[Asterisk-Users] SpanDSP - Still can't send

[Rod Bacon]

I have googled until blie in the face, WiKi'd until physically exhausted 
and searched through every Asterisk repository that I can find, all to 
no avail...

No matter which version of SpanDSP I use, with which version of libtiff, 
Asterisk, ... I simply cannot send faxes.

I can receive faxes *perfectly* (sending from standard fax macine on 
POTS) into tiff file (via Digium analogue card), but when I try to send 
the same file back, to the same fax machine, nothing happens.

The fax rings, answers, then disconnects shortly after (fails 
negotiation?). I would love to enable logging in detail, but am unsure 
where to enable logging for SpanDSP.

Can anyone point me in the most logical direction, please?