If you mean can you network computer to computer through a phone line, adhock, then if both computers have a dial up modem then yes. It's kind of a pain tho, and not every modem could do it.
If you mean connect to another computer via internet over a phone line then yes if it has a dial up modem.
DSL does use the phone line for access to the DSL modem.
You need a dialup modem. Most computers have them, if not you can buy one that connects by parallel or usb.
80
A modem uses the phone line to connect to the internet. This is usually slower than a wifi connection.
No. There are other methods of connecting to the internet, such as cable internet and 3G.
You need at minimum, a telephone line.
Through the Telephone Line.
DATA Transmission is done through SLIP (Serial Line Internet Protocol) & PPP (Point to Point Protocol) Protocols to enable computers to interact with Internet over Telephone Line.
You don't. The laptop has to connect to the internet separately, either directly through a telephone line (for dial-up service) or a broadband DSL/satellite/cable modem. If you want to connect both machines at the same time, you need a router between the modem and the two machines. (NOTE: this cannot be done with a single telephone line, only with broadband)
software
The modem on your computer must connect to your Internet Service Provider's server over a land telephone line. You connect the computer's modem to a telephone jack as you would a telephone.
Its when you connect through the Internet just through your Telephone Line (No Router) Its very slow and costs a lot. If you want it instead of a Router, Go to your Nearest Computer Store and speak to them about the Price and the Cables Needed.
Dial up uses a telephone line to connect to the internet and is much slower than cable.
A modulator demodulator (MODEM)
Telephone line. Either unplug telephone and connect lead to computer while online, or get double-socket ADSL connector so telephone is unaffected.