[asterisk-users] Fax Machine Options

[Lee Howard]

Joseph L. Casale wrote:
> It turns out their SIP provider doesn't support the T.38 protocol for faxing.
> Their statement is if you really need it, use ulaw and AstraFax? I don't understand
> how AstraFax makes a difference in the process?

It doesn't make a difference.  uLaw over SIP/UDP still involves jitter 
which results in data loss ... regardless of what fax device or program 
you use.

As I tried to indicate in my first reply... I would encourage you to 
order an analog phone line for that fax machine.  There are other 
options, but in most cases the customer is happy to pay the line charge.

Thanks,

Lee.