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Glossary
GL-2 Issue 1 June 1998
D
Dedicated Subscriber Lines
Communication lines (usually twisted pair) that are used to connect on-
premise telephone equipment (such as a PBX) to the Central Office. Also
referred to as direct lines.
Dial Line
A telephone line which is part of the Public Switched Telephone Network
and is accessed through the DEFINITY Extender 1100 System’s
automatic dial-up function.
F
Facility
Transmission facilities. Usually a two metallic pair set of cords, but can
be telephone company carriers, T-1, microwave or dial-up
telecommunications lines.