[asterisk-users] Re: DTMF Tones

[Zeeshan Zakaria]

In my experience DTMF works reliably only when sent over RTP using rfc2833.
If you are using SIP, put this line under [general] section in sip.conf:
dtmfmode = rfc2833. If you don't want to put this in [general], you can also
put dtmfmode = rfc2833 in the declaration of each individual extension which
you want to send DTMF using rfc2833.
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