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The DHCP server provides the following information to the 4600 Series IP Telephone:
Administer the LAN so each IP telephone can access a DHCP server containing the IP Addresses and subnet mask listed.
The IP telephone cannot function without an IP Address. The failure of a DHCP server at boot time leaves all the affected voice terminals unusable. A user can manually assign an IP Address to an IP telephone. This can cause a problem when the DHCP server finally returns because the telephone never looks for a DHCP server unless the static IP data is unassigned manually. In addition, manual entry of IP data is an error-prone process. Avaya therefore strongly recommends that a DHCP server be available when the IP telephone reboots. If a DHCP server is not available at remote sites during WAN failures, the IP telephone is not available after a reboot.
A minimum of two DHCP servers are recommended for reliability. Avaya strongly recommends that a DHCP server be available at remote sites if WAN failures isolate IP telephones from the central site DHCP server(s).
The file server provides the 4600 Series IP Telephone with a script file and, if appropriate, new or updated application software. See Step 3: Telephone and File Server under Initialization Process. In addition, you can edit an associated settings file to customize telephone parameters for your specific environment. See Administering Options for the 4600 Series IP Telephones.
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