this service is mainly going to be used by my parents. i dont mind if the installation is complex but using it should be very simple.i dont mind proprietory stuff... it should only be cheap, reliable & good quality.skype is offering me unltd calling for less than $ 5 / monthvonage has plans starting at $ 10 / monthplease suggest any alternatives (now i will specify my requirements clearly)1. can be used without PC (no USB adaptors)2. need a US no. so my family & friends in US can call on that no. for cheap/free3. cheap cost (< $ 5/month)4. lower initial installation costs (only disadvantage in skype currently, standalone skype phones cost starts around rs. 3500-4000)