Hi all, I'm experiencing a small problem using the 100rel module. I have to devices registered to my network. When I call pjsua_call_make_call i set the option to options |= PJSIP_INV_REQUIRE_100REL; On the called device, I have in the log : 16:20:48.000 dlg00073A44 Module mod-100rel added as dialog usage, data=00055C78 16:20:48.000 dlg00073A44 100rel module attached the called UA send then back a 100 trying but with no content. The calling UA send the PRACK message, and the called device answer with an empty 200 OK. The calling UA never get an answer to his PRACK, so when he receive the 408 timeout from the network, it hangs up the call. Using the pjsua-lib, is there something more to be implemented to have the 100rel workgin ? Thx a lot Regards, Olivier -- Olivier Beytrison Telecommunication Engineer Mobile: +41 (0)78 619 73 53 Mail: olivier at heliosnet.org GPG: 0x4FB83528 http://pgp.mit.edu/