VOS3000 is designed for small and medium scale carrier-class operations by Kunshi Network Technology Co., Ltd. In addition to providing Account Management,Rate Management, Package Management, Cards Management, Gateway Management, Phone Management, Softswitch Management, IVR Management, System Management, User Management, Data Query and Web Self-Service System, the system also integrates add-on modules like the Calling Card/Call Back Business System (support 6 million cards) and Extreme Media Proxy, for you to build a stable , reliable and high-performance operating system.