CounterPath X-Lite 4.6 for Windows User Guide - Manual (Page 9)

X-Lite for Windows User Guide
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2.4 Troubleshooting
X-Lite includes these tools for helping you troubleshoot problems:
• You can verify that your microphone, speakers and camera are working and can set the volume to a
comfortable level without having to actually place a phone call.
• While you are on a phone call, you can test the quality of the audio
See page 51.