What is the reason for error code 678?

Error code 678 is one of the broadband fault codes. The meaning is that the remote computer is unresponsive.

##Broadband adsl dial-up (Recommended learning: PHP video tutorial)

Broadband adsl dial-up Use pppoe protocol to connect to the Internet, transmit data through telephone lines, and use adsl dedicated modem to implement data modulation and demodulation. The meaning of error message 678 is: the remote computer is not responding. This means that if there is a data transmission problem from the computer issuing instructions to the network card sending data out, including the transmission of the telephone line, the port processing of the terminal board at the central office (telecommunications office computer room), and the return of data to the computer, error 678 will be prompted. Simply put, the network is down.

Common reasons

Generally speaking, there are many reasons for error 678. From DSLAM to below (including DSLAM), as long as one link is wrong, it may Error 678 occurs, such as: DSLAM equipment problem, computer room user board problem, below the transfer box, trunk cable problem, distribution cable problem, user line problem, user MODEM problem, user computer network card problem, user computer system problem, etc. All may lead to error 678. It is not easy to judge the specific cause of this kind of failure, but after analysis, in most cases it can be solved smoothly.

Another reason is that if you use a router, you usually don’t need to use a broadband connection. If you use it again at this time, a 678 error will occur.

Fault Analysis

Error code 678: Broadband dial-up Internet users often encounter the "Error 678" fault prompt. Dial-up Internet access uses the pppoe protocol to connect. The remote computer is unresponsive, which means that when the computer issues instructions to the network card sends data to the outside, including line transmission, port processing at the central office (such as the telecommunications office computer room), and data transmission problems in the process of returning data to the computer, 678 will be prompted. The error simply means that the network is down.

Possible reasons: The link is not established, the user port is wrong, the vlan binding is wrong, the local link is unreachable, and the uplink device is faulty.

Solution

1. First confirm that adsl modem dial-up is normal or the physical link between the network cable directly connected to the home and the switch is smooth, because the IP automatically obtained by the network card It has not been cleared, so when dialing again, the network card cannot obtain a new IP address and will prompt 678. The operation method is: close the adsl modem, enter the network connection in the control panel, right-click the local connection and select disable, and after 5 seconds, right-click the local connection and select enable. , and then open the adsl modem to dial up; if the user has direct network cable access, you can disable the local connection, then select the local connection after enabling it, right-click and select the status, check whether the reception and transmission are normal, and check whether a valid intranet can be obtained IP (Telecom has no intranet IP, only mobile fiber optic broadband);

2. If the first step is invalid, when turning off the adsl modem, still disable the local connection (network card), restart the computer, and then Enable local connection (network card) and then open adsl modem to solve the problem;

3. If the above steps cannot solve the problem, check whether the network card light is on. If the power light flashes, check the power supply and the modem itself; if the outside line indicates If the light is still flashing, you can self-check the indoor line;

4. If the network card light is normal and cannot be solved in steps 1 and 2, the user will be asked to uninstall the network card driver and reinstall the network card driver. If the user's xp system follows: Knowledge number: 9973, how to set up an ADSL dial-up connection under WINXP. The method will lead the user to create a dial-up connection. If the user's 98 system is recommended, the user can install Raspppoe software or EHERNET300 software to connect.

5. If the above operation does not work, contact the network provider in your area to confirm the port.

6. Adsl modem failure is the main reason. It may be that the router has not been set up. The author encountered this situation when using adsl. I thought the router was broken and bought a new one, but the result was still the same. After reading the manual, I realized that it is not just about plugging in the cable, but also To set up, take TP-LINK as an example. First enter 192.168.1.1, then set up the wizard, fill in admin for the username and password, click Next, select the Internet access method, and then fill in the relevant items. Note that you will not need to dial in the future.

7. If multiple computers use a router to access the Internet, you can try to remove the router and connect to the Internet. If you can access the Internet smoothly, it means that the router is faulty, and you should troubleshoot the router or replace it with a new one.

8. If you are an annual ADSL subscriber, if this happens during use, you may be in arrears, please consult the customer service center. In some areas, users of China Telecom or China Unicom can get through when the phone is in arrears, but they cannot access the Internet. At this time, it may also be because the phone is in arrears, because the telecommunications department in some areas will Instead of stopping using the phone, stop using the Internet.

9. Insufficient power supply of some brands of modems can easily cause error 678.

10. If none of the above methods can solve your problem, you can try pressing reset of adsl modem two or three times and try again.

11. Damage to the adsl modem device will also cause error 678. Although the adsl modem appears to be operating normally, the connection fails. The author has encountered such a problem and finally solved it by replacing it with a new adsl modem. question.

12. Poor contact between the cat line and the splitter can also cause error 678. When there is poor contact, there is no problem making calls. Occasionally, the broadband connection can be connected, but it is easy to drop the call, or error 678 is reported. The author is I was so distressed by this problem that I had to replace the cat with another one. Later, I unintentionally reconnected the cat line, and it was cured. I am telling everyone, hope it helps.

13. Poor contact or damage to the network card may also cause the 678 error. Try unplugging and re-inserting or replacing the network card with a new one to solve the problem.

If the above does not work, try deleting the broadband connection and re-creating a new network connection.

Check whether the computer broadband cable is plugged in properly....

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