Avaya BCM 2.0 IP Telephony Manual de usuario descargar pdf (Pagina 60)

60 Installation

Enterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02

Fallback to normal circuit-switched services configuration

If the measured Mean Opinion Score (MOS) exceeds the configured threshold for

any monitored gateway, the fallback to normal circuit-switched services is

triggered. This feature reroutes calls to other trunks such as PSTN, until the network

QoS improves to exceed the configured threshold.

IP trunks on the core telephony services use routes to determine which outgoing

facilities to use. A given destination code can have an alternate route configured.

This alternate route is used if the main route is not available to process calls. For

example, the alternate route is used if all the lines in a line pool are busy. See the

Systems Operation chapter of the Enterprise Edge Programming Operations

Guide. See Dialing plan section.

IP trunks also use this capability. One capability unique to IP trunks takes advantage

of the QoS monitoring that is part of IP Telephony. With fallback to normal circuit-

switched facilities enabled in the local gateway configuration, calls route to the

circuit-switched facilities if the QoS is below the permitted threshold.

The installer configures fallback as follows:

• Launch the Unified Manager.

• Select the IP Telephony radio button.

— Enable fallback in the local gateway configuration.

— Enable QoS monitoring for the required destinations in the remote gateway

configuration.

— Set the Tx and Rx thresholds (MOS numbers) for the required QoS.

• Launch Enterprise Edge Unified Manager.

— Configure all alternate routes for the IP trunks.

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Avaya BCM 2.0 IP Telephony Manual de usuario Pagina 60