Leased Line

line for fast data transfer

A leased line is a symmetric telecommunications line connecting two locations. It is sometimes known as a 'Private Circuit' or 'Data Line' in the UK. Unlike traditional PSTN lines it does not have a telephone number, each side of the line being permanently connected to the other. Leased lines can be used for telephone, data or Internet services. Some are ringdown services, and some connect two PBXes.
See more at Wikipedia.org...

<communications, networking> A private telephone circuit permanently connecting two points, normally provided on a lease by a local PTT.
(1998-03-24)