Re: [Sip-implementors] REFER received before ACK, What to do!!

2018-09-06 Thread Dale R. Worley
karthik sasupalli writes: > I have a scenario, where the REFER to an INVITE is received before the ACK. > > There is a Desk Phone and a Call server. The call is initiated by the Call > server. > > Desk Phone <-- INVITE <-- Call Server > Desk Phone --> 180 Ringing --> Call Server > Desk Phone -->

Re: [Sip-implementors] REFER received before ACK, What should be done !!

2018-09-06 Thread Roman Shpount
Karthik, You desk phone seems to be broken. It should handle REFER or re-INVITE before ACK. There is no reason in any RFC why UA should generate an error message for the next INVITE or REFER request, if it is received before ACK from the previous transaction. The main purpose of ACK is to stop

[Sip-implementors] REFER received before ACK, What should be done !!

2018-09-06 Thread Karthik Sasupalli
Hi All, I have a scenario, where the REFER to an INVITE is received before the ACK. There is a Desk Phone and a Call server. The call is initiated by the Call server. Desk Phone <-- INVITE <-- Call Server Desk Phone --> 180 Ringing -->Call Server Desk Phone --> 200 OK/SDP --> Call Server Desk

Re: [Sip-implementors] REFER received before ACK, What to do!!

2018-09-06 Thread Paul Kyzivat
On 9/6/18 1:05 AM, karthik sasupalli wrote: Hi All, I have a scenario, where the REFER to an INVITE is received before the ACK. There is a Desk Phone and a Call server. The call is initiated by the Call server. Desk Phone <-- INVITE <-- Call Server Desk Phone --> 180 Ringing --> Call Server