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

MERLIN LEGEND Communications System Release 6.0
System Planning 555-660-112

Terms and Conventions Used

2. A list of forms or information that will be needed for particular procedures
appears at the beginning of each chapter and section.
3. Where appropriate, examples of completed forms are included so you can
confirm what you have done.
Since this book assumes that you are familiar with the system, detailed
information about equipment, features, and programming are not included. Refer
to the following documentation for additional information:
System Programming gives procedural instructions for programming
system features.
User's guides and operator's guides give procedural instructions for
programming and using telephone features.
"Related Documents" on page xli provides a complete list of system
documentation together with ordering information.
In the USA only, Lucent Technologies provides a toll-free customer Helpline
24 hours a day. Call the Helpline at 1 800 628-2888 (consultation charges may
apply), or call your Lucent Technologies representative, if you need assistance
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.
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Issue 1
February 1998
Page xxxviii
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