Terms And Conventions Used - Lucent Technologies MERLIN LEGEND Release 6.0 Installation Manual

MERLIN LEGEND Communications System Release 6.0
Installation 555-660-140
About This Book

Terms and Conventions Used

Terms and Conventions Used
In this document, the terms in the following list are used in preference to other,
equally acceptable terms for describing communications systems.
Lines, Trunks and Facilities
Facility is a general term that designates a communications path between a
telephone system and the telephone company central office. Technically a trunk
connects a switch to a switch, for example the MERLIN LEGEND
Communications System to the central office. Technically, a line is a loop-start
facility or a communications path that does not connect two switches (for
example, an intercom line or a Centrex line). However, in actual usage, the
terms line and trunk are often applied interchangeably. In this book, we use
line/trunk and lines/trunks to refer to facilities in general. Specifically, we refer to
digital facilities . We also use terms such as personal line, ground-start trunk,
Direct Inward Dialing (DID) trunk, and so on. When you talk to your local
telephone company central office, ask them which terms they use for the
specific facilities they connect to your system.
Some older terms have been replaced with newer terms. The following list
shows the old term on the left and the new term on the right:
trunk module
trunk jack
station
station jack
analog data station
digital data station
7500B data station
analog voice and analog data station
digital voice and analog data station
analog data only station
digital data only station
7500B data only station
digital voice and digital data station
MLX voice and 7500B data station
line/trunk module
line/trunk jack
extension
extension jack
modem data station
terminal adapter
terminal adapter
analog voice and modem data
MLX voice and modem data
modem data only station
terminal adapter only station
terminal adapter only station
MLX voice and terminal
adapter station
MLX voice and terminal
adapter station
Issue 1
February 1998
Page xlix