User:Countyinfo

County Area Informatization(CAI) is important component part of the National Informatization, also it is the important means to promote the county economic development. County Area Informatization Network（CAIN） is the countyinfo(county information) technology infrastructure.

CAIN []is computer networks with broadband IP technology. Generally it can be classified three levels：the core layer, access layer and clustering layer. Unified IP address allocation, reliable access authentication and billing management, comprehensive network management and security management are integral parts in CAIN planning. Based on SDH, telecommunications Ethernet, ATM and other business networking platforms for the technical analysis, the paper explains CAIN Access layers such as LAN, XDSL, WLAN, NGN and Integrated Access suitable for the rural. In addition to providing access to individual users, commercial users internet with fiber optics and VPN technology is the key topic of CAIN[].

On the underlying network, CAIN is transforming from existing broadband business to next generation network evolution including gradually functional integration, a flat structure, centralized control, Business Development flexible.(from:http://www.countyinfo.cn)