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<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959">Hi Dana,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959">Have you tried to take packet captures from the back of the phone and see if the stream is reaching the phone from the remote-end?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959">If there is no MTP/Xcoder invoked, you will see the RTP stream coming directly from the CUBE (assuming that cube is in flow-through mode).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959">If the SIP traces look fine and IP and ports are exchanged correctly, it’s usually something in the network that’s not letting the RTP stream pass between the phone and the other end.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959">Thanks<br>
Sreekanth<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:#595959"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cisco-voip [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>Dana Tong<br>
<b>Sent:</b> Wednesday, April 30, 2014 1:45 PM<br>
<b>To:</b> cisco-voip@puck.nether.net (cisco-voip@puck.nether.net)<br>
<b>Subject:</b> [cisco-voip] One-way audio after BLIND transfer to SIP Trunk<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">Good evening all,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">A colleague and myself have discovered an issue where a Blind transfer has one-way audio.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">The scenario is as follows:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">IP Phone to IP phone call<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">Transfer to off-net mobile via SIP Trunk (via CUBE)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">Blind Transfer<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">When the remote person answers the phone, there is audio heard on the remote party, but nothing on the IP phone.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">The SIP trace SDP appears OK. The IP addresses seem to be c=IN IP is correct.
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">The web page for the phone reports Stream = Not Ready.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">Does anyone have any tips or thoughts on this issue? Have tried a number of config changes with respect to supplementary services on the CUBE, and MTP etc on the CUCM Trunk.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><br>
Cheers<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU">Dana<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-AU"><o:p> </o:p></span></p>
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