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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Call-Handling Scenarios
Page 2-2Networking Guidelines
2
Networking Guidelines 2
This topic outlines general planning and setup considerations for networked
systems, providing the information that you need in order to understand the
sample private network scenarios presented in the next section of this chapter.
Security issues are discussed in greater detail in Chapter 4, “Security,” and in
Appendix A, “Customer Support Information.”
When systems are networked, follow these guidelines in order to make
implementation of private network features go smoothly. These guidelines are
based on the assumption that you plan to use the features listed below. Therefore,
a coordinating system manager to oversee network -affecting changes is
recommended.
■ Non-local dial plan for intersystem calling among extensions located on
different systems on the private network
■ ARS dialing via private networked trunks to allow users in one system
to access the public switched telephone network (PSTN) facilities
connected to one or more other networked systems
■ UDP routing for intersystem calling and ARS use of tandem trunks
Whether you are working alone to manage multiple systems in a private network
or working with others who manage other systems in a private network, the overall
planning considerations affect all networked systems.
The following topics do not explain programming procedures or details of all
system features that the sections reference. For detailed feature information, see
the
Feature Reference
. For detailed programming procedures, see
System
Programming
.
Non-Local Dial Plan 2
System managers in a private network create non-local dial plans so that local
system users can call extensions in remote networked systems. This
intersystem
dialing
is transparent to system users; they dial these calls as though they were
intercom calls, using System Access (SA) or Shared System Access (SSA)
buttons. Chapter 5, “Network Management
,” includes information about such
parameters as the valid number of digits, extension ranges, and patterns for
programming non-local dial plans and routes.
A non-local dial plan consists of extension numbers for the following:
■ Stations
■ Adjuncts
■ Listed Directory Number (LDN)
■ Remote Access