VOIP Setup

We are interested in building and designing a dynamic database-driven prepaid/pinless calling card system and website. Customers will need to be able to fill a short form on line, pay via paypal or some other merchant, and have an option of a pin or pinless calling. There is an Asterisk server , (which is the calling card platform), and a2billing, the billing system , website has to integrate in some way with the billing system. This project needs to be completed within 4 weeks and delivered fully-functional in executable form, as well as complete connection to my termination endpoint. We need the following deliverables: 1. Install and configure a new Asterisk and A2billing server with at least 96 port concurrent ports capability. 2. Develop a billing website/customer maintenance integrated with the phone server. 3. Server needed to be bridged/connected with our termination partners. Platform: Asterisk and A2billing Server with integrated website for customer billing/pinless card maintenance. Deliverables: I need someone who can setup and installed a VOIP server/switch for a pinless calling card service. I need a coder who is expert on Astrix/A2billing software and server setup as well as create and connection to a customer account maintenance website with e-commers (paypal/[login to view URL] etc). We need the following deliverables: 1. Install and configure a new Asterisk and A2billing server with at least 96 port concurrent ports capability. 2. Develop a billing website/customer maintenance integrated with the phone server and A2biling. 3. Server needed to be bridged/connected with our termination partners.