Hi list,
I'm looking for a way to filter ingress DTMF on A leg.
I receive "bad" DTMFs from SIP provider (Signal A,B,C, etc ...) I want to filter only these DTMF, not all others.
I receive only RFC2833 DTMF.

Ex:
Sip Provider -- (DTMF 1,A,2,C on A leg) --> FS --> (DTMF 1,2 on B leg) -->

Do you have an idea for me please ?

Thanks in adavance


FS version: FreeSWITCH Version 1.3.13b+git~20130213T200819Z~cd7d1efc2a (git cd7d1ef 2013-02-13 20:08:19Z)