Hi Adam,
On Tue, Nov 22, 2011 at 3:40 AM, Adam Frankel (afrankel) <afran...@cisco.com > wrote: > Hi All, > > I am seeing a scenario for an established call in which an outbound > reINVITE is being done, the far end is sending a TRYING and then a REFER > immediately. We are rejecting this REFER with a 400 Bad Request because > the INVITE transaction has not been completed. > > I am not clear whether REFER is allowed mid reINVITE or if the far end > should wait for the 200OK/ACK to complete before sending the REFER. > I took a look a RFC3515 but it does not appear to state either way > whether this is allowed. Can anyone comment? > > You are right to reject it. Caller can send REFER on it's early dialogs, calle can send REFER only on confirmed ones. This question appeared recently, search for "REFER w/Replaces received right after slow start INVITE" subject on sip-implementors list. Regrds, Brez > Thanks, > > -- > Adam > > _______________________________________________ > 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
