Hi Anurag Lets take forking scenario A calls B and proxy forked the call to B1 ,B2 . A has established 2 early dialogs D1 ,D2 with B1 ,B2 respectively Now B1 is busy so sent 486 response but B2 still ringing.
*> Query > > 1) Can UAS use BYE to Terminate the dialog instead of error response?* Server acting as UAS can send 199 response on getting 486 from B1 to inform UAC that no need to terminate D1 and UAC can stop media session also for D1 . But please note UAS here will be proxy only and not endpoint UE. *> > 2) Can UAC use BYE to TERMINATE instead of CANCEL ?* In case 199 came from proxy for D1 then UAC dont need to send CANCEL or BYE. If user pressed endcall manually then anyway UAC should send CANCEL(no to-tag) to end all legs possible If UAC wants to terminate D1 without user intervention then UAC should send BYE(to-tag of D1) in early dialog . *> > 3) In this scenario do I need to support both CANCEL and BYE coming > from UAC when my device is acting as a UAS ?* Mostly CANCEL will come in early dialog and BYE in confirmed to UAS So in case UAS send BYE to terminate early D1 ,proxy can absorb it and send CANCEL to B1 . Otherwise if BYE is being sent to B1 then UAS will still have INVITE transaction pending till times out. So ideally CANCEL should come to UAS from proxy so that 487 can be sent and apart from dialog ,invite transaction too can be cleaned. Thanks & regards Ankur Bansal On Fri, May 30, 2014 at 12:16 PM, Vivek Talwar <[email protected] > wrote: > Hi Anurag, > > Kindly refer RFC for response 199 which is used to terminate early > dialog. This is extention and client need to first indicate that it > supports 199 response. > > Thanks and Regards, > Vivek Talwar > > > On Fri, May 30, 2014 at 12:13 PM, Anurag Chaudhry < > [email protected]> wrote: > > > Hi All, > > > > I want to know from both UAC and UAS prospective how to terminate the > > early dialog. > > > > The Scenario is : > > > > UAC Send INVITE with 100 Rel required header and UAS respond back with > > 183( reliable provisional response) to establish early dialog > > > > Query > > > > 1) Can UAS use BYE to Terminate the dialog instead of error > response? > > > > 2) Can UAC use BYE to TERMINATE instead of CANCEL ? > > > > 3) In this scenario do I need to support both CANCEL and BYE coming > > from UAC when my device is acting as a UAS ? > > > > Thanks in Advance > > Anurag > > "DISCLAIMER: This message is proprietary to Aricent and is intended > solely > > for the use of the individual to whom it is addressed. It may contain > > privileged or confidential information and should not be circulated or > used > > for any purpose other than for what it is intended. If you have received > > this message in error, please notify the originator immediately. If you > are > > not the intended recipient, you are notified that you are strictly > > prohibited from using, copying, altering, or disclosing the contents of > > this message. Aricent accepts no responsibility for loss or damage > arising > > from the use of the information transmitted by this email including > damage > > from virus." > > _______________________________________________ > > Sip-implementors mailing list > > [email protected] > > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > > > > -- > > Name | Title > GlobalLogic > P +x.xxx.xxx.xxxx M +x.xxx.xxx.xxxx S skype > www.globallogic.com > <http://www.globallogic.com/> > http://www.globallogic.com/email_disclaimer.txt > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
