4.3BSD-Tahoe/usr/lib/uucp/L-devices

# The format of the L-devices file is:
#Caller	Line Useful Class Dialer
#
# The following lines are hard-wired
#
#DIR ttyh3 unused 300 direct
#DIR ttyh3 unused 1200 direct
#
# The following lines are ACUs
#
ACU cul0 unused 1200 hayes
#ACU cul0 cua0 1200 dn11
#ACU cul1 cua1 1200 dn11
#ACU tty49 unused 1200 ventel
#ACU tty49 unused 300 ventel
#ACU tty48 unused V1200 vadic
#ACU tty47 unused 1200 hayes