Avaya 555-233-128 Manuel D’Utilisation

2. Enter the password, ending with the # button. The 4601/4601+ provides LED and 

button-click feedback for each digit upon entry. To register the telephone without the 
extension or password (unnamed), press only the # button or make no entry and wait 60 
seconds.

Except for the 4601 and 4601+, the extension is visible as you enter it but the password 
displays as asterisks. The 4601/4601+ just provides LED and button-click feedback for 
password entry.

3. If entered, the system determines whether the extension is in use and if the password is 

valid.

4. Successful completion of this process produces the dial tone.

The IP telephone was installed successfully. 

!

Important:

We strongly recommend that you upgrade DEFINITY to the latest release rather 
than take the extreme steps in this section. There is no reason currently known to 
downgrade any Avaya IP Telephone except to install a 4612 or 4624 IP 
Telephone on a DEFINITY switch with a release prior to R9.5. 

CAUTION:

Never attempt to downgrade an Avaya 4630 IP Telephone with a release earlier 
than R1.8.

Create a TFTP server. Provide it with an IP Address (IP_tftp) on the same sub-net as the IP 
telephones you want to downgrade. Then:

1. Install the R1.1 software for DEFINITY Release 9 or R1.0 for DEFINITY Release 8.4 on the 

TFTP server.

2. Manually assign the IP Addresses for each 4612 or 4624, as indicated in 

on page 54 - including the FileSvr (IP_tftp).

3. Reboot the 4612 or 4624. The telephone downloads and installs the old boot code. This 

results in the manual addresses of the IP telephones being erased.

4. Manually assign the IP Addresses for each 4612 or 4624 including the FileSvr (IP_tftp).

5. Reboot the 4612 or 4624. The telephone will download and install the R1.1 or R1.0 release.

6. Manually assign the IP Addresses to each 4612 or 4624. Assign 0.0.0.0 for the FileSvr. This 

will prevent the telephones from upgrading until you are ready for them to upgrade.

7. Remove the old software from the TFTP server. Removing the old software prevents some 

other Avaya IP Telephone from inappropriately downgrading.