If you use the Windows32 App and experience echo problems using the handsfree speaker phone of your notebook:

[nobody]

II just learned that changing the driver from the (recommended!) dell Driver to a generic High definition audio device solved all echo problems.
Before this using the handsfree audio on my dell notebooks was not possible, everyone complained about echo.
Now, after setting the driver to the generic High definition driver which Windows 10 supplies makes it possible to make calls using my notebook speakers and microphone only and nobody will complain regarding the quality of the call.

 

[NickD_3CX]

Good stuff!

Thanks for sharing this!