The ZXV10 W901 V2 is an Access Controller (AC) designed for government & business users. It is an embedded portal server with a strong ability for WLAN access control & user authentication. Other features are also achieved by the AC, such as, Plug & Play, compact design, high reliability, rich service types, high accuracy & flexible billing, fine user control management, sound RF management, high security, fast roaming, etc. It can be widely used in the WLAN access for government, enterprises, hotels, public hotspots, & other scenarios. The ZXV10 W901 V2 supports many access modes including fixed-physical-location-based access, user-MAC-address-based access, port-based access, IP-address-based access, VLAN-based access & session-binding access. Users accessed by ATM, CABLE & ADSL can be supported by Ethernet bridging. The ZXV10 W901 V2 provides management for network devices including resource configuration, fault management, performance monitoring, security management, & billing management. The ZXV10 W901 V2 supports various user interfaces, Telnet, Console, two physical management interfaces namely ETHERNET & SERIAL, various command settings & friendly GUI. All these features make device management more convenient & effective. The ZXV10 W901 V2 traffic management allows rate limiting based on each user, policing rate limiting & management based on service levels. It also provides flow forecasting in order to manage networks better. The ZXV10 W901 V2 uses a dedicated network processor chip to achieve parallel processing of multiple forwarding engines, Layer 2 encapsulation processing of IP packets, as well as Layer 3 source address routing, destination address routing, PPP session route forwarding, etc. It has high data processing & route forwarding capability, enabling end users to obtain good experience. The ZXV10 W901 V2 supports RADIUS-based authentication, accounting & administration. The billing models include: online duration, data traffic, DHCP, fixed physical address (port, VLANs, the MAC or IP binding). The Internet users can be charged byonline duration or traffic. The ZXV10 W901 V2 supports the backup accounting server, reconciliation accounting server, realtime accounting & large traffic accounting.