Quidway AR 18-33 routers are intelligent access routers developed by Huawei-3Com for medium/small-scale enterprises adopting xDSL or Ethernet access mode. They are integrated with Layer 2-switch module, safe and easy-to-use. They can not only serve as node devices at layer 3 of network in medical and tax affair fields, but also serve as uplink node devices of Internet cafes. Quidway AR 18-33 routers provide Ethernet interface, xDSL broadband interface, ISDN BRI S/T backup interface and Layer 2 switching function, satisfying different networking requirements. Moreover, they provide abundant access protocols, for example PPPOE and PPPOA. The interfaces of Quidway AR 18-33 routers comply with international specifications, which can be interconnected at different layers with products of different manufacturers, thus to protect the existing investment of users to the best degree. Minimize