Simple Network check (3)

Article Title: Simple Network check (3 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
3. confirm that there is no problem with the IDC of China Telecom:
After confirming that your network card is correct, and the modem and network line are OK, the settings have been completed according to the requirements of the online program, there may be problems with China Telecom or Cable! If the WAN light of your Turtle (that is, the display light that uses a telephone line to connect to China Telecom) has been inexplicably lit after it is turned on, it may be: 1. the modem is down. 2. data center problems! If you have confirmed through Step 2 that the turtle is good, you should call China Telecom because it may be caused by a data center error (of course, Cable may also be incorrect, you only need to find the "IDC" of your modem )!
The following is China Telecom's main business office. you can find the China Telecom business department in your location and ask them for the telephone number of the IDC! It is said that (this was heard on the Internet) business department personnel may be unfamiliar with the system, so they may first tell you that it is okay to get rid of your entanglement, but there is a problem ...... If your attitude shows a little dissatisfaction, and then strongly asks him to call your IDC and directly call the IDC to ask clearly, it will be easier!