Networking Dial-up Networking is provided with all Microsoft Windows operating systems. It allows a modem and phone line to be used to connect to the campus network.
Some facilities have digital telephone lines.
A somewhat reliable method to identify a digital phone line is the telephone. If it has a display and lots of buttons it is very likely connected to a digital phone line. Digital phone lines can have voltages present that will damage the modem and possibly the computer. Anytime you use a phone line for the first time you should confirm it is an analog phone line. Both of these methods provide the same capability with one exception.