HylaFAX The world's
most advanced open source fax server
Re: Received Fax question
On Fri, 24 Oct 1997 firstname.lastname@example.org wrote:
> Hi folks,
> I'm using a MultiTech Systems MultiModem, MT2834ZPX.
> The config file was built using faxaddmodem without
> straying from the defaults. However, when viewing incoming
> text faxes (which were sent as Postscript files) with
> Ghostscript (using either fax2ps or fax2tiff), the images
> looked distorted ("smudged" is an apropos term). I edited
> the modem config file setting ModemRate down to 9600 and it
> looked much better. I also tried leaving ModemRate at 38400
> and set ModemFlowControl to xonxoff instead of rtscts and it
> also looked fine.
> Is this an appropriate workaround? Or have I created potential
> new problems?
Most modem chips only work with a max speed of 19200 with xon/xoff
flow control. However, it's always better to talk to modem at your
maximum possible speed with rts/cts flow control. To get around this
you can alter your config files to have the following:
ModemType: Class2 # use class 2 interface
ModemRate: 38400 # locked for fax sending&receiving
ModemFlowControl: rtscts # default
# Chip locks the line rate and switches to xon/xoff flow
# control when receiving facsimile--we must follow suit.
ModemAnswerFaxBeginCmd: "<19200><xon>" # switch line rate & flow control
Jonathan Chen <email@example.com> Once is dumb luck.
Twice is coincidence.
Three times and Somebody Is Trying To Tell You Something.