Thanks Brett, My doubt was related to who is UAC & UAS.
Say UA-A calls UA-B, then UA-A is UAC & UA-B as UAS. Then UA-B sends a reINVITE to UA-A, will it make UA-B as UAC now? Thus: Does role of UA as UAC/UAS change on each transaction or it remain intact for throughout the session? Thanks, Puneet -----Original Message----- From: Brett Tate [mailto:[email protected]] Sent: Monday, August 06, 2012 9:40 PM To: Kumar, Puneet (Puneet); [email protected] Subject: RE: Query of Session Expire & Refresh. > 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? Yes; however it ultimately depends upon the value within the re-INVITE's 2xx response. See RFC 4028 section 9. > Does the refresher remain intact on the dialog > basis or Transaction basis ? The refresher can be renegotiated. See RFC 4028 section 7.4. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
