Dial pad missing, Black screen in Teams calls
Hello, on our 'Poly Trio 8500' telephone system (Firmware version 7.0.3 installed, runing Microsot Teams) is the dial pad missing, so we can not dial a number to call someone in Microsoft Teams. On the same telephone system if we call someone for example intern with Microsoft Teams, sometimes the screen turns black and the telephone doesn't do anything anymore. So we have to restart the telephone. Please contact us as soon as possible. Thank you.