The recommendation for SIP telephone installation is to use DHCP, especially if a large number of phones are being installed. Using DHCP simplifies both the installation and maintenance.
If the IP Office system is to be used as a DHCP server for the network, use the following processes to check and configure the system's DHCP settings.
If a separate DHCP server is used by the customer's network, that DHCP server needs to be configured to support DHCP requests from IP phones, see Alternate DHCP server setup.
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.
Other:
Enabling an additional DHCP server in a network can cause connection issues for all devices on the network. Ensure that you and the customer's network administrator all agree upon the correct choice of DHCP server options.
