A connectionless network where the user is charged a flat fee instead of connection charges and per minute charges typically associated with long distance calls.
A dedicated circuit typically leased by a telephone company to a business for the full time exclusive use of that business. The 1980s and 1990s have seen growing freedom for businesses with such leased lines to sub-lease capacity to other businesses and organisations.
A communications line, from one point to another, leased from the telephone company for the exclusive use of a customer. See also point-to-point.