WiFi Disconnects during voice calls - how to fix this?

[BlueOrbit]

I noticed that my home WiFi disconnects for the duration of voice calls, then re-connects within 30 seconds after I hang up. Is anyone else experiencing this issue? Is there a way to keep WiFi connected during voice calls?

I thought that KitKat would fix this, but after updating to KitKat, I am still experiencing the same issue.

Thanks for any input on this...