ASTPP is a carrier-grade, open-source VoIP billing and smart telephony platform built for telecom operators, carriers, ISPs, and VoIP businesses. It combines real-time billing and charging, CDR processing, invoicing, payment management, advanced call routing, and comprehensive reporting in a unified platform. ASTPP also supports Class 4 and Class 5 softswitch capabilities, multi-tenant IP PBX, DID management, calling cards, and SIP trunking. Available in Community and Enterprise editions, ASTPP provides flexible and scalable solutions for businesses with diverse telecom requirements. Its customizable architecture enables organizations to build, manage, and expand voice communication infrastructure while maintaining efficient billing, routing, customer management, and operational control. ASTPP is designed to support growing telecom environments with reliable features for both service providers and enterprise communication needs.