I meant to say also.  See ucycom, and in particular the first URL I sent
about product and vendor ids.

callout devices are usually /dev/dty instead of tty.  They basically
don't check for CD.  So if this ends up on ugensa:

crw-------  1 uucp  wheel  66, 524288 Jul 13  2005 /dev/dtyU0
crw-------  1 uucp  wheel  66,      0 Jul 13  2005 /dev/ttyU0

And if ucycom:

crw-------  1 uucp  wheel  172, 524288 Jan 31  2007 /dev/dtyY0
crw-------  1 uucp  wheel  172,      0 Jan 31  2007 /dev/ttyY0