[Asterisk-Users] spandsp, rxfax, TDM400/zaptel, missed frames, any help?

[Rich Adamson]

> Sorry in advance if this is a FAQ...
> 
> I've got a working Asterisk setup based on A at H 2.2. I have a TDM400
> card with 2 FXS and 2 FXO ports; PSTN connections come in via the TDM
> card.
> 
> I haven't been able to get inbound fax with spandsp and rxfax to work.
> Occasionally an all-text fax will come in, though it's usually badly
> corrupted, but in most cases, it would appear that the call is
> terminated without successful transmission of the fax. I get logs that
> look what's included below.
> 
> >From reading the list, it looks like this is caused by the TDM card
> missing frames. Does that sound correct? If so, is there any relief in
> sight?

Its been a problem since the card came out a couple of years ago. So, no
it does not appear there is any relief in sight.