Downgrading Avaya IP Telephones
Issue 2.2 April 2005 31
Downgrading Avaya IP Telephones!Important:
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:
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 Static Addressing
Installation on page 39 - 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.