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dial-up is when you have no brordband and you have to dial-up to get on to the internet.
.what is a dial up number
Webster - 1983 Dial K for Katherine 5-18 was released on:
USA: 8 February 1988
Usually, the term "dial-up number" refers to the phone number you dial with your modem for dial-up Internet.
DSL if available, if it is not, then dial-up.