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[Linphone-developers] iPhone background behaviour / SIP over TCP and RTP

From: McKenzie, Gavin
Subject: [Linphone-developers] iPhone background behaviour / SIP over TCP and RTP over UDP?
Date: Thu, 10 Nov 2011 10:23:40 -0500


I've read the docs and FAQ, and I know that the linphone-iPhone project has a 
configuration option for either UDP or TCP.

Is it possible for the underlying linphone libraries used by the iPhone app to 
operate so that the SIP call control happens over TCP and the RTP audio is over 
It appears that switching the configuration option in the app switches both the 
SIP and RTP to either UDP or TCP.

Because backgrounded apps on iOS require a TCP socket in order for iOS to 
awaken the app, I believe that I need SIP over TCP, however my environment 
requires the RTP stream to be over UDP.

Is this possible?


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