([Program attributes] The price is cheap, maintenance and management does not require too much professional technology, the environmental adaptability is strong, and the long-term operation performance is stable and reliable. 1. 450-100 Users Small and Medium Internet Cafe Solution For the range of 50-100 users, Huawei 3Com proposes the following solutions: Router: AR18-20/AR18-30 broadband access router, using high-speed PowerPC micro-manager, using Huawei 3COM Enterprise's network operating system platform - VRP, it provides Chinese help interface, easy to configure. Among them, the upstream WAN port of AR18-20 is 10M broadband Ethernet, which can be connected to the Internet through a photoelectric converter, and the downstream 4 10/100M adaptive LAN ports can be connected to the Internet cafe aggregation switch through Ethernet twisted pair. The difference between AR18-30 The upstream port is ADSL, the upstream rate is 800K, and the downstream rate is 8M.)