If users connect to the system by rote via dial-up line(e.g. from home), access should be restricted by a dial-up access control. Dial-up access controls prevent unauthorized acces from remote users...
Dial-up internet access is when a normal telephone line and a modem are used to connect to the Internet. The computer tells the modem to dial the phone number of an Internet Service Provider (ISP)...
This would appear to relate to devices such as pagers that are activated by calling a telephone number- on a conventional phone. There are a number of similar devices.