A modem (modulator-demodulator)
See below links.
No, most of the landline telephone network and almost the entire mobile phone network use digital technology.
Integrated Services Digital Network (Integrated Services Digital Network) An international standard for switched, digital dial-up telephone service for voice and data.
Cellular Telephones is using the Integrated Services Digital Network ISDN while the Cordless Telephone is using the Public Switched Telephone Network PSTN, same with ordinary telephone.
It is the abbreviation for Integrated Services Digital NetworkViper1A wide area network (WAN) oriented data communication service provided by telephone companies JunkCollectorISDN(Integreted Service DIgital Network)is an technology that provides simultanous transmission of data + voice over a single channel or wire. DSL and ADSL modems best describes its application in action. For furtther rfrence yo can go to:- http://en.wikipedia.org/wiki/ISDN. Raj_halcyon
ISDN stands for Integrated Services Digital Network. It is a type of digital telephone network that allows for voice, data, video, and other services to be transmitted simultaneously over a single line.
The National Integrated Service Digital Network, also known as National ISDN, is a standard for how PRI switches are to be implemented. Applications that use National ISDN are said to be more cost-effective.
http://wiki.answers.com/Q/How_is_the_data_and_imformation_transimited_over_public_telephone_network,public switched telephone networks and intergrated service digital networks.
Full form : Integrated Services Digital Networkmeans of transmitting sound and data: a digital telephone network that can transmit both voice and data messages
PSTN Network (Public Switch Telephone Network)
Digital subscriber line (DSL, originally digital subscriber loop) is a family of technologies that provide internet access by transmitting digital data over the wires of a local telephone network.
Circut Switching
A DECT Cordless telephone is a portable telephone device that allows one to make calls without the interference of a wireless network. DECT technology originated in Europe and has become very popular.