Detailed analysis of common ADSL Modem disconnection Phenomena

I believe that all users using the ADSL Access Network have experienced ADSL Modem disconnection. The following describes the solutions to these disconnection problems. If the domicile is too far away from the Telecommunications Bureau (more than 5 kilometers), you can report to the telecommunications department. Ensure that the line connection is correct (the connection methods for different voice splitters are different. Please follow the instructions to connect correctly ).

At the same time, ensure that the communication quality of the line is good and there is no interference with other devices that may cause line interference, such as telephone extensions and fax machines. Check whether there is poor contact between the junction box and the crystal head, and whether there is any link with other wires. It is best to use standard telephone lines if conditions are met. It is better to use twisted pair cables of category 3, Category 5 or category 5 of ITU standards. The telephone lines are separated after they are entered. The first line is telephone and the first line is computer. If you want to install a telephone extension in your room, you 'd better select a good distribution box. Note: Do not place the mobile phone next to the ADSL Modem, because the mobile phone will automatically find the network every few minutes, and the strong electromagnetic interference is enough to cause the ADSL Modem to be disconnected.

Knowledge about Nic purchasing

Check your network card. If it is an ISA network card, you 'd better switch to PCI and select a good quality network card. A poor network card may be the cause of the problem. 10 M or 10 M/M Adaptive Nic. In addition, it is also worth noting that dual NICs cause conflicts. In this case, you should unplug the network adapters connected to the LAN or other computers and use only the network adapters connected to ADSL for Internet access testing. If the fault returns to normal, check whether two NICs conflict with each other.

Incorrect ADSL Modem or Nic settings

The most common problem is that the IP address of the ADSL Modem is set incorrectly or the DNS server is set incorrectly. Because the user of ADSL virtual dialing does not need to set an IP address, it can be automatically allocated. Generally, TCP/IP gateways do not need to be set. In addition, make sure to set DNS correctly. If the operating system is Windows 9x, enter Winipcfg in the DOS window to get the DNS address, and enter ipconfig/renew in Windows 2000/XP, or ask the local telecommunications department. In addition, the TCP/IP settings are the most likely to cause the inability to browse the Web page. For example, if you have not changed the settings, you can always browse normally and suddenly find that the browsing is abnormal, you can try to delete the TCP/IP protocol and then add the TCP/IP protocol again.

An error occurred while synchronizing the ADSL Modem.

Check whether your telephone line is not in good contact with the ADSL connection, or the telephone line is faulty. If you suspect that the splitter is bad or the ADSL Modem is bad, try to directly connect the external line to the ADSL Modem without using the splitter. If it is determined that there is no problem with the separator, ensure that the connection between the separator and ADSL Modem should not be too long. If it is too long, it is very difficult to synchronize. If the above conditions are excluded, you only need to restart the ADSL Modem to solve the synchronization problem.

Operating system defects

Some operating systems may have compatibility problems with components related to ADSL. Taking Windows 98 as an example, there are major defects in its network components, and there will be inexplicable ADSL Modem disconnection problems during network connection. In this case, the best solution is to patch the system. You can directly connect to Microsoft's official website and select the patch downloaded from the system. After the patch is installed, install the virtual dialing software.

Major patches include: Windows 98 SE patch, Windows 98 dial-up network 1.3 upgrade 1.4 patch, Windows 95 was used at that time WinPoET, for software such as RasPPPoE that relies on the dial-up network of the operating system, first install "Microsoft dial-up network 1.3" to work normally and Microsoft dial-up network MSDUN1.4.

Dial-Up software interference

There are two ways for ADSL to access the Internet: virtual dial-up and leased line access. Currently, most of the personal user's ADSL uses the former. However, PPPOE (Point-to-Point Protocol over Ethernet Point-to-Point Protocol) has its own advantages and disadvantages. After tests on different operating systems, if the operating system is Windows XP, we recommend that you use the PPPOE dial-up software. The ADSL Modem is less disconnected, and the stability is also relatively improved. If you are using Windows ME or 9x, you can use the following types of virtual dialing software: EnterNet, WinPoET, and RasPPPoE. Among them, EnterNet is a commonly used one, EnterNet 300 is applicable to Windows 9x, and EnterNet 500 is applicable to Windows 2000/XP. If you have problems with a PPPOE dialing software, uninstall it and use another PPPOE dialing software. Be sure not to use multiple PPPOE software in the same fashion to avoid conflicts.

Other Software conflicts

Uninstall software that may cause interruption. Now, some software such as QQ 2000b may lead to disconnection from the Internet. Further tests are required to test the specific conditions. After uninstalling, many netizens found that the disconnection problem was solved, including users who used the ordinary Modem 163 to dial up the Internet, which also solved the disconnection problem, I have also received emails from my friends to solve the problem of disconnection after uninstalling QQ. If you have QQ, uninstall your OICQ first and try again on the Internet. When you find that some software is disconnected and it is normal to close it, uninstall it.

Improper configuration of virus attacks and firewall software

Although it is less likely to be attacked by hackers and viruses, it is not ruled out. If the virus destroys the components related to ADSL, the ADSL Modem may also be disconnected. We recommend that you install the "Skynet firewall" or "Kingsoft network firewall", which can monitor the communication between your computer and the network in real time and warn you of inexplicable network access methods, effectively reduces the risk of attacks. If the attack is caused by viruses, check the installed firewall, shared Internet proxy server software, and Internet acceleration software when the ADSL Modem is disconnected, stop running this type of software, and then test the Internet to see if the speed is back to normal.