What equipment must be used when a personal computer dials up to access the Internet?

The device that must be used is "modem". Accessing the Internet through dial-up mode (telephone network) means that the user's computer uses a modem to connect to the ISP through the telephone network, and then accesses the Internet through the ISP connection; therefore, the modem must be used when the personal computer accesses the Internet network through dial-up mode. device of.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The device that must be used when a personal computer connects to the Internet through dial-up is a "modem".

Modem is a device that must be used when a personal computer connects to the Internet through dial-up.

Accessing the Internet (Internet) through dial-up (telephone network) means that the user's computer uses a modem to connect to the ISP through the telephone network, and then accesses the Internet through the ISP connection.

The user's computer and the ISP's remote access server (RAS, remote access server) are both connected to the telephone network through a modem. When the user accesses the Internet, the user establishes a connection with the ISP's RAS through dial-up. Access the Internet through your ISP's router.

The telephone network is designed to transmit analog signals. Digital signals from computers cannot be transmitted directly over ordinary telephone lines, so a practical modem is required. At the sending end, the modem converts the digital signals in the computer into analog signals that can be transmitted over the telephone line; at the receiving end, the modem converts the received analog signals into digital signals that can be recognized by the computer.

How dial-up Internet access works

The number of telephone trunks that an ISP can provide is related to the success rate of establishing a connection with the ISP. Each telephone trunk can only support one user's access at a time. The fewer telephone trunks provided by the ISP, the lower the success rate for users to establish a connection with the ISP's RAS. On the user side, a computer can be directly connected to the telephone network through a modem, or a proxy server can be used to indirectly connect a local area network to the telephone network through a modem.

The maximum transmission rate of better lines can reach 56Kbps, general lines can only reach 33.6Kbps, and the transmission rate of poor lines will be lower. Since phone lines support limited transmission rates, this method is suitable for personal or small business use.

Due to technical reasons, the reliability of dial-up lines is not high enough. During the transmission of large amounts of information, the connection is sometimes interrupted, so this method is not suitable for providing Internet services.

Settings for dial-up Internet access

Dial-up networking is a dial-up program provided in Windows 95. Its function is to establish a communication between two computers through a modem link. Connecting to the Internet through dial-up networking actually means that your computer logs in to the ISP dial-up server through dial-up. It is a necessary program for accessing the Internet through the telephone network.

In the default installation settings of Windows 95, there is no dial-up network option, so you need to install it yourself. To install dial-up networking, follow these steps.

(1) Double-click the "Add/Remove Programs" icon in the "Control Panel" window to open the "Add/Remove Programs" dialog box. In the dialog box, click the "Install Windows" tab, which will open "Install Windows" tab.

(2) In the "Install Windows" tab, click the "Communication" option in the "Components" list, and the "Communication" dialog box will pop up.

(3) In the "Communication" dialog box, select the check box to the left of "Dial-up Networking" in the "Components" list. Click the "OK" button and you will be returned to the "Install Windows" tab.

(4) In the "Install Windows" tab, click the "OK" button, a prompt dialog box will pop up, asking us to insert the Windows 95 installation disk and enter the path.

(5) After completing the settings, click the "OK" button, and the system will install the dial-up network.

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