DTMF problems
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DTMF digits are skipped
DTMF is handled by Asterisk. If some digits are missing - that means that your Provider is not delivering DTMF codes correctly.
Possible steps to fix situation:
- Enable debug mode in the Asterisk CLI to be informed of DTMF events
- Change DTMF type to RFC2833 (if it is other type)
- In /etc/asterisk/sip.conf set relaxdtmf=yes and reload Asterisk
- Change Provider
See also: