Thus: Does role of UA as UAC/UAS change on each transaction or it remain intact for throughout the session?
Yes, UAC and UAS role for each transaction. Regards, Ravi Kumar ---------------------------------------------------------------------------- --------------------------------------------------------- This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it! -----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Kumar, Puneet (Puneet) Sent: Tuesday, August 07, 2012 8:41 AM To: Brett Tate; sip-implementors@lists.cs.columbia.edu Subject: Re: [Sip-implementors] Query of Session Expire & Refresh. 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:br...@broadsoft.com] Sent: Monday, August 06, 2012 9:40 PM To: Kumar, Puneet (Puneet); sip-implementors@lists.cs.columbia.edu 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 Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
