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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Call-Handling Scenarios
Page 2-67Network Configuration Scenarios
2
Routing for Outside Calls 2
This topic examines routing for hypothetical outside calls, to show how the system
managers in Scenario 3 maximize cost benefits from the private network. As you
study the example call routes in Table 2–17, page 2-68
, review the general setup
as described earlier in this section.
Note the following facts about routing for outside calls in this scenario:
■ Some DID calls that come into System K are actually destined for
System L. In a private network such as this one where one system has
blocks of DID numbers, digit manipulation can be used to route DID calls
from one system to another. In this example, System K has purchased a
block of DID numbers from a service provider.
■ At Systems K, L, and M, users make and receive 2B data calls. If an
outside 2B data call travels over PRI or BRI facilities and/or tandem PRI
facilities only, it can take place up to 128 kbps. However, if it is routed over
a PSTN T1 Switched 56 facility (such as the one connected to System M),
the 2B data call can travel at a rate no higher than 112 kbps.
■ A PRI dial-plan routed call can be sent across the private network to a
telephone extension. If ANI information is available and the call traverses
PRI facilities only, it can be displayed at the recipient’s extension. DID calls
do not provide calling party, but they do provide calling party name or
number information.
■ The call information signals for outside calls sent from System K or System
M to the centralized automated attendant indicate an outside call. This
allows a unique greeting and/or menu to be played.