I have been using the PC and the Internet form the very beginning. This is a great concept but it is totally unreliable.
The server software seems to be the problem. All incoming calls are subject to incorrect processing. Sometimes nothing happens, sometimes a beeping error occurs, sometimes voicemail works, and call forwarding quits working a few hours or a day after it is activated. It seems that there is no actual software support other than the people on chat, i.e.
nothing gets fixed.
Don't waste your money. I had to go back to ATT after spending a lot of time trying to work with this piece of ***.
Monetary Loss: $39.