Hi Mark,
Yes, it's a point-to-point link.
= TC
Somebody else mentioned ethernet; I know (without specific
recommendation though) that you can run fiber and use some inexpensive
media converters on each end to produce something that looks like
ethernet, without worrying about stringing wire between separate
electrical systems. Ethernet ports are cheaper than T3 ports too,
but then you'd still have to deal with shaping/limiting.
mm