Friday, April 8, 2011

【 Weak current College 】 ADSL dial-up broadband stop the cause of the failure in Visual FoxPro


Share in the use of ADSL dial-up networking environments, often appear inexplicably download disruption, Web pages can not open the phenomenon or online multimedia streams suddenly phenomenon, and so on, these phenomena believe most use broadband dial-up users often encounter.

However in case of such phenomena on a careful inspection ADSLMODEM, we will see dial-up login is successfully connected. That's what caused these symptoms often appear? in fact, the above several dial-up Internet access failure is broadband dialup process stop phenomenon, as long as in the following ways from different angles, to troubleshoot all, can effectively avoid the strange Internet failure!

Check network connection quality is excellent

On what the Internet means that directly affect the quality of the network card and to determine whether the network connection's properties. In order to ensure that the network connection status as stable, we'd better use a previously has been replaced by the ISA network card PCI network card, purchase card when try to pick a brand product, not too low price products, after all, the brand of network card or a card price is too cheap for a long time, has the potential to trigger a variety of network failure. In addition, in the same workstation, not at the same time, the installation of two or two above the NIC device because multiple network cards when it is easy to install with a resource conflict, once this phenomenon, the NIC device even can barely work, its status is also not very stable. So, when we encounter a dial-up Internet connection is not stable symptoms, be sure to check whether the workstation installed multiple network cards, if yes we should be connected to a LAN or other workstation network card removed from the system, simply connect the NIC device ADSLMODEM online test, if the symptoms immediately resolved, it shows Broadband dialup process stop phenomenon is multiple network cards in the conflict.

Of course, the network card and the motherboard socket contacts close degree also affects the stability of the dial-up connection. In order to ensure that the network connection will close contacts with the socket on the motherboard, we installed network card, be sure to check out the corresponding slots on the motherboard for dust or foreign bodies exist to prevent the plug from the socket affect the smooth insert the network card, reluctance even if the network connection will be inserted into the slot, NIC will not come into close contact with the bottom of the slot, making it easy to create network connection does not work. If the computer motherboard "service," a long time, its socket may accumulate thick layer of dust, the slot on the side of the Reed elasticity may gradually lost, which affects the network card and socket close contact; in addition, if the network card inserted into slot angle wrong or strength comparison Meng, has the potential to get slots on the side of the Reed, thus affecting the network card bending smoothly to insert.

Check the connection lines is stable

Because the Internet signal to be transmitted through a connection line, if the connection lines in bad or frequently affected by outside interference, the broadband dialup process stop phenomenon is more likely to occur.

Generally speaking, the dial-up connection lines unstable reasons, most of the network connection circuit caused by contact with no sound, this includes the network connection line their own problems and Crystal head. To do this, on the exclusion of such symptoms, we should use network line instrument connection cable connectivity performance test, if the line connection performance is not good, it is most likely that the quality is not good or twisted pair cable breakage occurs in the middle or shorted phenomenon, this must be good with the other components of the cable to connect your computers; if testing found is crystal rickety instability caused by dial-up connection, we can replace a Crystal head. Remind everyone to Crystal head and card contacts if not good, it may cause instability in the dial-up connection and the symptom. Of course, in particular for line connection, we must pay attention to the use of different voice separator, their specific connection operation methods may not be the same, we must strictly follow the operating instructions instructions are correctly connected, not according to their own experience for casual connect; and in order to prevent the communication connection line affected by the interference of external communication, we try not to dial-up connection lines connect telephone extensions, fax machines and other equipment.

Check the operating system is normal

Here the operating system is normal, mainly refers to the current workstation operating systems are compatible with ADSL dial-related equipment. It is best to choose the installed operating system's workstation WindowsXPSP2 as dial-up host, because the system is compatible with ADSL-related equipment of the best performance in the system device ADSLMODEM work stability is the best.

Check whether mutual interference Dialer

In General, through ADSL devices connected to the Internet network way have dedicated line access and virtual dial either, but most ordinary users are virtual dialup to the Internet, in this way the Internet is Dialer work stability becomes a key factor. After in different system environments operating tests, we found in WindowsXP systems environment using its built-in PPPOE dial-up, broadband, dial-up rarely occur stop phenomenon, dial stability is relatively high;

If you use a specific Dialer when ADSL dial cannot be successful, we can consider the dialers completely uninstalled from the system, and then choose the clean other appropriate virtual dialers, do not install workstation system at multiple virtual dialing program, so it is easy to cause dial appears strange symptoms.

In addition, we often use some applications can easily lead to ADSL dial disconnection occur, for example, often use QQ2000b program, it is easy on the stability of ADSL dial-up, causing interference to avoid such disturbances we'd better be uninstalled from your system clean. As for the other what software will lead to a dial-up stop phenomenon, we also need to find and test.

Check ADSL settings are correct

If we are using ordinary ADSLMODEM devices and the device built-in routing feature is enabled, then we will use P2P software download information from the Internet, it is easier to stop a dial-up, can occur, mainly ordinary ADSLMODEM device with routing capabilities to meet the needs of P2P software, network performance, and dial-up is frequent disconnection, dropped phenomenon. In order to avoid such factors dial stop phenomenon, we can use P2P software, log on to the ordinary ADSLMODEM device management interface, the device's routing function temporarily closed down, and will restart at ADSLMODEM equipment, so we use P2P software downloaded from the Internet when no information is prone to breaking down. In addition, we at ADSLMODEM device admin interface, as the device's IP address is set to static addresses, while the DHCP function off, to prevent IP address conflicts cause the Internet often dropped.

Check the network virus exists

If the above actions we are successfully check, removal, ADSLMODEM equipment still appear disconnection, dropped phenomenon, we estimate that is likely to be local workstation system has network viruses, because some viruses can easily cause ADSLMODEM devices stop, off line. To do this, we may occasionally use the latest version of anti-virus software on your workstation system thoroughly virus killing the operation, after killing the virus, you also need to install on the local system time on genuine security firewalls to prevent virus attacks again, affect our ADSLMODEM device dial stability.

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