Our double room with a two-lane dual IP lines, with China Telecom, China Netcom backbone access, in the server room managed to achieve double-Telecom and China Netcom line access, so that both Telecom and China Netcom users can be a very fast connection to the server, Telecom and China Netcom to solve the problem of slow access speed to each other. This is to use the software to determine the visitor's line, to make the site a different turn with the URL, dual line access to automatic identification technology, through the use of the technology, customers are no longer resolve domain names to the IP, Telecom and China Netcom, just DNS resolution to add a record (for example: www.XXX.com), can be realized according to the website visitors use the network with a domain name (for example: www.XXX.com) were automatically resolve to the corresponding line operators IP, in order to obtain fast access speed. (Idc.jx163.com/sxdk.htm)