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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Call-Handling Scenarios
Page 2-74Network Configuration Scenarios
2
Scenario 4: Four Systems in a Star,
Mixed Facilities 2
In this scenario, one MERLIN LEGEND Communications System acts as the hub
and three systems are connected to it in a
star configuration
to the hub. The
systems are linked by tandem PRI and analog tie facilities. Figure 2–5 on page
2–75 shows this more complex private network.
NOTE:
It is recommended that PRI lines, rather than tie lines, be used between
MERLIN LEGEND Communications systems in a private network that
utilizes the Centralized Voice Mail feature. Refer to Table 1–1, page 1-11
for advantages of PRI lines.
Note the following general facts about this larger private network, which requires
more coordination in order to set up:
■ The systems span three different time zones. The private network is
configured for the automated attendant on System E to provide Night
Service coverage for all systems. Systems E and H go into Night Service
before Systems F and G, therefore, the caller will hear the Night Service
greeting. The Night Service greeting should be general enough to
accommodate different time zones.
■ System H, F, and G users and calling groups receive coverage from the
centralized VMS/AA on the hub, System E.
■ System H serves a warehousing and shipping operational facility. It has
one loop-start line connected to the PSTN for emergency and power-failure
backup purposes. For all other outside calls, System H uses PSTN
facilities that are connected to other systems in the private network. It is
located relatively near System E, but not in the same area code.
■ System G is a small branch office that has fewer extensions and requires
fewer private network facilities than the larger Systems E and F.
■ The system manager at System E is the coordinating system manager for
the private network. Any changes at local systems are cleared through this
person, who ensures that the changes do not interfere with private network
operations. If changes at one system require changes at all systems as
well, the System E manager sees that the proper modifications are made
and that system forms are updated accordingly.
■ To avoid conflicts, the dial plan of each system is unique within the private
network.