[asterisk-users] fax detection without answer

[JD]

Generic question,

Is there a way to detect a fax call without actually taking it as a fax  
call? In a non-universal manner?

In other words, if fax tones are detected on the incoming call (on a 
Sangoma PRI card for example), I'd like to transfer that call back out 
of the PRI to a dedicated FAX system _if_ that DID number is one that 
has that service.

It would almost have to be a system variable. GotoIf($[${FAXDETECT} = 
"YES"]? faxtransfer)

Any suggestions in this regard?

John