dsweeny Sun, 05/10/2009 - 08:50

go to the CCM admin page > find/select your 7971 > at the "phone configuration page", go to the "Product Specific Configuration" section > look for parameter "Settings Access" and verify that you have it set to "Enabled".

Also is it working on "low-power mode"?

tallpaulroe Sun, 05/10/2009 - 23:56

settings access is enabled and i can access all other settings OK such as brightness and colour. it's just contrast that is "greyed"

not sure what you mean bye low power mode ?

i have the display switched off other than when an incomming call switches it on and the display timeout is set for 120 seconds.

Alex Bagaglio Thu, 06/04/2009 - 23:50


have you solved this issue?

We're having the same behavior on 7971/7970 with CUCM 7.0.2.

setting access is enabled

tallpaulroe Fri, 06/05/2009 - 00:14

one other point i have some on power cubes and some on POE and they all do it.

so i dont think it's a PSU issue

Alex Bagaglio Fri, 06/05/2009 - 03:03

I agree, I don't think it's a Power Issue

I've tried PoE with Cat4500 and


Also using the Power Cube didn't change anything.

I've tested this Issue with Firmware 8.5.2 and 8.3.4, however still no solution...


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