Hello,I have problems with my Cisco IP Phone 7961... after a reboot the screen just displays the date and time. Also, the speaker button is turned green.I rebooted the phone a few times but does the same. There is no tone and does not receive calls.W...

Hi,I have problems with an IP PHONE 7641. All buttons are turned on, there is no dialtone and the screen is off. I tried to change it to other port but won't work.