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Unread 06-12-2007, 03:10 AM   #5
ctylor
 
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The SPA-3000 & 3102 introduce extra problems when you use the PSTN phone feature with it, and send DTMF, since more is going on than if you just used SIP alone.

That being said, even with my SPA-2100, I do not have consistent results. I do know of settings to look at though.

DTMF Process INFO
DTMF Process AVT
DTMF Tx Method
DTMF Tx Mode

Basically I have had good results with keeping method at "Auto" and then toggling the INFO and AVT from yes to no, or no to yes, keeping both at yes or both at no (all four possibilities), but I have never found one single configuration that was good for every call at every time, unfortunately. I don't think there is a perfect configuration. You almost have to be ready with the Sipura in your web browser to change these settings between calls if you need the DTMF to work.
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