A modem is a device that enables two computers to communicate with each other by converting digital data into an analog signal that can be transmitted over telephone lines. In order for a computer to communicate with the modem, it must be equipped with a serial port.

The modem must also be configured with the correct settings for the telephone line it is connected to. These settings include the type of service, the maximum data rate, and the number of bits per character.

When a computer sends data to a modem, the data is broken down into packets. Each packet …