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IP Telephony Configuration Guide

Chapter 2

Prerequisites checklist

Before you set up voice over IP (VoIP) trunks or IP telephones on a Business Communications

Manager, complete the following checklists to ensure that the system is correctly set up for IP

telephony. Some questions do not apply to all installations.

This guide contains a number of appendices that explain various aspects of IP networking directly

related to IP telephony functions. Refer to the Programming Operations Guide for specific

information about configuring the data portion of the Business Communications Manager.

This section includes the following checklists:

• “Network diagram” on page 31

• “Network devices” on page 32

• “Network assessment” on page 33

• “Resource assessment” on page 33

• “Keycodes” on page 34

• “System configuration for IP functions” on page 34

• “Finding the published IP address” on page 35

• “Media gateway parameters for IP service” on page 37

• “VoIP trunks” on page 39

• “IP telephone records” on page 40

Network diagram

To aid in installation, a Network Diagram provides a basic understanding of how the network is

configured. Before you install IP functionality, create a network diagram that captures all of the

information described in the following table. If you are configuring IP telephones but not voice

over IP (VoIP) trunks, you do not need to answer the last questions 1.d or 1.e.

Table 1 Network diagram prerequisites

Prerequisites Yes

1.a Has a network diagram been developed?

1.b Does the network diagram contain any routers, switches or bridges with corresponding

IP addresses and bandwidth values for WAN or LAN links?

Also refer to Appendix D, “Interoperability,” on page 175.

1.c Does the network diagram contain IP Addresses, netmasks, and network locations of all

Business Communications Managers?

1.d Answer this if your system will use IP trunks, otherwise, leave it blank: Does the network

diagram contain IP Addresses and netmasks of any other VoIP gateways that you need to

connect to?

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Avaya IP Telephony Guía de configuración Pagina 31