System Functions and Features as of I7.9
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Call routing
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5. 9
Testing overflow routing in the PISN
When a connection is setup the system checks the availability of the selected path.
If it is not available due to overloading or due to a defect, an attempt will be made
to set up the connection via an alternative route, depending on the configuration.
There are two types of overflow routing:
•
Overflow routing within the private leased-line network:
Both the initial and the alternative connection path run via dedicated lines of
the private leased-line network.
•
Overflow routing via the public network:
The initial connection path runs via dedicated lines of the private leased-line
network while the alternative connection path runs via the public network.
Transmission of the CLIP number depends on the CLIP settings. See also the over-
flow situations illustrated in the example on
.