We are looking for a A2Billing Installation on our existing Trixbox installation with special customization as follows:
DID "X" = Top up DID. High rate cost to caller.
DID "X" automatically creates a new account for a new caller based on their CLI and tops up their account with "X" amount of units and applies Ratesheet "X" to the account.
DID "X" tops up existing customers accounts with "X" amount of units each time they call DID "X".
Each unique Top up DID relates to specific Service and Ratesheet.
A global local rate inbound access DID is available for use to all different services.