Hi, I tried pjsip 2.1 and even latest 2.2 trunk but I still see from time to time that on_incoming_call did not get called when my iOS app runs in background (surely I have set it as a voip app), especially using 3G. So in this case only when the app enters the foreground on_incoming_call was called but the calling party had already hang up. After further debugging the issue I found sometimes the tcp port seems to be blocked entirely as my server keeping resending the invite message. So any idea how to fix that ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20140107/4be6ba91/attachment-0001.html>
