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Causes and solutions of "Error 678" for broadband dial-up Internet users Broadband ADSL dial-up Internet users often encounter the fault prompt of "Error 678": the Internet has been normal, but one day suddenly can't get on, and "Error 678" and other prompts appear when dialing up to connect, and the general user is helpless against this kind of failure, and some also suspect that the password is stolen? In general, it is not easy to judge the specific cause of this failure, but after analysis, in most cases, it can be solved smoothly.
The following is a description of the causes and solutions of this kind of failure: 1. What does "Error 678" mean? Broadband ADSL dial-up Internet access uses PPPoE protocol connection, transmits data through ** line, and uses ADSL dedicated modem to realize data modem, the meaning of error prompt 678 is:
The remote computer is not responding, which means that the data is sent out from the computer to the network card, including the transmission of the ** line, and the port of the terminal board of the central office (telecommunications office room end) will prompt 678 error if there is a problem with the data transmission in the process of returning the data to the computer. To put it simply, the network is not working.
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It's disconnected!! I think I've had it here! I was hung up by the car that day、I remember it was error 678
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<>1. Definition of Dialing Error:
Error 678 is one of the faults of broadband. The implication is that the remote computer is unresponsive. To put it simply, the network is not working.
Broadband dial-up Internet access uses PPPOE protocol connection, the meaning of error prompt 678 is, the remote computer is not responding, which means that the computer sends instructions to the network card to send data outward, including the transmission of network cables, and the port of the terminal board of the central office (computer room end) processes the data transmission problems in the process of returning data to the computer.
2. Common reasons:
There are many reasons for error 678, such as: equipment problems in the computer room, backbone cable problems, wiring cable problems, user network cable problems, user computer network card problems, user computer system problems, etc., which may lead to error 678. Another reason is that if you use a router, you usually don't need to use a broadband connection anymore, and if you use it again, you will get a 678 error.
3. Solution:
1. Please confirm whether you are using a router, if you are using a router, the dialing operation is completed by the router, and there is no need to manually dial the number on the computer;
2. Please confirm whether there are any software restrictions such as firewalls or other Internet assistants, and if so, it is recommended that you log out and then try to dial up;
3. Please check whether the network card light is flashing, check whether the crystal head is plugged in, and push the network cable inward for testing;
4. Please deactivate the local connection after deactivation, and then re-connect the broadband connection, the specific method: right-click the desktop network neighbor, select Properties, right-click the local connection in the new pop-up window, select Deactivate, and then right-click the local connection later, select Enable, if the dial is still prompted 678, you can call the customer service to contact the engineer to check;
Note: Try not to replug the Ethernet cable more than once, reinserting the Ethernet cable multiple times may damage the crystal head.
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The user port is incorrect, the link is not established, the VLAN is incorrectly bound, the local link is unreachable, and the uplink device is faulty.
Solution: 1. First confirm that the adsl modem dial-up is normal or the physical link between the network cable and the switch is unobstructed, because the IP automatically obtained by the network card is not cleared, so when dialing again, the network card cannot obtain a new IP address will prompt 678, the operation method is: turn off the adsl modem, enter the network connection of Cong Xun in the control panel, right-click the local connection to select disable, and right-click the local connection to select enable after 5 seconds, and then open ADSL modem dial liquid Zheng Yan can be;
If it is a direct network cable to the home, the user can disable the local connection, select the local connection after enabled, right-click to select the status, check whether the receipt and delivery are normal, and check whether a valid private IP can be obtained (China Telecom has no private network IP, limited to mobile fiber broadband);
2. If the first step is invalid, then in the case of turning off ADSL MODEM, still disable the local connection (network card), restart the computer, and then enable the local connection (NIC) and then turn on ADSL MODEM to solve the problem;
3. If the above steps cannot be solved, check whether the NIC light is on, and if the power light flashes, check the power supply and modem itself; If the external line indicator is still flashing, you can check the indoor line by yourself;
4. If the network card light is normal, step 1 and 2 cannot be solved, then lead the user to uninstall the network card driver and reinstall the network card driver. If the user XP system is in accordance with the knowledge number:
9973, how to set up ADSL dial-up connection under winxp method leads the user to create a dial-up connection, if the 98 system recommends that the user install rasppoe software or ehernet300 software connection.
1. First confirm that the adsl modem dialing is normal, because the IP automatically obtained by the network card is not cleared, so the network card cannot get the new IP address when dialing again, the operation method is: turn off the adsl modem, enter the network connection of the control panel and right-click the local connection to select disable, right-click the local connection to select enable after 5 seconds, and then turn on the adsl modem dial-up; 2. If the first step is invalid, then in the case of turning off ADSL MODEM, still disable the local connection (network card), restart the computer, then start the local connection (NET CARD), and then turn on ADSL MODEM to solve the problem; 3. If the above steps can not be solved, check whether the network card light is on, if the network card light is not on, refer to the dispatch knowledge base: "the network card light is not lit or often does not light up" solution 4, if the network card light is normal 1, 2 steps can not be solved, then lead the user to uninstall the network card driver, reinstall the network card driver, if the user XP system according to: >>>More
1. Broadband Internet display "error 678", it is caused by modem damage, poor contact of network cable and network card, ** line obstruction, etc., if there is a router, it is recommended that you can first power off and restart, if it is still not available, it is recommended that you remove the router and check whether the modem signal light is normal: >>>More
1. Broadband Internet display "error 678", it is caused by modem damage, poor contact of network cable and network card, ** line obstruction, etc., if there is a router, it is recommended that you can first power off and restart, if it is still not available, it is recommended that you remove the router and check whether the modem signal light is normal: >>>More
1. Definition of Dialing Error:
Error 678 is one of the faults of broadband. The implication is that the remote computer is unresponsive. To put it simply, the network is not working. >>>More
1. Broadband Internet display "error 678", it is caused by modem damage, poor contact of network cable and network card, ** line obstruction, etc., if there is a router, it is recommended that you can first power off and restart, if it is still not available, it is recommended that you remove the router and check whether the modem signal light is normal: >>>More