Dial-up Internet Access: Inexpensive But Slow Category: Dial Up Dial up Internet access is an inexpensive but slow form of Internet access in which the client uses a modem connected to the computer and a telephone line to dial the Internet service provider.By configuring the computer to dial a specific phone number, the computer is granted Internet access. It is usually the only choice available for most rural or remote areas where getting a broadband connection is impossible due to low population and demand.