When the polycom is rebooted the microphone goes through diagnosis no problem, we have moved the microphone to an alternate unit and we have no problems unmuting and muting. We have rebooted the unit, the mcu, and the hard drive and no change. we suspect a faulty port on the rear of the camera or the microphone.
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Solution for Skype 5.0:
In the upper right of the window during a Skype call, there should be an icon of a microphone with a slash through it. When it is highlighted in red, this means that your microphone is muted. Make sure the icon is white to be unmuted (pictures below).
Another problem could be which microphone you have selected in your Preferences. Go to Skype->Preferences... and click on the Audio/Video tab. There should be a drop down menu labeled "Microphone:"; make sure the correct microphone is chosen.
Look at the box labelled SOUND RECORDING - if the DEFAULT DEVICE is listed as WAVE DEVICE (may have some letters and or numbers in front of the words WAVE DEVICE - they are only the name of the device) go to step 6 otherwise click the little downward arrow at the right hand end of the DEFAULT DEVICE box. Scroll down the pop-up list to WAVE DEVICE and click on it.
click VOLUME in the SOUND RECORDING box
A window will open entitled 'Recording Control'
Put a tick (check-mark) in the little white box under the heading of MICROPHONE and make sure the Volume slider is at the top of the scale.
Close the window to go back to the Sounds and Audio Devices Properties Window.
If you also want to hear what you are saying into the microphone over your own loud-speakers / headphones click on the VOLUME button in the SOUND PLAYBACK box.
A VOLUME CONTROL window will open. If MICROPHONE is in the list of sound sources go to step 11 otherwise click OPTION on the tool-bar at the top right of the VOLUME CONTROL window. Then click PROPERTIES. With a little green dot in the PLAYBACK box look where it says 'Show the following volume controls' - place a check-mark against microphone and then click OK
In the VOLUME CONTROL window remove any check-mark from the MUTE box under the MICROPHONE heading and also make sure that the MUTE ALL box (bottom left) is also un-checked.
Close the VOLUME CONTROL window. Press OK to close the Sounds and Audio Devices window and exit CONTROL PANEL
That should be it but if you are using MSN Messenger / Skype or other similar program you will need to start that program and click on the TOOLS button followed by SOUNDS and TEST AUDIO - follow screen prompts thereafter.
you have to goto your control panel click start button at the taskbar of your PC then click control panel you will see settings, hardware for your PC locate the REALTEK HD SOUND EFFECT MANAGER...after that now youre in the settings for your audio click the microphone button there you'll see its muted or no voll at all uncheck it the silde to its higher vol for your mic and thats it...your mic is already unmuted
by default the playback of your voice is muted. next to your clock theres the sound speaker icon click on it, you should see microphone somewhere there, if you dont press settings from the toolbar and then properties
then on the playback make sure there is a X on microphone.
then click ok, now check is the microphone muted? unmute it and speak to the microphone you should hear your own voice played back instantly from the speakers.