Networks

Hi, I have an broadband internet in africa. I need to become and IP telephone provider, by giving the people there a number in canada,Usa,or europe. I need a vendor who can provide me. I know you can buy skype number but I need another solution wich is like that, but not involved using computer and good quality. I have 512/388 satellite connection and would also like to know how many voip calls it could take simultaniously?

Thanks