Dear ADSL Internet cafe customers:
Thank you for your use of telecommunications companies to provide the ADSL (super Enquiry Line) Internet access business. Currently, you are way to describe the Internet through ADSL line local area network to share access to the Internet, here would like system maintenance and troubleshooting simple inductive approach, hoping to help you.
First, Internet cafes to maintain the premise that computer, hub (Hub) or switch, network card, cable and other hardware quality and reliable; Internet cafes must be equipped with specialized technical personnel, not on duty must also be on call.
2, LAN networking mode
Large number of facts show that the Internet cafe and a considerable portion of failure is due to local area network to share technical manner incompatible with ADSL caused, and often peak in the Internet, data traffic when more performance out to the Internet cafe business is significantly affected.
Internet cafes are usually network through a proxy server (host) to share Internet access, specific software and hardware installation and configuration of a variety of ways, can not describe it; but we recommend using a dual NIC host (preferably not the same two network cards), or ADSL and not connected to the terminal and the host is connected with the Hub; proxy server software for the system to pay attention and * (recommended Windows2000) co. Host is the core of the LAN, as far as possible in high-end hardware configuration; in addition to other technical personnel to debug, do not directly use the host computer.
LAN Internet cafes are many uncertain factors, even more familiar with the computer network of people also may experience various difficult Wen Ti, so we recommend Internet cafes and more Xuexi technical staff, more hands-on, to improve maintenance Shui Ping Zhu Bu.
Third, judgments and treatment failure
ADSL Internet access failure is nothing more than central office (Telecom) failure and the client (Internet cafes) failure of two, less central office failure. We suggest that the Internet cafes found in failure, according to the following procedures:
1. Make sure all computers (including the master server) really are not online;
2. View the ADSL line terminal on the light is consistent with the normal; If not, remove the access to outside dial tone telephone to listen to whether, if there is no sound explanation outside off, please call 112 declaration line barriers;
3. See ADSL LAN terminal on the bright lights are long; if not light, check the connection to the host adapter cable is properly connected;
4. Check the host IP address, subnet mask, gateway, DNS and other network configuration is correct;
5. To re-open relations ADSL terminal;
6. Restart host;
7. To the LAN with the host disconnected, leaving only the host to the ADSL terminal connection (to see it because the LAN network port congestion caused by excessive flow); disconnect method is to disconnect the host on the internal network card and disable the cable card (through Windows "Device Manager"). Another piece of card and then re-enable the disabled a while, or restart the host, if the host can access, but the failure to re-appear after the LAN connection, indicating a problem with LAN, need remediation;
8. Also, note that Internet cafes are using the power of the regulator problem, if the power supply voltage fluctuation range is too large, beyond the ADSL Modem is to scope, will result in frequent dropped calls. Internet cafes should be recommended by regulators to ensure voltage stability. (General ADSL Modem can adapt to the voltage range between 200 ~ 240 volts). Especially in summer, air-conditioning use caused by voltage instability, we must pay attention to.
9. If the above problems were not resolved, indicating the fault is not a client, please contact the online customer service center 163 declaration, we will immediately.
It must be explained, ADSL broadband access to the line requirement is relatively high. Therefore, the distance telecommunications company ADSL nodes will certainly be closer to the stability of a number of sites, Internet speed is also faster; in some places as far apart, line attenuation and interference more serious, the Internet is difficult to achieve the desired effect; and, ADSL line required line Do not greater than 800 ohm loop resistance, insulation and wire to wire insulation should be greater than 100 megohms; the ADSL line into the room this section should not be used with computers or air conditioning power line together, separated by at least more than 15CM. In addition, although ADSL allows simultaneous phone calls, but we recommend ADSL line Internet cafes do not call as much as possible, preferably not connected separator and telephone, to eliminate these transient noise on the line of.