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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">Hi Guillermo,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">Thank you for your response. I wish understood more, but let me tell what I know and ask you another question.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">My (voice) ISP only supports “ULaw, ALaw, GSM and G729a”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">My phones are all Cisco504G’s. They support “G711u, G711a, G729a, G722, G726-16 (-24, -24 and -32). Then there are 2 other items that must be relevant: “DTMF Process AVT:
Yes or No” and “DTMF Tx method: Inband, AVT, Info, Auto, Inband + Info, AVT + Info”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">I think Tx Method defaulted to AVT+Info as I got warnings about receive DTMF in INFO on FS. I am set to AVT and DTMF is working fine.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">Here is what I think (I would know, but it may not be correct) about codecs:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">G711u = ULaw, G711a=ALaw, The phones don’t seem to support GSM (?) and my VISP doesn’t support 722 or any 726. So that leaves me with G711a, G711u, G729. I have abundant bandwidth
everywhere involved. I know G729 is fairly high quality compression with regard to bandwidth vs audio quality. I also know I have to get a license for each G729 channel on FS for about $10 each.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">I do not understand the difference in G711u and G711a.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">What is my best choice for DTMF Tx Method? And codec?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">Thank you for your time.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A">Sean<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#44546A"><o:p> </o:p></span></p>
<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""> freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org]
<b>On Behalf Of </b>Guillermo Ruiz Camauer<br>
<b>Sent:</b> Wednesday, May 21, 2014 7:53 PM<br>
<b>To:</b> FreeSWITCH Users Help<br>
<b>Subject:</b> Re: [Freeswitch-users] IVR codec issue (I think)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If possible, try to use RFC-2833 for the DTMF and you shouldn't have any codec problems. 711u is only required if you are doing INBAND DTMF.<o:p></o:p></p>
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<p class="MsoNormal">Guillermo<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, May 21, 2014 at 6:35 PM, Ian McMaster <<a href="mailto:ian.mcmaster@gmail.com" target="_blank">ian.mcmaster@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Try:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">export data="absolute_codec_string=PCMU"<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">before the answer in the dialplan.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">After answer, the codec is already established.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Ian.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, May 21, 2014 at 5:22 PM, Sean Devoy <<a href="mailto:sdevoy@bizfocused.com" target="_blank">sdevoy@bizfocused.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><img border="0" width="31" height="31" id="_x0000_i1025" src="cid:image001.gif@01CF7533.E75C4700"><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A">HI Everybody!</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A">I had a recent problem where a transferred call’s audio was highly degraded. The cause was identified as mismatched codecs – thanks again.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A">Today, I have a VERY VERY similar problem. The difference is that the first step is an IVR, not the receptionist. How do I set the CODEC for an incoming
call to 711u when it is routed to an IVR.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#44546A">Sean</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">_________________________________________________________________________<br>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
_________________________________________________________________________<br>
Professional FreeSWITCH Consulting Services:<br>
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<a href="http://www.freeswitchsolutions.com" target="_blank">http://www.freeswitchsolutions.com</a><br>
<br>
FreeSWITCH-powered IP PBX: The CudaTel Communication Server<br>
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<br>
Official FreeSWITCH Sites<br>
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<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <br>
Guillermo Ruiz Camauer<o:p></o:p></p>
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