Downgrading Avaya Ip Telephones (H.323 Only); Converting Software On Avaya 4600 Series Ip Telephones - Avaya 4601 Installation Manual

Downgrading Avaya IP Telephones (H.323 Only)

!
Important:
We strongly recommend that you upgrade DEFINITY to the latest release rather
Important:
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
CAUTION:
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
Installation
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.

Converting Software on Avaya 4600 Series IP Telephones

The 4610SW, 4620SW, and 4621SW IP Telephones use either H.323 or SIP software. These
telephones come from the factory with H.323 software loaded by default. This section describes
how to convert from H.323 to SIP software, or from SIP to H.323 software.
There are several H.323 to SIP or SIP to H.323 conversion scenarios, and each scenario
depends on whether the majority of your telephones are H.323 or SIP:
H.323-Centric - an environment where the majority of IP telephones are and will remain
●
running H.323 software, but some telephones will become SIP IP telephones. In an
H.323-centric environment, the 46xxH323... software bundle must reside on the HTTP
on page 43 - including the FileSvr (IP_tftp).
Downgrading Avaya IP Telephones (H.323 Only)
Static Addressing
Issue 3 April 2006 33