Lucent Technologies 555-661-150 User Manual

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Introduction 
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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.