[Asterisk-Users] soho fax suggestions?

Rich Adamson radamson at routers.com
Sun Feb 13 07:12:55 MST 2005


Steve,

> >Need to replace our older soho fax machine with something more current.
> >Would like to run the fax line through *, but haven't been able to
> >make spandsp work correctly with digium TDM04b card. Our fax volume
> >
> This seems to be a problem with the current wctdm driver. It seems to be 
> broken for audio going out. I used to be able to send faxes reliably 
> using spandsp and a TDM40P card, but I no longer can. I haven't had time 
> to look in detail at what is wrong.

I'd love to get this working for receive only. We probably get something
in the neighborhood of 90% junk/spam faxes each week, and being able to
view them online (and forward to the appropriate office) would be very
helpful.
 
> If spandsp doesn't work now, spandsp won't work through a T.38 channel.

I was afraid of that.

> It seems the T.38 in a number of units doesn't really work. I'm not 
> clear how widespread that problem is, but since there are only a few 
> suppliers of protocol stacks for these boxes I suspect it may be widespread.

Okay, then it would appear my best choice for the short term is to
try to get spandsp working again (for incoming fax). I tried somewhere
around spandsp-pre4, but got totally lost with the unfamiliar debug
messages and my inability to translate those messages into corrective
action steps. (I can arrange other methods for transmitting a fax.)

Is there any kind of reference document available from anywhere that 
would help me understand the spandsp debug messages? More then willing
to give it another try with current cvs head (patching manually is not
a problem).

Rich





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