We created a Twilio application that connects via the SIP domain, performs some actions, and then transfer a call using the SIP Refer Method.
The problem right now is the server (sbc) sends 200 ok (accepts call transfer) only they receive BYE request.
In our case SIP refer sends a BYE request but after doing some retries and beacuse of the call transfer takes noticiable time to tranfer call.
So, is it possible to make a BYE request on the first call transfer attempt in Twilio? using SIP refer, or is there another approach we can employ?