Complete IPRN VoIP Switch Development

I need a turnkey IPRN/VoIP switch built by someone who has done it before in a live environment. The project covers the full stack—Carrier SIP interconnections, dynamic routing with LCR, real-time billing and CDR, multi-level (admin / reseller / client) panels, plus SMS and voice interconnect... (Budget: $250 - $750 USD, Jobs: Android, API Development, Asterisk PBX, Cloud Computing, Database Administration, Database Design, Linux, SIP, Telecommunications Engineering, VoIP)