[Asterisk-Users] fax detection: false positive

[Andy Hester]

john lawler wrote:

> Hi guys,
>
> I just moved from Asterisk release 0.5.0 to CVS 2003-12-22, and after 
> overcoming a few changes in my configuration, I encountered one 
> problem that I couldn't shake that was working fine in 0.5.0.
>
> It's the fax detection.  I just have a simple extension setup like this:
>
>     exten => fax,1,Dial(Zap/4,30,tr)
>     exten => fax,2,Hangup
>
> in my main incoming context.  This used to work fine, I don't think I 
> ever had a false positive or negative, but now just about every call 
> (possibly every call) that comes in when I've got that extension 
> defined rolls to my fax machine on Zap/4 immediately.
>
> I'm sure others have encountered this and I missed a post on some 
> change to the configuration that might be causing this.
>
> Thanks for your help.
>
> jl

The issue is in dsp.c.  Check out an old copy of dsp.c and replace the 
one in your source tree.  Then recompile.  I am using the file from 
12/08/03, as someone noted that this one works.

ajh