Ascotel IntelliGate 2025/2045/2065
668 Planning a private network Part 3
Fig. 3.58: Each system can be reached in two ways
Routes are used for outgoing routing, as described in "Example of networking",
page 681.
Route 2 in system 1 for example is used for connections from system 1 to
system 2. In this route trunk group 1 is now added in the first position and trunk
group 2 in the second.
Under normal circumstances calls will be routed directly from system 1 to
system 2 via trunk group 1. If, however, the lines of trunk group 1 are faulty or if
they are all busy, calls will be routed over trunk group 2 via system 3.
Connection reliability with the public network
To guarantee a high level of connection reliability also with the public network, it
is useful to connect at least two systems with the public network.
Overflow routing can then be implemented via the public network using Least
Cost Routing.
Trunk group 1
Trunk group 2
Trunk group 1 Trunk group 2
Trunk group 2
Trunk group 1
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PINX 1
PINX 3
PINX 2
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