The device you are referring to is called a Modem.
Modem Cable
A modem enables computers to communicate over lines of information whether it be telephone, RS 232, USB, Cable, satellite, or fiber optics. Although the technology for each one is different, they all essentially do the same thing.
A modem (stands for modulator-demodulator) is a device that allows a computer to use a telephone line to communicate with other computers. The fastest modem is 56kbs (56,000 bytes per second). This is a limitation of the phone lines, not of hardware. Modems are rarely used because cable or DSL have replaced them because of speed.
They Both are used to communicate.
Hieroglyphs
rj11
He used a telephone i think.
They used smoke signals to communicate with one another.
A TTY telephone is a special telephone that enables people who are deaf, hearing impaired, or speech impaired to communicate via telephone. A TTY telephone has a special display screen and keypad on it, enabling those with special needs to communicate with the keypad.
To communicate with other people over a long distance.
Because the Janoskians are hawt and to communicate with people.