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<p>I am having an issue with a couple of phones where they ring, but
there is a long delay after the phone is picked up before the
audio starts. <br>
</p>
<p>My setup: <br>
</p>
<ul>
<li>Server running Asterisk 13.9.1, Dahdi 2.11.1 w/ OSLEC</li>
<li>Server is CentOS 7<br>
</li>
<li>Quad core CPU with 16GB Ram</li>
<li>2 Snom 300 phones.</li>
<li>NO NAT. Server and phone are on the same subnet with only a
gigabit switch between them.</li>
<li>Digium TDM400 analog card with 2 incoming analog PSTN lines<br>
</li>
</ul>
<p>When a call comes in, the system answers, IVR plays, caller dials
an extension, Snom 300 rings, handset picked up. Caller continues
to hear ringing for another 7 to 10 seconds. Answerer hears a
click, a quick burst of audio, then silence, then another click
and audio is engaged.</p>
<p>I have tried both SIP and RTP debugging and there are absolutely
no messages indicating any timeout or retransmit. I am at a total
loss. In the past I've always been able to find an answer to
issues like this on my own, but this time I just don't know. I
was even beginning to suspect the network switch might be bad, but
pinging between the server and the phones shows no packet loss and
0.969ms average response time.<br>
</p>
<p>What am I missing<b>?</b></p>
Thanks,<br>
Brent Davidson<b><br>
</b>
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