Dial-up internet access, usually calledDial-up, is a way of connecting to theInternet with atelephone line.
Amodem is connected between a computer and a telephone line and then the modem is instructed to dial the phone number of anInternet service provider (ISP) to connect to the Internet. The ISP must be a service provider with several dial-up modems waiting to accept dial-up calls. This kind of internet is slower thanDSL.
In the late 20th century, dial-up service was the most common way of connecting to the Internet in most parts of the world. Since the middle of the 2000s it's been largely replaced by DSL andcable modem.
