CM 4.01 with 9620L 3.1

[rsnari]

Can somebody tell me if the 9620L IP Phone with version h323 version 3.1 is compatible with CM 4.01? I'm guessing not since it won't connect to the call server.

Is there a way to downgrade the phone? We have 9620C phones, and had to order some additional phones. We got a box of 9620Ls loaded with the new version.

Thanks for any input.

[rvengco]

For Avaya one-X® Deskphone H.323 3.1.5 Software for the 9610, 9620L, 9620C, 9630G, 9640, 9640G, 9650, 9650C and 9670G IP Deskphones
Avaya Aura® Communication Manager (CM) Compatability:
Avaya one-X® Deskphone H.323 Release 3.1.5 is supported on Avaya Aura Communication Manager 5.2.1 and higher. We recommend using the latest Communication Manager release with 9600 IP telephones. See the "Communication Manager Software & Firmware Compatibility Matrix" at support.avaya.com for the supported software/firmware versions of the Media Server, Media Gateway, and circuit packs.
For details on compatability and configuration with different Communication Manager releases, please refer to the Readme file.

Here is the link for the readme for 3.1.5

https://downloads.avaya.com/css/P8/documents/100164663

For 9600 Series IP Telephone H.323 Software Release 3.1 Service Pack 3 for the 9610, 9620L, 9620C, 9630G, 9640, 9640G, 9650, 9650C and 9670G IP Deskphones
Avaya Aura® Communication Manager (CM) Compatability:
Although the 9600 IP Deskphones are supported on Communication Manager 3.1 and higher, we recommend using the latest Communication Manager release with 9600 IP telephones. See the "Communication Manager Software & Firmware Compatibility Matrix" at support.avaya.com for the supported software/firmware versions of the Media Server, Media Gateway, and circuit packs.
For details on compatability and configuration with different Communication Manager releases, please refer to the Readme file.

Here is the link for the readme for 3.1 SP3

https://downloads.avaya.com/css/P8/documents/100151332