## Dynamic Addressing Process

NOTE: Before starting this process you must have an extension number for the IP telephone and the Avaya Communication Manager security code (password) for that extension, unless the telephone will use unnamed registration. For more information, see Unnamed Registration.
Any reference to the HTTP server applies equally to an HTTPS server.

The following description of the process of installing the IP telephones assumes that the process is executed successfully. Only an initial out of the box installation is described. For errors that might be encountered during the process and the messages displayed, see
Chapter 5: Troubleshooting Guidelines.

When you plug the IP telephone set into the Ethernet wall jack and apply power, if applicable, the following process takes place.

NOTE: If the application has already been downloaded, the whole process takes approximately 1 to 2 minutes after the telephone is plugged in. For software upgrades, including the boot file and application file download, the process might take 5 - 10 minutes. The duration is based on LAN loading, how many telephones are being installed at once, and similar factors.
Do not unplug the power cord during the download process.

1. The telephone activates the Ethernet line interface, the PC Ethernet jack, and dial pad input
   to allow the invocation of procedures. The activation occurs as soon as possible after power-up or a reset.

The telephone detects and displays the speed of the Ethernet interface in Mbps, that is,
10 or 100. The message No Ethernet displays until the software determines whether the interface is 10 Mbps or 100 Mbps.

NOTE: The Ethernet speed indicated is the LAN interface speed for both the telephone and any attached PC.

1. The IP telephone sends a request to the DHCP server and invokes the DHCP process.

One of the following messages display:

DHCP: s secs # to program |  | DHCP: s secs VLAN ID = n |  | DHCP: s secs

where s is the number of seconds that have elapsed since DHCP was invoked. The message on the left appears if 802.1Q tagging is off and access to local programming procedures is not disabled or restricted. (See Chapter 3: Local Administrative Options for specifics.) The middle message appears if 802.1Q tagging is on and access to local programming procedures is disabled or restricted. If the left and middle messages alternate every two seconds, 802.1Q tagging is on. When both messages alternate, access to local programming procedures is not disabled or restricted. Finally, the message on the right appears if 802.1Q tagging is off and access to local programming procedures is disabled or restricted.

1. The DHCP server provides IP addresses for the following hardware:

- The IP telephone
- The HTTP/HTTPS server
- The TN799B, C, or D Control-LAN (CLAN) circuit pack on the media server

2. Using the list of gateway IP addresses provided by the DHCP server, the telephone performs a router check. The telephone cycles through the gateway IP addresses with ARPs or pings until it receives a response. When the router is located, the HTTP process starts.
3. While the IP telephone connects to the HTTP server, the telephone displays the following message:

HTTP:n ipadd

where n is the number of the IP address obtained from the HTTP server and ipadd is the IP address.

1. When connected, the telephone looks for an upgrade script file.
2. The HTTP server sends and identifies an upgrade script.

The GET message might have to be sent several times. Each time the GET message is sent, all IP telephones display one of the following messages:

HTTP: n uri

For HTTP, n is the number of HTTP requests made by the telephone and uri is the URI for the current HTTP request.

1. While the upgrade script file is being downloaded, all IP telephones display the following message:

HTTP:n sc etag

where n is the number of the IP address obtained from the HTTP server, sc is the status code of the HTTP response and etag is the value of the ETag header.

1. While the application file is saved in flash memory, all IP telephones display the following message:

Saving to flash 1%, 1 secs

with the percentage of the file and the number of elapsed seconds incremented as the application file is stored in flash memory.

1. The telephone contacts the Avaya Media Server and attempts to log in.

All IP telephones display the following prompts for an extension:

Login
Enter Extension
Enter Extension and press Enter or OK

1. Enter a new extension and press OK. To register the telephone without the extension or password (unnamed), press only OK or make no entry and wait 60 seconds.

NOTE: Unnamed registration is the capability to register a telephone with the call server without entry of an extension or password. The UNNAMEDSTAT parameter must be set to enable unnamed registration. Telephones registered unnamed have limited functionality. For more information, see Unnamed Registration.

All IP telephones display the following prompt for a password:

Login
Enter Password
Enter Password and press Enter or OK

1. Enter the password and press OK. To register the telephone without the extension or password (unnamed), press OK or make no entry and wait 60 seconds.
2. The extension is visible as you enter it but the password displays as asterisks. The system determines whether the extension is in use.
3. Successful completion of this process produces the dial tone.

The IP telephone was installed successfully.