Using Obi 1110 with Google Voice and Panasonic DECT 6 phones. Basically all is working well but the volume at least on the receiving end is quite loud. Where and how can I lower it and what setting would you suggest. I've already lowered the phone volume as low as it will go but I still get an occasional echo effect and I think it's because of the volume. Also had a caller say I was breaking up badly at his end although he sounded fine to me. I don't know whether that's because of volume or because I was downloading a large file and so perhaps had a router problem. I use Cox internet at the 15mbps/4mbps level. Any possible settings for that problem?