When I plug in a corded phone(any brand, I have several in the house),
there is a distinct ground loop hum. It's not very loud, but still annoys
me and the person I'm calling.
The ground loop hum is not there when I connect the Obi110 to a
cordeless phone, however.
I have tried to plug the Obi110 , the router, and corded phone in other
parts of the house, on different outlets, and even outdoors. Nothing
seems to be able to get rid of this problem
Thanks in advance for any suggestions!