Avaya 4600 Series manual Initialization Process, Telephone to Network, Dhcp Server to Telephone

4600 Series IP Telephone LAN Administrator’s Guide

■IP Address of the TFTP server

■The subnet mask

■IP Address of the router

You should administer the LAN so that every IP Telephone can access a DHCP server with the above information.

The IP Telephone will not function without an IP address. The failure of a DHCP server at boot time will leave all the affected voice terminals unusable. (Although it is possible for the user to manually assign an IP address to an IP Telephone, when the DHCP server finally returns, the telephone will never look for a DHCP server unless the static IP data is unassigned manually. In addition, manual entry of IP data is an error-prone process.) It is therefore strongly recommended that a DHCP server be available when the IP Telephone reboots.

A minimum of two DHCP servers is recommended for reliability.

The TFTP server provides the 4600 Series IP Telephone with a script file and, if appropriate, new or updated application software (see Step 3, Telephone and TFTP Server under Initialization Process below). In addition, you can edit the script file to customize telephone parameters for your specific environment (see Administering Options for the 4600 Series IP Telephones in Chapter 4, Server Administration).

Initialization Process

The following is a high-level description of the information exchanged when the telephone is initializing and registering. This description, which assumes all equipment is properly administered ahead of time, may be helpful in explaining how the 4600 Series IP Telephones relate to the routers and servers in your network.

Step 1: Telephone to Network

The telephone is appropriately installed and powered, and after a short initialization process, the telephone identifies the LAN speed and sends a message out into the network, identifying itself and requesting further information. A router in the network receives this message, and relays it to the appropriate DHCP server.

Step 2: DHCP Server to Telephone

The DHCP server provides information to the telephone, as described in DHCP and TFTP Servers on page 2-7.Among other data passed to the telephone is the IP address of the TFTP server, which is crucial for the next step.

Initialization Process

2-8