Common ADSL Fault Analysis and Solution (1)

ADSL is now the most standard Internet access method. It is a high-speed broadband technology that runs on the original ordinary telephone line. Its advantage is to make full use of the existing copper network resources, and only need to install ADSL equipment at both ends of the line, to provide users with high-speed access services. At the same time, ADSL data transmission does not affect users' traditional voice usage. Therefore, through ADSL technology, users can access the broadband multimedia network for fast download, and an information expressway based on a common telephone line is established.

However, in this popular application, there are often many problems from dialing and setting. In order to make readers more worry-free, here we will sort out some problems and solutions encountered by the author and my friends in actual use, hoping to help you troubleshoot and solve the problems.

I. Why is the Connection interrupted when the "ADSL" light turns red?

Fault symptom:After dialing successfully, I suddenly found that the network speed was slow. Then I found that the "ADSL" lamp turned red and the network was interrupted. Why?

Troubleshooting:The most important indicator of ADSL is "ADSL", which is used to display the synchronization of the Modem. The green light indicates that the Modem and the local terminal can be synchronized normally; the red light indicates that the Modem is not synchronized; A flashing green light indicates that synchronization is being established. If the "ADSL" indicator turns red during use, it indicates that there is a strong interference on your telephone line at this moment. A connection on the telephone line is not properly connected, there is looseness or the line is faulty. You can use the following methods to prevent and handle the problem:

1) the connection on the line must be well connected, especially the internal connection of the room. In addition, the ADSL line cannot be connected to an extension. If you want to connect, you can use a signal splitter to bring it out. Otherwise, problems listed in the phenomenon will occur.

2) If the telephone line is too long, replace the parallel line with twisted pair wires to improve the line anti-interference capability.

3) sometimes it may be due to weather interference or line problems. It takes a while to restart and dial again to recover naturally.

Analysis conclusion: This type of fault is caused by a large number of factors that touch the line after shutdown.

Ii. Error Code encountered in ADSL dialing.

Fault symptom:After The ADSL line is connected, open The dialing Connection Program in The operating system, click "dial", but The connection fails, and The message "Error 617 The port or device is already disconnecting" is displayed.

Troubleshooting:The error message indicates that the device connected to the dial-up network is disconnected. This may be because PPPoE dialing software is not fully and correctly installed; ISP Server faults; connection lines or ADSL Modem itself. In addition, there are some error messages, which are listed here for your reference.

1) Error 650.

This means that the remote computer does not respond and the connection is disconnected. This may be caused by an adsl isp Server failure, network card failure, or abnormal shutdown, resulting in a network protocol error.

The solution is to check whether the Modem signal lights are correctly synchronized and reinstall network components.

2) Error 797.

The connection device of the ADSL Modem is not found. This may be because the Modem is not powered on, the NIC and Modem connection lines are faulty, and the dial-up program is not bound to related protocols.

The solution is to check the power supply and connection lines, check whether the related protocols are installed in network properties, and check whether there is an exclamation point before the NIC name in "Device Manager.

3) Error 619.

It means that a connection cannot be established with the ISP Server. This may be due to adsl isp Server faults, ADSL telephone line faults, and other reasons.

The solution is to check whether the ADSL signal lamp can be correctly synchronized or consult with the ISP.

Analysis conclusion: During the ADSL dialing process, the dialing is often unsuccessful due to line and other reasons. The corresponding error code will pop up. Understanding the error code will certainly help us to troubleshoot the cause of the fault.