Philip et.al:
I'm thinking it is possible to do fax detection over SIP trunks as I
currently do this with SIP connection to an SPA-3000.
What is required is that the SIP trunk be configured to hand over the
call immediately. That is, it goes from 100 -> 180 -> 200 right away.
This way, you can use NVFaxDetect to listen to the audo channel of the
'Rings' and then the pickup sounds of the callee.
Note: If you are receiving calls this way, you may looks Caller ID this
way (unless of course somebody adds software detection/dsp-processing of
Caller ID signals to NVFaxDetect).
Kevin
[EMAIL PROTECTED] wrote:
yes fax detection works great in asterisk but keep in mind the
incomming lines
have to support fax tones etc.. ie you cannont have a sip trunk
forward by a
terminator and have hopes of getting a fax on it.. if you have a pri
or regular
pstn lines no worriies :)
its good to add ringing(3) in your incomming dial rule so that it has
enought
time to decern the fax tone, other than that should work fine.
Note * big not ... spandsp is a little broken in 1.2(as in dosnt
compile nicly
like in 1.0.9) (im currently fixing mine) so check the documents on
the voip
wiki for the lines in the c code to change.
philip mullis
