- 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 transmission-control character used for (a) switching on an answer-back unit in the station with which the connection has been established, (b) triggering the receiving unit to transmit an answer-back code to the terminal that transmitted the WRU signal, and (c) initiating a response that might include station identification, an indication of the type of equipment that is in service, and the status of the station. Note 1: The WRU signal corresponds to the 7-bit code assigned to the WRU. Note 2: The receiving unit may be a telegraph unit, data terminal equipment (DTE,) or other unit. Synonym WRU.
Industry:Telecommunications
A transmitter in the aeronautical radionavigation service which radiates vertically a distinctive pattern for providing position information to aircraft.
Industry:Telecommunications
A transmitter of an aircraft or survival craft actuated manually or automatically that is used as an alerting and locating aid for survival purposes.
Industry:Telecommunications
A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the triggering radar, providing range, bearing and identification information. 2. A receiver-transmitter combination which sends out a coded signal when triggered by the proper type of pulse, enabling determination of range and bearing information by the interrogating station or aircraft.
Industry:Telecommunications
A transport system composed of a carrier system terminated by an ATM multiplexer at each end. The relationship between input and output, i.e., virtual circuits, cannot change on a per call basis, i.e., permanent virtual circuits only are supported. This device does not allow blocking or signal compression.
Industry:Telecommunications
A transportable store-and-forward message-switching system used for rapid deployment in support of tactical forces.
Industry:Telecommunications
A trapdoor in software that allows easy maintenance and development of additional features and that may allow entry into the program at unusual points or without the usual checks. 2. Special instructions (trapdoors) in software allowing easy maintenance and additional feature development. Since maintenance hooks frequently allow entry into the code without the usual checks, they are a serious security risk if they are not removed prior to live implementation.
Industry:Telecommunications
A trial carried out by nominated representatives of the eventual military users of the weapon or equipment to determine if the specified performance and characteristics have been met.
Industry:Telecommunications
A trial-and-error attempt to violate computer security by systematically attempting to use a very large number of possible passwords or keys. Synonym brute-force attack.
Industry:Telecommunications
A trimmed specification or version of the Standard Generalized Markup Language (SGML) that allows Web developers to create customized tags for additional functionality.
Industry:Telecommunications
