I am doing a review of a customers CUCM system and have found that the firmware that they are running on there 7975G IP phones has been deferred.
I noticed this on the download page where 8.4(1)_SR1 has been moved to the deferred releases section.
I have been trying to find out whhen it was deferred and for what reason but cannot find information on this. If anyone can point me to alink explaining this I would be most grateful.
If you click on the software to try and download it, it will give you the error.
It is : CSCsu93940
P phone fails to register to Windows Call Manager in mixed mode
Note: This firmware has been deferred due to the discovery that when upgrading to this firmware, and attempting to register the IP phones to a Windows based Call Manager operating in security mixed mode. The IP phones fail to register. If the Windows based Call Manager is converted to non-secure mode, the IP phones will register successfully.
This firmware deferral applies only to the following IP phone models :-
7906, 7911, 7931, 7941, 7942, 7945, 7961, 7962, 7965, 7970, 7971, 7975
One of the other fairly prominent bugs was this one: CSCsu61412