Asterisk DTMF tones


How to make change all DTMF tones in same tones only.

Eg. In IVR press 12345 key means it gets different tones, but i want all are same tones only (security purpose).

Anyone help on this.


I can think of no clean way to do that.

If you’re dialing in via a SIP phone, the phone itself generates the tone playback and plays that tone out to Asterisk in the RTP (assuming RFC2833-style DTMF). You’d have to modify the phone not to present local playback of the tone.