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

From: McKenzie, Gavin
Subject: Re: [Linphone-developers] iPhone background behaviour / SIP over TCP and RTP over UDP?
Date: Thu, 10 Nov 2011 12:05:57 -0500

Hmmm...that's encouraging.

My experience in testing linphone iPhone against a SIP server configured for 
SIP-TCP and RTP-UDP is that everything works fine in the linphone iPhone app 
when the transport_preference is UDP -- except that the app doesn't receive 
calls when backgrounded. Hence I had assumed that selecting UDP was causing the 
SIP socket to switch to UDP also.


On 2011-11-10, at 11:36 AM, Martin Hörlin wrote:

> Hi,
> The behaviour on the Android version is that the UDP/TCP/TLS option only 
> affects the SIP traffic and that the RTP always uses UDP for transport. 
> I would assume it is the same for the Iphone version.
> Martin

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