ufortunately, magic jack decided to block conference call lines other than their own... they WERE the best deal out there, but i work with a company that does tons of conference call meetings and i'm unable to access them from my mj... bummer... i also can't seem to get 3-way calling to work for me... so i absolutely can not use it as my everything phone... you get what you pay for and for basic calling to most numbers, it works ok... i like it for traveling but i can't do my daily business on it due to the blocked calling... other real voip phones do not selectively block outgoing calls... i think mj is trying to get people to use their free conference calling service, but it's impractical to expect the world to only use theirs...