Soundpoint IP 650 Phone Handset Microphone Deactivates
I have an IP 650 phone. All at once the handset microphone stopped working. You can hear the other party on the phone, but they cannot hear you. I traded the handset with another working handset and it seemed to work for several months. Yesterday, we tried to use the phone and the same symptom appeared. Can a phone base cause the handset microphone to not work on 2 different handsets?
The microphone mute is not depressed on the phone. I tried to run a hardware diagnostic, but it was inconclusive.