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Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the digitalised circuits of the public switched telephone network. [1] Work on the standard began in 1980 at Bell Labs and was formally standardized in 1988 in the CCITT "Red ...
A computer network is a set of computers sharing resources located on or provided by network nodes.Computers use common communication protocols over digital interconnections to communicate with each other.
It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies.
A digital multicast television network, also known as a diginet or multichannel, is a type of national television service designed to be broadcast terrestrially as a supplementary service to other stations on their digital subchannels. Made possible by the conversion from analog to digital television broadcasting, which left room for additional ...
According to the most common definition of a digital signal, both baseband and passband signals representing bit-streams are considered as digital transmission, while an alternative definition only considers the baseband signal as digital, and passband transmission of digital data as a form of digital-to-analog conversion. [citation needed]
The Broadband Integrated Services Digital Network (B-ISDN) was designed for these needs. [13] The types of traffic supported by a broadband network can be classified according to three characteristics: [14] Bandwidth is the amount of network capacity required to support a connection. Latency is the amount of delay associated with a connection.
Originally a network of fixed-line analog telephone systems, the PSTN is now predominantly digital in its core network and includes terrestrial cellular, satellite, and landline systems. These interconnected networks enable global communication, allowing calls to be made to and from nearly any telephone worldwide. [1]
Wi-Fi (/ ˈ w aɪ f aɪ /) [1] [a] is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.