New 7936 firmware; CME version compatibility ?

Answered Question

Hi all,

I'm planning on upgrading my 7936 conference phones' firmware to the latest version, 3.3(20). The download page notes that the compatible Call Manager versions are 4.1, 4.2, and 4.3.  I'm running Call Manager Express version 3.4(0). How do I know if the new conference phone firmware will be compatible with my CME?

Thank you,


  Joe

I have this problem too.
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Correct Answer by Aaron Harrison about 6 years 5 months ago

Hi

CME compatibility info is here : http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_device_support_tables_list.html

Basically click on a document that says 'Cisco Unified CME 8.0 Supported Firmware....' for your CME version; it then lists your 'supported/tested' firmware. Generally I would start with whatever is on this list for a given version of CME, and only upgrade if you have a particular problem or know of a common problem with that firmware.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/requirements/guide/cme34spc.html

Regards

Aaron

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Aaron Harrison Wed, 08/18/2010 - 23:57

Hi

The only way you would know is probably by testing it yourself - you are running a very old version of CME, which Cisco aren't going to test new firmware against...

Why not upgrade CME, along with all your firmware etc and get new features/functionality?

What are you trying to fix by upgrading the conference phone firmware?

Aaron

Please rate helpful posts...

True, the CME version is old. It's not actually my system, of course, but that of my client's. To them, I can justify a CME upgrade if I can show Cisco says that a certain CME version will work with the new phone firmware.

So basically the problem is, how do I know if any CME version will work with a given version of firmware? Does Cisco provide this support?

I'm trying to fix the following problem that is documented in the bug-base


CSCsj34558

Symptom:

A 7936 conference phone reboots randomly or experiences one way audio while on a call.

Conditions:

Unknown at this time.  Both issues appear to be related to DHCP renewal.

Workaround:

If the phone reboots on its own nothing can be done. If experiencing the one-way audio resetting the phone should clear the problem.

Further Problem Description:

The one-way audio problem is caused by the phone not resetting after a DHCP renewal where it gets a new IP address from the DHCP server rather than keeping the one it already had. The phone will stay registered with CallManager and use the old IP address for signalling, but will source RTP from the new IP address. This causes the one-way audio.

Correct Answer
Aaron Harrison Thu, 08/19/2010 - 02:12

Hi

CME compatibility info is here : http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_device_support_tables_list.html

Basically click on a document that says 'Cisco Unified CME 8.0 Supported Firmware....' for your CME version; it then lists your 'supported/tested' firmware. Generally I would start with whatever is on this list for a given version of CME, and only upgrade if you have a particular problem or know of a common problem with that firmware.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/requirements/guide/cme34spc.html

Regards

Aaron

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