panasonic link2cell echo
We have iPhone 8 plus and X. Just bought second Panasonic Link2cell phone system for our home. I setup bluetooth with no problem. When talking on the Panasonic the party I’m talking to hears an echo, this happens with both Panasonic systems. Is there a way to correct this, is there a different phone system that will no have the echo?
iPhone X, iOS 11.4.1