A leased line is a private bidirectional or symmetric telecommunications line between two or more locations provided in exchange for a monthly rent. Leased lines can be used for telephone, data or Internet services.
Typically, leased lines are used by businesses to connect geographically distant offices. Unlike dial-up connections, a leased line is always active. The fee for the connection is a fixed monthly rate. The primary factors affecting the monthly fee are distance between end points and the speed of the circuit. Because the connection does not carry anybody else's communications, the carrier can assure a given level of quality.
An Internet leased line is a premium internet connectivity product, delivered over wireless normally, which is dedicated and provides uncondensed, symmetrical speeds, full-duplex. It is also known as an Ethernet leased line, DIA line, data circuit or private circuit.