[Asterisk-bsd] DTMF tones upon FXS pickup

[Michael Iedema]

On 11/28/07, Michael Iedema <michael at askozia.com> wrote:
> On 11/22/07, Michael Iedema <michael at askozia.com> wrote:
> > Hey everyone,
> >
> > I'm hearing several DTMF tones each time I answer an analog phone
> > attached to my Asterisk install. After these tones are played, the
> > call is connected. I'm running 1.4.13 on FreeBSD 6.2 and zaptel 1.4
> > trunk.
> >
>
> After some more listening, these tones are the phone's extension
> number defined in Asterisk.
>
> Anyone else experiencing this?
>


This problem persists with:
 - FreeBSD 6.2-p10
 - Asterisk 1.4.17
 - Zaptel 1.4 revision 169

I really want to track this down but am having trouble understanding
chan_zap.c's caller-id spill and cadence code.

Any feedback at all on this would be great,
-Michael