[Asterisk-Users] fax over tdm400p

[Jean-Denis Girard]

Andrew Kohlsmith a écrit :
> On January 18, 2005 03:24 am, Sergio wrote:
> 
>>I'm unable to get faxes working over tdm400p (4fxs modules)
>>Too many errors sending and receiving faxes with an analog fax
>>1) echocancel=no on the zap channels
>>2) ztmonitored the channel for a good/low audio volume
> 
> 
> I have two fax machines, a Canon IR3300 and an old Epson laser fax.  I also 
> have a stamp machine that calls in for more money.
> 
> When these devices were connected to * via a T100P and Adit600 channel bank 
> everything worked *great*.  I could send and receive faxes without issue, and 
> the stamp machine had no trouble.
> 
> I got rid of the channel bank since I use a PRI connection between our KSU and 
> * now.  I bought a TDM430P for these three devices.
> 
> I can now send faxes just fine, but I cannot for the life of me get reliable 
> fax reception, nor can I get the stamp machine to work well.  I took out the 
> T100P so there was only one TDM card in the machine (in case there was a 
> problem with interrupts or something) but that was not the problem.  There is 
> just something about either the TDM400P card itself or its driver which makes 
> fax reception (and modem communications to a greater extent) unreliable.
> 
> As I said, fax transmission works great.  Weird eh?
> 

The situation is opposite here: I have a Philips fax connceted to an fxs 
port of a TDM31B, and receiving from the fax to * with rxfax works 
great, while transmitting with txfax *never* works...