Hello, i want implement iOS background support for incoming calls. My SIP-Server use UDP for SIP transport and i am not able to receive on_incoming_call callback in background mode. Now i am not sure if it is really only possible with tcp? Since i see in r3299 something like iOS4 background feature : "recreate closed UDP sockets" and in my log file i can see: ioq_select Attempting to replace UDP socket 16 ioq_select UDP has been replaced successfully! best regards, Matthias Me? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110210/27d80446/attachment.html>