Instruction manual

MERLIN LEGEND Communications System Release 5.0
System Planning
555-650-112
Issue 1
June 1997
About This Book
Page xxxTerms and Conventions Used
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 xxxiii 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 0
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 New
trunk module line/trunk module
trunk jack line/trunk jack
station extension
station jack extension jack
analog data station modem data workstation
7500B data station ISDN terminal adapter data workstation