- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
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ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
In a packet-switched network, transmission in which each packet is encoded with a header containing a destination address sufficient to permit the independent delivery of the packet without the aid of additional instructions. Note 1: A packet transmitted in a connectionless mode is frequently called a datagram. Note 2: In connectionless mode transmission of a packet, the service provider usually cannot guarantee there will be no loss, error insertion, misdelivery, duplication, or out-of-sequence delivery of the packet. However, the risk of these hazards' occurring may be reduced by providing a reliable transmission service at a higher protocol layer, such as the Transport Layer of the Open Systems Interconnection--Reference Model. 2. The transmission of a unit of data in a single self-contained operation without establishing, maintaining, and releasing a connection.
Industry:Telecommunications
In a packet-switching network, a node that contains data switches and equipment for controlling, formatting, transmitting, routing, and receiving data packets. Note: In the Defense Data Network (DDN,) a packet-switching node is usually configured to support up to thirty-two X. 25 56-kb/s host connections, as many as six 56-kb/s interswitch trunk (IST) lines to other packet-switching nodes, and at least one Terminal Access Controller (TAC. )
Industry:Telecommunications
In a packet-switching network, a unique packet that causes a report of each stage of its progress to be sent to the network control center from each visited system element.
Industry:Telecommunications
In a party line, ringing only the desired user instrument. Note: Without selective ringing, all the instruments on the party line will ring at the same time, selection being made by the number of rings.
Industry:Telecommunications
In a periodic pulse train, the ratio of the pulse duration to the pulse period.
Industry:Telecommunications
In a phase-locked loop, a filter located between the phase detector (or time discriminator) and the voltage controlled oscillator (or phase shifter. )
Industry:Telecommunications
In a photodetector, the ratio of the electrical output to the optical input. Note 1: Responsivity is usually expressed in amperes per watt, or volts per watt, of incident radiant power. Note 2: Responsivity is a function of the wavelength of the incident radiation and the bandgap of the material of which the photodetector is made. Deprecated synonym sensitivity.
Industry:Telecommunications
In a physical medium, scattering of lightwaves, caused by thermally driven density fluctuations. Note: Brillouin scattering may cause frequency shifts of several gigahertz at room temperature.
Industry:Telecommunications
In a power system, a switch used for closing, opening, or changing the connections in a circuit or system or for purposes of isolation. Note: It has no interrupting rating and is intended to be operated only after the circuit has been opened by some other means, such as by a circuit breaker or variable transformer.
Industry:Telecommunications
In a processor, the part that performs arithmetic operations; sometimes the unit performs both arithmetic and logic operations.
Industry:Telecommunications
