Dial-up types V.32 modem A V.32 modem is used in 9,600 baud data communications. It usually comes in external form and connects to the serial port. V.32 bis modem A V.32 bis modem is used in 14,400 baud data communications. It also uses a V.42 bis protocol is used for error recovery and data compression. It is commonly an external modem. V.34 modem A V.34 modem is used in 28,000 baud data communications. It is the standard modem used today. It may be plugged externally or plugged into an ISA card bus. Connection types Dial-up modem A Dial-up modem transmits data over regular telephone lines using an internet service provider (ISP). It has a maximum speed of 56 kilobits per second, making it the slowest type of model. It is available in external and internal models. Cable modem A Cable modem provides receives signals from the same receivers used in Cable television. It provides a faster internet connection than a Dial-up modem. Dsl modem A Dsl modem is transmits data on a dedicated telephone connection. It is faster than a Dial-up modem, but equal to or slower than a Cable modem. Interface types Hardware modem A Hardware modem is housed in a separate box that connects to both the computer and the phone or Cable line. It uses a built-in processor to perform conversions, allowing it to operate independently from the computer. It can be difficult to update or upgrade. Software modem A Software modem lets the computer’s processor handle most or all of the conversion functions. It uses up the computer’s system resources, which can slow down other applications. It is available for Windows operating systems only.
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