[Asterisk-bsd] DTMF recognition problem

[Andy Valencia]

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Hi,

I have a TDM400P (3 FXS, 1 FXO) running under FreeBSD 5.4.  It all works
well, both FXO and FXS.  However, I'd now like to move my ham radio phone
patch onto one of the FXS ports.  This has plugged fine into Ma Bell as well
as my Vonage phone adaptor.  But when plugged into Asterisk, it comes off
hook and gets dial tone just fine, but will not recognize DTMF digits.

Are there any knobs I should know about to try and tweak this?  The only
other potential oddity is that there's probably some sub-audible tone at 123
hz coming through--but I can't imagine the DTMF decoder getting thrown by
that.  Any other ideas on what's throwing this off?

Thanks,
Andy Valencia