Lucent Technologies 555-661-150 manual Intersystem Calling

MERLIN LEGEND Communications System Release 6.1	Issue 1
Network Reference 555-661-150	August 1998
2 Call-Handling Scenarios
Network Configuration Scenarios	Page 2-29
Intersystem Calling	2

This topic illustrates how different types of calls are made and received in Scenario 1, using the extension numbers and extension equipment types shown in Figure 2–1. Table 2–5, page 2-30 enumerates some sample calls, showing how they are displayed at different recipients’ extensions within the private network. As you review this information, notice the following features:

■Because the private tandem trunks are PRI, the systems display calling name, calling extension number, or both for arriving non-local dial plan calls. The display varies according to the display preference programming for the MLX extension. Contrast this display with those in Scenario 2, Table 2–12, page 2-55.

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Wherever a person is in the private network, he or she dials another private network user the same way regardless of location.

Manually transferred calls within the private network display in the same way as direct calls between extensions. The originating extension information is shown, with no indication that the call is a transfer.

■Both outside callers and callers within the private network hear Music On Hold when their calls are transferred to a non-local extension.

■PassageWay client screen displays vary depending upon the PassageWay

implementation. Therefore, the table shows the information that the system can send to the CTI-linked application; if an MLX-20L®, for example, were a display telephone receiving the call, the display would appear as shown in the table.

■For centralized VMS/AA, call information signals are sent with the call from the remote system over the PRI tandem trunk so that the centralized VMS/AA can distinguish between inside and outside calls. Message Waiting light updates are sent over the PRI signalling D-channel from the central site to the remote system so there is no need to compete with voice calls for updates.