh. Hi All, One query related to Session Expire header & Session refresher. UA-A UA-B ------------------INVITE-------------------> (Session-Expire:600;refresher=uac) <----------------200OK-------------------- (Session-Expire:600;refresher=uac) -------------------ACK--------------------> <after sometime> <---------------reINVITE---------------- (Session-Expire:600;refresher=uac) -----------------200OK------------------> (Session-Expire:600;refresher=uac) As seen above UA-A calls UA-B. For this call UAC i.e. UA-A will behave as a session refresher. After sometime UA-B sends a reINVITE with Session-Expire header having refresher=uac. So will it make UA-B as refresher? Does the refresher remain intact on the dialog basis or Transaction basis ? Thanks, Puneet _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors =============================================================================== Please refer to http://www.aricent.com/legal/email_disclaimer.html for important disclosures regarding this electronic communication. =============================================================================== _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
