A means of accessing the Internet by using a computer modem and telephone line. The speed of dial up connections is usually slower than other Internet access options.
A connection from your computer that goes through a regular telephone line. You use special communications software to instruct your modem to dial a number to access another computer system or a network. May also be referred to as "dial up networking".
A means of accessing the Internet. It is called a dial up connection because you have to physically connect and disconnect your connection to the Internet.