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Chapter 8 ISDN gateway administration

Introduction

This chapter covers general administrator tasks specific to the ISDN gateway.

Installing the ISDN gateway

You connect the ISDN gateway to your ISDN connection and to your Ethernet network. It is important that

you correctly install the unit. This is described in the ISDN gateway Getting Started Guide (supplied with

the unit and also available on the Codian web site).

The initial configuration of the unit, including IP settings, is also described in the Getting Started Guide.

Establishing a connection with the ISDN network

Before the unit can establish a connection with the ISDN network, you need to configure the ISDN settings.

Refer to the ISDN gateway Getting Started Guide and the online help topics “Configuring general ISDN

settings” and “Configuring ISDN ports settings”.

Routing calls between IP and ISDN networks

The default behavior of the ISDN gateway is to reject all calls. You must configure the ISDN gateway to

route calls in the required way. This is achieved by creating a dial plan.

The ISDN gateway uses the dial plan to determine how to route calls between IP and ISDN networks.

When the ISDN gateway receives a request to initiate a new IP to ISDN or ISDN to IP call, it examines the

called number (if available), and uses the dial plan to determine whether to reject the call, find out which

number should be called to initiate the outgoing part of the call, and check the allowed call bandwidth.

There are a number of different ways in which you can use the dial plan. For example, you can use the dial

plan to link specific bandwidths to certain prefixes, thereby enabling users to use the correct bandwidth for

an IP to ISDN call. You can also use the dial plan to enable the ISDN gateway to join incoming ISDN calls to

the correct conference on an MCU. These dial plan configurations are explained in greater detail and with

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Cisco ISDN GW 3241 Manual de usuario Pagina 51