I have noticed that Cisco has released a new version of the power cube, the CP-PWR-CUBE-4=. Is the CP-PWR-CUBE-4= power cube compatible with the 7900 and 6900 series phones?
No this power cube is for the new 8900/9900 phones, compatable with Communications Manager. The power tip is different size, won fit in other phones.
Thank you for giving me the answer to whether or not the CP-PWR-CUBE-4= will work on the 7900 series phones. I do know that the CP-PWR-CUBE-3= has replaced the CP-PWR-CUBE-2= and CP-PWR-CUBE=, and that a CP-PWR-CUBE-3= can be used on the phones supporting the CP-PWR-CUBE-2= and CP-PWR-CUBE=. However, the CP-PWR-CUBE-3= should always be used on newer 7900 series models, such as the 7945G, 7965G, 7975G.