I've worked days on trying to get Google Voice to work with this box. Nobody can understand me on my end of the conversation. I tried another GV account with the same results. Today, I setup CallCentric on my outgoing and it still is breaking up and choppy sounding. I even tried the QoS on my router. I know my network is fine because I had Comcast Voice for years and it worked great. Maybe 30 a month isn't so bad after all :-\
Maybe the OBi box is defective ???
Sorry, just very frustrated :(
Go to www.obihai.com and fill out a Support Ticket.