Terms And Conventions Used - Lucent Technologies MERLIN LEGEND Release 7.0 System Programming Manual

MERLIN LEGEND Communications System Release 7.0
System Programming 555-670-111
About This Guide

Terms and Conventions Used

apply), or contact your Lucent Technologies representative if you need assistance
when installing, programming, or using your system.
Outside the USA, if you need assistance when installing, programming, or using
your system, contact your Lucent Technologies authorized representative.
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. In actual usage, however, the terms line and
trunk are often applied interchangeably. In this guide, we use line/trunk and lines/
trunks to refer to facilities in general. Specifically, we refer to digital facilities . We
also use specific terms such as personal line , ground-start trunk , Direct Inward
Dialing ( DID) trunk , and so on. When you talk to personnel at 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, as follows:
Old Term
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
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New Term
line/trunk module
line/trunk jack
extension
extension jack
modem data workstation
terminal adapter workstation
ISDN terminal adapter data
workstation
analog voice and
modem data workstation
MLX voice and
modem data workstation
modem data-only workstation
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April 1999
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