The recommendation for H.323 phone installation is to use DHCP, especially if a large number of phones are being installed. Using DHCP simplifies both the installation and maintenance. There are a number of options around which server is used for the DHCP support for the H.323 phones:

• If the IP Office system is to be used as a DHCP server for the network, use the processes below to check and configure the system's DHCP settings.

• If a separate DHCP server is used by the customer's network, that DHCP server may need to be configured to support DHCP requests from IP phones

• The IP Office can be configured to only provide DHCP support for Avaya phones. That option can be used to allow it to be used in conjunction with a separate customer DHCP server. This removes the need to configure the customer's DHCP server for IP phone support.