<span style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt">I went through the source code and now understand better how dtmfmode=auto works. In testing I was able to resolve this by setting dtmfmode=auto. After further testing I will deploy it to production and see if it breaks anything but I am hoping this will be resolved for the long term.<br />
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<div>Thanks<br />
<br />
Bryant<br />
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<span style="font-family: tahoma,arial,sans-serif; font-size: 10pt;"><hr width="100%" size="2" align="center" />
<b>From</b>: "Bryant Zimmerman" <BryantZ@zktech.com><br />
<b>Sent</b>: Monday, January 30, 2012 3:54 PM<br />
<b>To</b>: asterisk-users@lists.digium.com<br />
<b>Subject</b>: Re: [asterisk-users] fall back to inband DTMF?</span><br />
<br />
<span style="font-family: arial, helvetica, sans-serif; font-size: 10pt;">I have an issue where one of the carriers that my up-line is using is not offering RFC-2833. I am getting the response from them that if RFC-2833 or SIP INFO is not offered then I should fall back to inband.<br />
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I only have RFC-2833 offered enabled on all phone sets and trunks. The Peer accounts are forcing RFC-2833. So how would I accomidate this issue as I never want inband used if RFC-2833 is offerd. As I understand it asterisk only has the option of one of the DTMF methods. Any ideas would be apperciated. Is there a way to not offer inband and still force asterisk to fall back and use it the carrier end forces it?<br />
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<div>Thanks<br />
<br />
Bryant</div>
</span></div>
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