On a recent install of Elastix 2.02 (asterisk 1.6) install I noticed that my usuall trunk DTMF setting for Cbeyond no longer worked. I could not use any IVR’s. To fix remove the DTMF setting on the cbeyond trunk. Go to unembedded freepbx. Under tools choose Asterisk SIP settings. Under Other SIP settings put in the following below. Reset Asterisk and you should be good to go.
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