1. In a
system , a shared boundary,
i.e., the boundary between two subsystems or two devices. (
188 )
2. A shared boundary between two functional units, defined by specific attributes, such as functional characteristics, common physical
interconnection characteristics, and
signal characteristics.
3. A point of communication between two or more processes, persons, or other physical entities.
4. A point of interconnection between
user terminal equipment and commercial
communications facilities.
5. To interconnect two or more entities at a common point or shared boundary.