We had the same issue here. We nearly escpaded an serious hardware replacement procedure of 9 Stacks (with more then 4 Switches per Stack) which we updated for testing. We also commented the release and provided a link to this forum post. ... View more

Hello Everyone, I'd like to share our Solution for a very common problem when connecting wireless headsets (Jabra and Plantronics are both affected) via usb to any DX-Series Phone. Problem Description: After connecting the Headset to the Phone the headset seems to "randomly" off and on hook without any reason. What we found out is that the phone tries to send "touch sounds" and "screen lock sounds" via usb to the Headset. This behavior is nowhere documented by cisco, jabra or plantronics and ist very annoying from the user perspective. Solution: Go to: settings -> sounds -> disable "touch sounds" and "screen lock sounds". Maybe Cisco wants to enhance its documentation for connecting headsets to the dx-series. Our management nearly freaked out, because it took us hours to find a solution for the very annoying "clicking sound" of the plantronics headset. We are using CUCM 10.5.2 and DX Series Firmware 10.2(4).46 Kind regards, Vasco ... View more