astppbilling.org
ASTPP Open Source Billing Solution: Pal of Resellers
ASTPP is a comprehensive open source VoIP Billing solution. It is developed for FreeSWITCH based VoIP solutions. As per the statistics, it is in the list of the top 3 VoIP billing solution, including, open source and proprietary. It is the most user friendly, robust, scalable and secure system. It i