Voice over IP Phone Number Coding Project

I am looking for someone to code a website page that would allow someone to purchase a local telephone number that can be call forwarded to whatever number that they want to use. It's sort of like Google Voice, but I am going to be packaging it with my executive suites and virtual offices business. The ideal client is someone who wants to have a local address and a local telephone number and be able to purchase it dynamically with a back office to be able to log in and forward the number. The company that I want to use is this one: <[login to view URL]> [[login to view URL] If][1] you look around the site and see some of the companies using this platform and can think of some other value added products that we can come up with together that might be sellable, then let me know. Thanks, David