jjsole, I just used it a few hours ago to call my roomate's cellphone while he was waiting for the call upstairs. Like you said, the quality was excpetional, but we kept cutting each other off due to some serious delay. I havnt changed any settings at all and our internet speeds are excellent according to dslreports. Could it be a router setting? Also, I looked everywhere to check if there was a way I could receive calls from other phones at no avail. Skype, in contrast, advertises this feature right on their front page, so I am gonna give them a try instead.