flexfax: Probemodem and faxmodem Fail

[CN Liu <cn@mail.sinyih.com.tw>]

Hello!

I fail to configure hylafax 4.0pl2 for Zyxel 1496E in Linux 2.0.35.
Replacing Zyxel 1496E with another low-end modem still can not generate
any workable speed by probemodem.

These are what I tried:

mail:/var/spool/fax# probemodem cua0
Hmm, there does not appear to be an fuser command on your machine.
This means that I am unable to insure that all processes using the
modem have been killed.  I will keep going, but beware that you may
have competition for the modem.

Now we are going to probe the tty port.  This takes a few seconds,
so be patient.  Note that if you do not have the modem cabled to
the port, or the modem is turned off, this may hang (just go and
cable up the modem or turn it on, or whatever).

Probing for best speed to talk to modem: 38400 19200 9600 4800 2400 1200

Unable to deduce DTE-DCE speed; check that you are using the
correct device and/or that your modem is setup properly.  If
all else fails, try the -s option to lock the speed.

mail:/var/spool/fax# cu -s 38400 -l cua0
Connected.
at+fsp=?
0,1
OK
at+fclass=2.0
OK
at+fcc=?
(0,1),(0-5),(0-2),(0-2),(0,1),(0,1),(0),(0-7)
OK
Killed
mail:/var/spool/fax# faxmodem -c
"(0,1),(0-5),(0-2),(0-2),(0,1),(0,1),(0),(0-7)
" cua0
FIFO: open: No such device or address
mail:/var/spool/fax# ls -l
prw-------   1 uucp     10              0 Oct 28 19:28 FIFO|
drwx------   2 uucp     uucp         1024 Oct 27 18:08 archive/
drwxr-xr-x   2 uucp     uucp         1024 Dec 23 14:20 bin/
drwxr-xr-x   2 uucp     uucp         1024 Oct 29 18:55 client/
drwxr-xr-x   2 uucp     uucp         1024 Dec 23 19:04 config/
prw-r--r--   1 root     root            0 Dec 23 19:07 cua0|
....

(I manually created cua0| manually before running faxmodem -c.)

Script probemodem is too complicate for me to trace. I have no clue.
Please help!

Thanks a lot!