Fusion PBX and a Billing System - VoIP developers with Freeswitch knowledge

We are customizing fusion pbx with a billing system together. This has been done successfully although untested. Now few things remaining on the project: 1. We want to add API for international mobile top up or mobile recharge - this will involve adding security and other things that can stop frauds from happening. We will present a guide to the successful developer. We also need reports for all recharges done to be incorporated to the system 2. Add SMS report to the softswitch to work with the existing report for voice [login to view URL] Look and Feel of the site as it is not looking good at the moment 4. Add API for DIDWW and DIDX to the existing DID management system.