(1) The quality of the network card is unstable.
The fault phenomenon is that once the network is disconnected, it can't be connected again. If the line synchronization light (ADSL light, DSL light or Link light) of the modem is always on, the fault of the external line is basically ruled out, and it is generally judged as a network card problem. If the network cable, computer and slot problems can be eliminated, it is judged that the quality of the network card is unstable and the network card should be replaced in time.
(2) surfing the Internet and talking cannot be done at the same time.
The fault phenomenon is that the microphone network will be disconnected when it is lifted. Generally, the external insulation is poor, or the telephone line connector is in poor contact, or the separator is of poor quality.
(3) Incorrect tandem telephone extension
Because the telephone extension is connected incorrectly, the network is disconnected due to crosstalk. Be careful not to connect the telephone extension in front of the separator, but to connect the extension behind the separator.
(4) Modem fever
Because the modem is not turned off for a long time, overheating of the modem will also lead to unstable internet access. It is recommended that you disconnect the modem when you are not surfing the Internet.
(5) There are high-power electrical equipment beside the modem.
This situation can easily lead to the interference of network signals. It is recommended not to place some high-power electrical equipment such as mobile phones and refrigerators next to the modem.
Are postal services and telecommunications the same?
Postal service and telecommunications are different. Postal service and telecommunications originally belonged to a unit called the post office. 1997, postal services and telecommunications were separated, and the post office and telecommunications bureau were established respectively, becoming two different units.
China Telecom Group Co., Ltd. is a super-large state-owned communication enterprise in China and a global partner of Shanghai World Expo. It has been selected as one of the "Top 500 Enterprises in the World" for many years, mainly engaged in comprehensive information services such as fixed telephone, mobile communication, satellite communication, Internet access and application. By the first half of 20 1 1, there were fixed telephone users 1.94 million, mobile phone (CDMA) users 62.36 million and broadband users 601.74 million. The group company has total assets of 632.2 billion yuan and 670,000 employees.