I found this by using
www.google/linux
After many research I found the information at
http://hylafax.sourceforge.net/man/hylafax-config.php
Read attentively.
Basicly 2 files to configure /etc/hylafax/config and /etc/hylafax/config.ttyXXXX
where XXXX reflects the modem device.
I insist read the document attentively.
The format is
tagvalue: x . It is easy to cut and paste from the web site but you have to add the ":" at the end of the tag name if you want it to be valid
. Also remove the words "integer" and other data type definition from it. Save the files and restart the hylafax server, and you'r done.