A2Billing Overview

A2Billing: A Telco in a Box

A2Billing Overview with Sip Proxy

A2Billing, combined with Asterisk is a physical Telecom Platform and Soft-Switch providing a wide range of telecoms services using  both traditional telephone technology or VoIP. It contains a real time billing engine which rates and bills and invoices calls, and contains a payment gateway.

This now gives any Telecom company a very good reason to consider the A2Billing Platform over the traditional offerings for TDM and VoIP Soft-Switches as well as wholesale billing.

Most Star2Billing software and applications are free, that is to say that the software is free of charge, but also free as in you have the freedom to modify the software under the terms of the AGPL. We simply make a charge for installation, training and consultancy.

A2Billing can be used in a number of different roles, and our consultancy services can advise on the appropriate hardware and configuration of your Switch. For a list of products that A2Billing can provide, please browse through our solutions.

Star2Billing products

Star2Billing creates products to provide solutions by blending A2Billing with “best of breed” (usually) Open Source projects, to provide a well rounded solution.

Our products include, but are not limited to:

  • Calling Card service with either PIN or Caller ID recognition
  • Call-back service
  • VoIP termination for IP PBX systems
  • Wholesale VoIP Termination and Origination
  • Residential VoIP Termination and Origination
  • Special Applications Platform
For more details on the types of products and solutions that A2Billing can provide, please browse through The Solutions pages.

Main Features


  • Different billing options, including straight per second billing through to free minutes, and free calls, stepped billing and subscriptions,
  • Documented Admin interface for complete management of customers and products.
  • DID Billing, provisioning, and delivery.
  • Voucher Creation for Pre paid card topups.


  • Detailed CDR including buy and sell rates, margin and markup
  • Carrier reconciliation reports.
  • Profit and Loss reports.
  • Customer activity.


  • Simple to use web interface for resellers and agents to add, manage and control their own customers.
  • Create links from reseller websites to A2Billing so that customers are automatically assigned to the agent, and commissions correctly paid.
  • Reports and statistics for agents and resellers.


  • Customer portal with access to online payment options
  • DID purchasing
  • Call forwarding
  • Online invoices.
  • Call data records
  • Rate simulator.


The list above is only a partial list of the functions and features of A2Billing. For a detailed overview of the individual products that A2Billing can provide, please browse through the solutions pages. Alternatively to ask specific questions or to place an order, please contact us.