Avaya BCM50 Guia de Configuração descarregar pdf (Página 308)

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101

308 Chapter 32 Private networking: MCDN over PRI and VoIP

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Figure 98 MCDN networking, with a common public network connection

This example could represent a large head office (the Meridian 1) connected to several smaller

branch offices (the two BCMs). In this network, only the head office has trunks connected to the

public network.

The branch offices access the public network through the PRI to the head office. This

configuration allows for cost savings by consolidating the public access trunks. Users at all three

locations access the public network by dialing 9, followed by the public number. For example, a

user in the West End branch might dial 9-555-1212 (for a local call) or 9-1-613-555-1212 (for a

long-distance call). The BCM routing table routes these public calls to the Meridian 1. Routing

tables at the Meridian 1 will then select an appropriate public facility for the call.

Note that the Private Network Identifier (PNI) is programmed at each end of the links. The PNI

identifies the BCM to the Meridian 1 system.

Routing is set up such that network calls are made by dialing a four-digit private network DN. For

example, if a user in the West End branch wishes to call a user in the East End branch within the

private network, they dial 6221. Figure 98 illustrates this example.

The implications on the configuration on each node to access the PSTN through one network node:

• Each node must have the Private Network Access Code set to the value 9.

• Each node must have destination codes that match the Private Network Access Code plus

digits corresponding to calls terminating in the local PSTN. For example, if the Private

Network Access Code is 9, the node in Ottawa would require a destination code of 91613.

Similarly, Toronto would require the following destination code: 91416.

Network # 2221

Received # 2221

Internal # 2221

Network # 6221

Received # 6221

Internal # 6221

BCM

West-End branch

PNI= 1

BCM

East-End branch

PNI=1

Central

Office

Meridian M1

PRI (SL-1) PRI (SL-1)

DN: 4221

Voice mail or

Auto Attendant

PRI (public protocol)

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