Configure LAN Settings

Typically, IP phones can be configured using one of the following three options:

  • Automatically using DHCP (the DHCP Server assigns the IP address, provides information about LAN settings as well as information about a host system from which the phones retrieve their configuration)
  • Semi-automatically using DHCP (the DHCP Server assigns the IP address and provides information about LAN settings, remaining configuration is done manually)
  • Manually (all configuration is entered manually)


The simplest way to configure LAN settings on IP phones is to use DHCP. Phones can use information from the DHCP Server to configure its IP address and DNS address, the subnet mask, the default gateway and IP addresses of the primary and secondary DNS server.

If DHCP is available on your network, configure the phone to use DHCP for its configuration. If your DHCP server is configured with Option 66 (information about the provisioning server used on your network), configure the phone to use the fully automatic configuration using DHCP (refer to your phone documentation for information how to enable this option). If your DHCP server does not use Option 66 and you have a provisioning server, you'll have to configure the information about the provisioning server manually.

If DHCP is not available, you must configure the following network configuration parameters on each of your phones:

  • IP address
  • Subnet mask
  • Default gateway
  • Primary DNS
  • Secondary DNS