Created attachment 785339 [details] PNG with account settings Description of problem: http://voocall.cz SIP provider works with Twinkle but not with Linphone (and neither with Ekiga). Version-Release number of selected component (if applicable): linphone-3.5.2-5.fc18.x86_64 How reproducible: Always. Steps to Reproduce: Make a call to echo service. Actual results: "No response." Expected results: Make a call. Additional info: I can provide my SIP account at http://voocall.cz if there is an interest. I haven't found any bug tracker upstream (I not post anything to the mailing list). http://voocall.cz people are responsive, if one proves a SIP protocol violation they may fix it on their side.
Created attachment 785340 [details] PNG with echo service contact
Created attachment 785341 [details] Wireshark pcap with voocall.cz failed call from Linphone
Created attachment 785342 [details] Wireshark pcap with voocall.cz successful call from Twinkle
(In reply to Jan Kratochvil from comment #0) > I haven't found any bug tracker upstream (I not post anything to the mailing > list). This is real problem with fixing linphone bugs.
It has been resolved by Eugen Dedu for Ekiga upstream: https://bugzilla.gnome.org/show_bug.cgi?id=705783 Using @sip.voocall.cz everywhere (instead of @voocall.cz) works.