<div dir="ltr"><pre>Hi George,<br><br></pre><pre>I tried the nightly build and also Bria. I can replicate the same issue on both.<br><br></pre><pre>This morning I made many successful calls in succession. This evening it was intermittent again.<br><br></pre><pre>Could it be the mobile network is blocking the RTP but it seems odd it works sometimes and not others.<br><br></pre><pre>That said I have another setup with Kamailio which talks to the same asterisk via pjsip. I get audio on this account every single time when using mobile networks. It's very strange. It seems like PJSIP simply doesn't set up the RTP when I connect to the asterisk directly.<br></pre><pre>Any other suggestions?<br><br><br>On Tue, Jan 19, 2016 at 5:05 PM, <b>George Joseph</b> <george.joseph at <a href="http://fairview5.com">fairview5.com</a>> wrote:<br><br>> With the exception of media_encryption_optimistic=yes and ice_support =
> no, my setup looks like yours and I'm not having any problems with
> CSipSimple, even with SRTP mode = mandatory. I assume your server has a
> public IP address and there's no NAT involved on the server side? Oddly
> enough, I have ICE and Aggressive ICE turned on in CSipSimple.
>
> CSipSimple in the Play store is a little stale. Have you tried the
> "nightly" version?</pre></div>