Version compatibility of 7940 phones.

[imrannmdc]

I have two call managers on two different sites.

Call Manager A is: Version 4.0(2)

Call Manager B is: Version 4.1(0)

My issue is:

I  have two 7940 phones which work well with the Call  Manager A but they do not work with Call Manager B on a  different site.

Both call managers show the entry "load 7960-7940 P0030702T023" in the command output when I run "sh telephony-service" command.

Could it be due to the version difference on both call managers?

Which firmware version of 7940 is required to work with Call Manager version 4.1(0)?

Unfortunately, I don't know the firmware version info of 7940 with me at the moment.

Thanks.

[lavanyaps]

Hi

Cisco IP Phone 7940  sccp firmware release 8.1(2) is compatible with CM Version 4.1(0). 

Check the link for reference & download.

Thanks. Pl rate if you find the link useful...

http://tools.cisco.com/support/downloads/pub/ImageList.x?relVer=8.1(2)&mdfid=268437897&sftType=Skinny+Client+Control+Protocol+(SCCP)+Software&optPlat=&nodecount=4&edesignator=null&modelName=Cisco+Unified+IP+Phone+7940G&treeMdfId=278875240&modifmdfid=...

[paolo bevilacqua]

Please note, you have Communication Manager Express, not Call Manager.

You should update both systems. You are are loosing a lot of features by running old software.