DSL
modem
fax
Communication channels.
MODEM (Modulator - Demodulator) allows communication between computers.Generally Modem connects to ISP over analog telephone line and further ISP connects to Computers over Internet.
modem
A device that makes connections within a telephone network by opening and closing electrical circuits is a switchboard. It enables communication by connecting different telephone lines together to establish a call between two parties. Switchboards were commonly used in early telephone systems before modern automated switching systems were developed.
communication media are the physical components through which the communication devices transmit data. e.g. cables, telephone lines, terminals.
Telephone is a device used to contact people in far distances. With the functions and features of modern phone system such as IP PBX , we are able to enjoy VoIP service, call forwarding, call screening and have total control over our communication lines through desktop call controller.
Using the telephone we are able talk to a person especially in long distances. Telephone lines are also used to transmit faxes and get connected to the internet - essential tool for communication.
The Hayes device, commonly referred to as a Hayes modem, is a telecommunications device that allows computers to communicate over telephone lines. It uses a command set, known as the Hayes command set, to control the modem's functions, such as dialing phone numbers and configuring connection settings. This standard enabled easier and more standardized communication between computers and modems, facilitating the growth of online communication in the 1980s and 1990s.
fax machine ;)
they used carrier pigeons because they're telephone lines got destroyed from the gunfire.