[asterisk-users] Problem with detecting fax on PRI/DAHDI channels

[Sawan Vithlani]

Hello all,

I am using  call files to dial out to a set of PSTN numbers. The calls
are going out fine and being handled correctly by the dial plan.

The problem occurs when I accidentally call a fax machine. I would
expect the dial plan to pick this up and jump to the "fax" extension
in the current context. This is not happening.

In the call file I send the call out via Dial(DAHDI/g0/XXXXXXXX) and
then it goes to my dial plan context:

[SendCall]
exten => start,1,Answer()
   same => n, Wait(5)
   same => n, ..... ;; do some more stuff

exten => fax,1,Verbose(got a Fax on ${EXTEN})
same =>n, Hangup()

;;;;

 I do get a message on the CLI telling me "Channel 63 detected a CED
tone from the network" but still no jumping to the fax extension.
This is while dialplan is in the Wait(5).

CLI> core show version
Asterisk 1.8.4.1-1digium1~natty built by pbuilder @ nighthawk on a
x86_64 running Linux on 2011-05-23 22:05:17 UTC

ISDN lines connected via Digium TE412P card.

I have "faxdetect = both" in chan_dahdi.conf in the general section as
well as specifically for the configured spans.


Would appreciate any help.

Thanks

Sawan