ASTPP is an Open Source Class 4/5 Softswitch built on FreeSWITCH. For many years, ASTPP has been empowering various VoIP businesses and service providers with its amazing open source VoIP solutions. It is regarded as one of the top VoIP billing solutions and the #1 open source FreeSWITCH-driven Class 4/5 Softswitch Platform, which automates invoicing and billing processes completely. ASTPP is one of few solutions that support the N-level reseller structure. It uses cutting edge technologies like FreeSWITCH and OpenSIPs as core technologies to provide the most robust, reliable, and scalable solutions. ASTPP is a smart telephony platform, which has a suite of smart VoIP telephony solutions to offer to service providers and businesses, including, but not limited to: ASTPP has a team of versatile VoIP consultants and developers that provides various services in different VoIP technologies: ASTPP is a one stop VoIP solution for ITSPs, MVNOs, VoIP service providers, wholesale providers, and any other business.