Hello folks I have an IMS case where a terminating point for emergency calls (PSAP) is performing callback to the user that placed the original emergency call.
It appears that the top most Route header in CallBack INVITE needs to have a Callback timer indication. Does anyone happen to have an example of how the Route header should look like? (the flow below is just a quick indication, several packets are missing) UE1 IMS SBC <==> PSAP | --------> | | | INVITE 911 | | | | | | | --------> | | | INVITE 911 | | | | | | <-------- | | | 200OK | | | | | <-------- | | | 200OK | | | | | | --------> | | | BYE | | | | --------> | | | BYE | | | <-------- | | | 200OK | | <-------- | | | 200OK | | | | | ====================================== Callback ====================================== | | | | | <-------- | | | INVITE | | | (CallBack) | | | | | <-------- | | | INVITE | | | (CallBack) | | | | | | --------> | | | 200OK | | | | | | | --------> | | | 200OK | | | | | --------> | | | BYE | | | | | | | --------> | | | BYE | | | | | | <-------- | | | 200OK | | | | | <-------- | | | 200OK | | thanks in advance Manolis _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
