Adjust listening/speaking volumes in the softphone
application.
The sound is distorted or I hear
an echo in the headset.
Reduce speaking and/or listening volume on the computer
using your softphone application.
Point microphone towards chin.
If the distortion is still present, lower the volume on the inline
controller.
No audio connection to PC.
Unplug USB cable from switcher and then reconnect the
cable. Quit and then restart your PC audio or softphone
application.
I can no longer hear any audio
through my PC Speakers.
For Windows XP systems
• Refer to the "Audio" tab of the "Sounds and Audio Devices"
option in your PC Control Panel
• Under "Sound Playback", change the default setting to the PC
speakers. Click "OK" to confirm your change.
For Windows Vista and Windows 7 systems
• Refer to the "Sound" option in your PC Control Panel.
• Under the "Playback' tab, change the default settings to your
PC speaker. Click "OK" to confirm your change.
For Mac OS
• Chose Apple menu > System Preferences and click Sound.
• Click output, and then select "Internal Speakers" or your
speaker choice.
My MDA disappeared from the
Hub interface.
If you are using Windows 8 or above you will not see the
MDA in Hub. Use the MDA wall power plug to update your
firmware.
My MDA died after I attempted
to download the updates using
DFU.
If you are using Windows 8 or above, plug a wall power
adapter into the MDA220 USB and then proceed to update
your firmware via our Poly software.
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