modem locking .. I am missing something!

["Todd T. Fries" <toddf@acm.org>]

holly# ps -ax | grep faxgetty
11726  p2 S      0:00 grep faxgetty
30973  ?  S      0:00 /var/hylafax/sbin/faxgetty modem
holly# ls -l /dev/modem
lrwxrwxrwx   1 uucp     uucp            9 May 20 17:19 /dev/modem -> /dev/cua0
holly# dip -t
DIP: Dialup IP Protocol Driver version 3.3.7o-uri (8 Feb 96)
Written by Fred N. van Kempen, MicroWalt Corporation.

DIP> port modem
DIP: tty: open(/dev/modem, RW): Device or resource busy
holly#

is this supposed to work or not?
--
todd