A2Billing - WHMCS Integration

We need a script to do the following: - Generate monthly invoices in WHMCS based on information generated from A2Billing - Allow access to call logs from within WHMCS (probably by importing the logs with a daily cron job). Chosen candidate must have prior experience with both WHMCS and A2Billing, and submit an NDA prior to approval. Code must be clearly documented, and must be coded with security in mind. Script must include error handling with automated email notifications if importing fails, for whatever reason. We will provide access to existing A2Billing and WHMCS system. Final deliverables will include: - one (or several) working import scripts to perform needed tasks - complete and verifiable test cases so that the script can be confirmed to be working - Format documentation, documenting both script usage, configuration and installation