Hello all and pardon the naive question. I'm looking to start my own small town based ITSP (mini vonage) with approximately 2,000 concurrencies. What I'd like to know is, do I or don't I need a session border controller to get this working. I was told I don't need any hardware and I could get this up and running with software only. I don't know how true this is therefore I decided to ask the experts. Furthermore, would a large provider be willing to trunk my connection if it is software only? What do you fancy? If you had to guess a cost to get something like this up and running, would it be under $50,000.00 I don't have much money to work with at the moment and I'm looking for someone with more experience might do. I'm guessing I could get it all running without an SBC and without heavy hardware or am I wrong because of DSP encoding and the likes. Any pointers would be greatly appreciated.