Terms And Conventions Used - Lucent Technologies MERLIN LEGEND System Manager's Manual

MERLIN LEGEND Communications System Release 5.0
System Manager's Guide 555-650-118
About This Book

Terms and Conventions Used

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when installing, programming, or using your system.
Terms and Conventions Used
The terms described here 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 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 guide, we use lines/trunks and line/trunk
to refer to facilities in general. Specifically, we refer to digital facilities . We also use
specific terms such as personal line , ground-start trunk , DID trunk , and so on.
When you talk to your local telephone company central office, ask about the 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.
Old
trunk module
trunk jack
station
station jack
analog data station
7500B data station
analog voice and data station
digital voice and analog data station
analog data-only station
7500B data-only station
MLX voice and 7500B data station
0
New
line/trunk module
line/trunk jack
extension
extension jack
modem data workstation
ISDN terminal adapter data workstation
analog voice and modem data
workstation
MLX voice and modem data workstation
modem data-only workstation
ISDN terminal adapter data-only
workstation
MLX voice and ISDN terminal adapter
data workstation
Issue 1
June 1997
Page xxviii