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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ah no. Capabilities mismatch requires either MTP/Transcoder.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You should be able to see in Wireshark your SDP being sent and what codecs to confirm. AVP 0 is G711 and AVP 18 is G729. <a href="http://en.wikipedia.org/wiki/RTP_Audio_Video_Profiles">http://en.wikipedia.org/wiki/RTP_Audio_Video_Profiles</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> cisco-voip [mailto:cisco-voip-bounces@puck.nether.net] <b>On Behalf Of </b>Erick Wellnitz<br><b>Sent:</b> Thursday, August 01, 2013 10:35 AM<br><b>To:</b> cisco-voip<br><b>Subject:</b> [cisco-voip] fast busy when phone CFA via CUBE<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><div><p class=MsoNormal>I have an issue which is probably very easy to fix but I think I'm making it more complex than I need to.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>I have a Nortel that we are migrating to CUCM 9.1 from. In the interim, we have interated the two using SIP via CUBE. PSTN gateway is H323. I wouldn't normally do this but decisions get made and we have to deal with it.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Call from Nortel to IP Phone works fine. Call forward that same IP Phone to a PSTN number and the call connects to the external number as if nothing was wrong but the Nortel phone gets dropped with a 'fast busy'.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Traces and TAC (626731957) that my colleague opened seem to show a codec /capabilities mismatch but I can't find a codec mismatch in the system at all and our reporting/monitoring tool shows the call trying to connect as G711u on both sides.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Is this a situation where an MTP is gong to be necessary or is there a way to avoid mandatory MTP?<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Thanks in advance! <o:p></o:p></p></div></div><p class=MsoNormal><br><br><span style='color:white'>itevomcid</span> <o:p></o:p></p></div></body></html>