A2billing is a product of star2billing.com. In a nutshell, A2billing is type of class 4 and class 5 softswitch comprising inline billing exclusively designed for residential and business purpose. Moreover, it is also used in wholesale VoIP services, calling cards and call-back. In addition, A2billing has a usage in telephone number resale.
Moreover, A2billing is absolutely free open source software exclusively designed for Asterisk. It has numerous benefits in providing effective telecom customer management including admin, agent, and customer along with online signup pages. This all comes with flexible inline rating, billing of calls and services in real time.