Figure: Dial-Up Internet access
A voice modem dials an ISP number that connects it to one of the ISP’s modems.
The connection goes through the telephone network.

Dial-up Internet access has been offered since the beginning of the Internet. In dial-up access, a voiceband modem at a subscriber site communicates with the corresponding modem at her ISP site [...]

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Figure: Internet Access
A typical Internet user surfs the Web. Between her and the ISP PoP is the access network.
Internet access service [...]

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