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<p class="MsoNormal">Hey guys,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a weird one. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1 CUCM cluster 7.1.2<o:p></o:p></p>
<p class="MsoNormal">3 Voice gateways - 3845's<o:p></o:p></p>
<p class="MsoNormal">1 SIP trunk per gateway<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>External Party 1 ISDN --> Voice Gateway 1 --> SIP Proxy --> CUCM --> Phone<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Call gets connected and two way audio.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">While still connected the Phone makes a consult transfer to an external number.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Phone --> CUCM --> Voice Gateway 2 --> ISDN External Party 2<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">While the phone is connected to the external party two way audio is still working.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Phone completes the transfer and external party 1 is connected to external party 2.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I seem to get either 1 way audio or no audio whatsoever.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I've made sure IP Routing is on the voice gateways, hard set the codec just in case it was causing problems, enabled voice rtp send-recv, have allow-connections sip to sip enabled.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The same scenario but with a Direct Transfer instead works perfectly everytime.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does anyone have any ideas?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Appreciate any help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#003478">Karen Cheng</span></i></b><span style="font-size:12.0pt;
font-family:"Times New Roman","serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#003478">Voice Network Engineer</span></i><span style="font-size:12.0pt;
font-family:"Times New Roman","serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> <o:p></o:p></span></p>
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