Routing Schedules And Alternate Routes - Nortel BCM50 Configuration Manual

Figure 72 Carrier code call numbering sequence
Tips: The destination codes 9 and 91 used in the examples cannot be
used together. If you need the destination code 91 to direct long-distance
calls, you must create a separate set of codes that use local calling routes.
These codes would be, for example, 90, 92, 93, 94, 95, 96, 97, 98 and 99.
You can also use 9 A. (A represents a wildcard "Any".)

Routing schedules and alternate routes

It can be less expensive to use another long-distance carrier at a different time of day. Continuing
with the example used in the previous flowchart, the lines that supply local service in normal mode
are also used for long-distance service after 6 p.m. because that is when rates become competitive.
For the system to do this automatically, you must build another route.
All the lines used by a route specified by a destination code are busy when a call is made, you can
program other routes that the system automatically flows the calls to, or you can allow the call to
overflow directly to the Normal route schedule (usually the most expensive route). However, this
only takes effect if an active routing schedule is applied to the line. Overflow routing is not
available in Normal mode.
You must create overflow routes for each destination code for which you want to allow overflow
routing.
Chapter 24 Dialing plans
Networking Configuration Guide
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