> > INVITE retries during call setup is an interesting choice > for keeping > > the pinhole open. It sounds like everyone will continue to be > > creative until the outbound draft is finalized and implemented. > > > > Is this really so odd? RFC 3581 (which is standards track) says: > > To keep the binding fresh, the client SHOULD retransmit > its INVITE every 20 seconds or so. These retransmissions will need > to take place even after receiving a provisional response.
Thanks for pointing out the rfc3581 text. I agree resending the INVITE works and is suggested by rfc3581. Hopefully the text only applies when not using same outbound device and pinhole for incoming calls. The main reason that I mentioned it was an interesting choice was because of the potential for unexpected behavior when received at a device unable to recognize (because a restart, etcetera) that this a retry. And even if there wasn't a restart, hopefully the 18x contents don't cause confusion if successful UPDATEs have occurred within the early dialog. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
