MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Introduction
Page 1-8Tandem Trunking and Tandem Switching
1
In the next sections, we will look at this and other private network configurations
and examine more carefully the tandem trunks that link systems in private
networks.
Network Configurations 1
This topic looks at some sample private network configurations and the
differences among them. It does not illustrate
all
of the possible ways that private
networks can be connected.
Figure 1–1
, as noted above, shows a series configuration, where systems are
arranged in a line with no central system acting as a hub. In Figure 1–1
, Systems
A and D are
peripheral
systems, because neither connects to more than one
switch in the private network. Note that a series configuration can consist of only
two systems.
Figure 1–2
shows the second possible arrangement for private networks, called a
star configuration
.
Figure 1–2. Star Configuration: Five Systems
ML B
ML D
ML A
ML C
PSTN
PSTN
PSTN
PSTN
PRI
PRI
PRI
PRI
DEF E
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