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Appendix A: Network Examples 351

P0911588 Issue 01 Enterprise Edge 2.0 Programming Operations Guide

In this example, outgoing public network calls dialed from an Enterprise Edge set

are passed to the Meridian M1, and the Meridian M1 is responsible for seizing a

public trunk. For this reason, the “9” prefix is left in the number passed to the

Meridian 1.

Note: Ensure that Line Pool A is used for IP trunks.

Guidelines to setting up Meridian M1 in this example

In order for the digit counting algorithm for outgoing IP calls to take into account

this extra digit, the Private Network Access Code must be set to “9” on each

Enterprise Edge system.

The Meridian M1 must recognize incoming 2xxx and 6xxx DID calls, and route the

call over IP trunks to either the East or West end offices.

The Meridian M1 must recognize numbers starting with “9” as public numbers,

whether the numbers are dialed by Meridian M1 users or by Enterprise Edge users.

Toll bypass with Enterprise Edge VoIP Gateway

This example shows a private network composed of one Enterprise Edge system in

Toronto and one Enterprise Edge system in Ottawa, connected over IP trunks

through a corporate IP network.

In this network, each Enterprise Edge system has a PRI trunk to the Central Office,

and IP trunks to the other Enterprise Edge system. Calls from the Toronto system

to the Ottawa system and the Ottawa public network are made over IP trunks with

fallback to the PRI trunks when IP trunks are congested. This configuration allows

for cost savings by using the corporate IP network whenever possible, thereby

bypassing toll charges that would be incurred by using the public network.

To West End:

Service/Routing Service Destination Code 2

Normal route 001

Absorb None

To Public Network:

Service/Routing Service Route 002

Use Pool A

External # (leave blank)

DN type Public

Destination Code 9

Normal route 002

Absorb None

Heading Parameter Setting

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Avaya BCM 2.0 Programming Guida Utente Pagina 351