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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:#1F497D'>The software MTP on UCM only supports 711, if you need to use 729 you’ll need to configure an external MTP/transcoder or CUBE.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:#1F497D'>Using a CUBE in the middle as a demarc is best practice, gives you all the features of SIP & SDP manipulation (e.g delayed to early, message normalization), transcoding, etc and also avoids a direct SIP trunk to your UCM.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><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-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b>On Behalf Of </b>Cristobal Priego<br><b>Sent:</b> Tuesday, July 26, 2011 1:28 AM<br><b>To:</b> David Martin<br><b>Cc:</b> cisco-voip@puck.nether.net<br><b>Subject:</b> Re: [cisco-voip] CUCM 6.1 and SIP Trunking<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>on version 6.X if you want to send a early offer on your sip trunk you need MTP and the codec supported is g.711 only. if you're trying to use g.729 is not going to work <o:p></o:p></p><div><p class=MsoNormal>2011/7/25 David Martin <<a href="mailto:adavidm@gmail.com">adavidm@gmail.com</a>><o:p></o:p></p><p class=MsoNormal>All,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I am trying to set up a SIP trunk between CUCM 6.1 and Freeswitch. I only need calls outbound from Cisco to Freeswitch at the moment but am having some difficulties.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The Cisco side never sends an SDP, either in the INVITE or the ACK, and Freeswitch needs this to operate. I have tried using "require media termination point" and "disable early media" options but there appears to be no difference, which is strange. I include a pastebin of the conversation:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";background:white'><a href="http://pastebin.com/T3eqms8N" target="_blank"><span style='color:#0658B5'>http://pastebin.com/T3eqms8N</span></a></span><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>and a couple of screenshots of the CUCM config for the trunk.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="http://img200.imageshack.us/img200/9405/siptrunk.png" target="_blank">http://img200.imageshack.us/img200/9405/siptrunk.png</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="http://img191.imageshack.us/img191/3863/sipprofile.png" target="_blank">http://img191.imageshack.us/img191/3863/sipprofile.png</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Any thoughts on where to start looking? I was wondering if CUCM will continue to attempt the call if there is a problem with the MTP( I am using software MTP on CUCM at the moment). If this is the case then I can see why the SDP does not appear in the INVITE (assuming the MTP is broken), but not why it does not appear in the ACK.<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><o:p> </o:p></p></div><div><p class=MsoNormal><span style='color:#888888'>David<o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>