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Soundpoint IP 650 Phone Handset Microphone Deactivates

Carmen
Occasional Visitor

Soundpoint IP 650 Phone Handset Microphone Deactivates

Hello,

 

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.

 

What is the next step?

 

Thank you,

 

Carmen

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