[Asterisk-Users] digium card fax detect AND spandsp

[Ryan Courtnage]

Hi all,

I've run into 2 separate problems relating to fax:

1) Using tdm400p + fxo, Asterisk is unable to detect the fax from some 
fax machines (from others it can).  Using zap barge, I can confirm that 
these troublesome calling fax machines _do_ send the fax tone loud and 
clear.  Are there certain circumstances where I should expect a Digium 
card to fail in detecting a fax?

2) Using spandsp & rxfax, I can consistently reproduce a problem where 
my client's * box cannot receive a fax sent from Windows-based HotFax.  
HotFax hangs up with error "Phase B Error".
Watching the verbose * console, it appears that there is some useful 
communication between spandsp and the HotFax (output is here: 
http://voxbox.ca/tmp/rxfax.html).

Oddly enough, faxing between HotFax and spandsp _used_ to work, before 
I switched her * box over from an x100p to a tdm400p+fxo (although I 
can't be 100% certain the card change is to blame, since zaptel and 
asterisk have also both been updated).

Any comments on either of these issues is appreciated,
Thanks
RC


Ryan Courtnage
Coalescent Systems Inc
403.244.8089
www.voxbox.ca