On Wed, Apr 14, 2004 at 05:11:46PM -0400, Brian Cuthie
wrote:>
> Should FAX transmission generally work through Asterisk and a TDM400P
> connected through a PSTN gateway? At first blush I'd think that if
> they're all g.711uLaw encoded that it would work. But experience shows
> otherwise. Is there a better way to do FAX?
Brian, I have three implementations that are faxing. One uses the TDM400P to
connect the fax machine to and the other two use channel banks connected to *
via T100P. One of the channel banks is an Adtran 750 and the other is a Zhone.
I have faxing working in all three configurations, however, I had to rig the fax
machine on the TDM400P to only negotiate 4800 baud. Prior to this, I was
getting a high error rate and the faxes would terminate at various points. I
had this effect for both inbound and outbound faxes.
In my case, I absolutely see a performance difference between the TDM100P and
the channel banks listed.
Maybe someone else has some experience to share.
Walker
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