Web based Call center programming

Web project for making a call center over internet. very preofessional design and easy to use. Control panel for web and call center manager. Cloud computing based and needs to be very good functioning with server. User evaluation service and connecting call center to PBX and connect agents to PBX over internet No VOIP. Just bid when you have experince and price will not change after getting info and just bid starting with word call. Please put logical price. Thanks for your bids