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30 Chapter 2 Prerequisites checklist

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Network devices

The following table contains questions about devices on the network such as firewalls, NAT

devices, and DHCP servers.

• If the network uses public IP addresses, complete 2.d.

• If the network uses private IP addresses, complete 2.e. to 2.f.

Network assessment

The following table questions are meant to ensure that the network is capable of handling IP

telephony, and that existing network services are not adversely affected.

Table 2 Network device checklist

Prerequisites Yes No

2.a Is the network using DHCP?

2.b If so, are you using the DHCP server on the Business Communications Manager?

2.c Is the network using private IP addresses?

2.d Are there enough public IP addresses to accommodate all IP telephones and the Business

Communications Manager?

2.e Does the system have a firewall/NAT device, or will the Business Communications

Manager be used as a firewall/NAT device?

NOTE: NetVision handsets do not work on a network that has NAT between the handset

and the system.

2.f If the Business Communications Manager is to be used as a firewall/NAT device, do the

firewall rules fit within the 32 input rules and 32 output rules that the Business

Communications Manager provides?

2.g A hub-based core will not have suitable performance for IP Telephony. Does the network

use a non-hub solution at its core?

Table 3 Network assessment

Prerequisites Yes No

3.a Has a network assessment been completed?

3.b Has the number of switch/hub ports available and used in the LAN infrastructure been

calculated?

3.c Does the switch use VLANs? If so, get the VLAN port number and ID.

3.d Have the used and available IP addresses for each LAN segment been calculated?

3.e Has DHCP usage and location been recorded?

3.f Has the speed and configuration of the LAN been calculated?

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Avaya IP Telephony Guía de configuración Pagina 30