- 産業: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
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.
A requirement that specifies a performance characteristic that a system or system component must possess; for example speed, accuracy, frequency.
Industry:Telecommunications
A response sent by a receiver to indicate successful receipt of a transmission. Note: An example of an acknowledgement is a protocol data unit, or element thereof, between peer entities, to indicate the status of data units that have been successfully received. 2. A message from the addressee informing the originator that the originator's communication has been received and understood.
Industry:Telecommunications
A restricted radiation device which establishes a radio frequency field in its vicinity and detects changes in that field resulting from the movement of persons or objects within the radio frequency field. Examples: microwave intrusion sensors; devices that use rf energy for production line counting and sensing.
Industry:Telecommunications
A restricted radiation device, exclusive of those employing conducted or guided radio frequency techniques, used for the transmission of signs, signals (including control signals,) writing, images and sounds or intelligence of any nature by radiation of electromagnetic energy. Examples: Wireless microphone, phonograph oscillator, radio-controlled garage door opener, and radio-controlled models.
Industry:Telecommunications
A return path that is common to two or more circuits and that serves to return currents to their source or to ground.
Industry:Telecommunications
A revenue producing pair of wires, or its equivalent, between a customer's station and the central office from which the station is served.
Industry:Telecommunications
A right circular cylinder with a magnetizable surface on which digital data can be stored and retrieved.
Industry:Telecommunications
A ring network that allows unidirectional data transmission between data stations by transferring data in predefined slots in the transmission stream over one transmission medium such that the data return to the originating station.
Industry:Telecommunications
A room or container designed to attenuate electromagnetic radiation.
Industry:Telecommunications
A routine or storage medium used to compensate for a difference in rate of flow of data, or time of occurrence of events, when transferring data from one device to another. Note: Buffers are used for many purposes, such as (a) interconnecting two digital circuits operating at different rates, (b) holding data for use at a later time, (c) allowing timing corrections to be made on a data stream, (d) collecting binary data bits into groups that can then be operated on as a unit, (e) delaying the transit time of a signal in order to allow other operations to occur. 2. To use a buffer or buffers. 3. An isolating circuit, often an amplifier, used to minimize the influence of a driven circuit on the driving circuit. Synonym buffer amplifier. 4. In a fiber optic communication cable, one type of component used to encapsulate one or more optical fibers for the purpose of providing such functions as mechanical isolation, protection from physical damage and fiber identification. Note: The buffer may take the form of a miniature conduit, contained within the cable and called a loose buffer, or loose buffer tube, in which one or more fibers may be enclosed, often with a lubricating gel. A tight buffer consists of a polymer coating in intimate contact with the primary coating applied to the fiber during manufacture.
Industry:Telecommunications
