Maybe PRACK, RFC 3262, is what you are looking for?

---
Stefan

On Jun 21, 2017 2:46 PM, "Abdoul Osséni" <abdoul.osseni@gmail.com> wrote:

Hello,

During three-way handshake (SIP call setup - INVITE-200 OK - ACK) and before generating or sending the final 200 OK call, is there a way to confirm the caller is still available (no network issue)?

I want to detect broken connections (ex. the uac uses 3G network) before generating/sending/forwarding the final 200 OK.

Thanks.

Regards

Abdoul 

_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users@lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users@lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users