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Introduction
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1
MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Introduction 1
This chapter describes the terminology and concepts that you should understand
before you plan and maintain a networked system. It includes the following topics:
■ Networking Concepts. In simple terms, explains what private
communications networks are, the benefits they offer organizations, and
fundamental concepts such as tandem switching and tandem trunking.
■ Tandem Switching and Tandem Trunking. Expands on the definitions of
tandem trunking and tandem switching by showing simple examples of
how these features are put into practice in different private network
configurations using different types of lines/trunks.
■ Uniform Dial Plan (UDP). Introduces the feature that allows system
managers in a private network to set up a dial plan for reaching extensions
at remote networked systems.
■ Centralized Voice Messaging. (Release 6.1 and later systems.) Adds the
capabilities of a centralized VMS/AA in a MERLIN LEGEND
Communications system private network.