- Industry: 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 signal that informs a busy telephone user that another call originator is waiting for a connection. 2. A teleprinter exchange facility signal that automatically causes a calling station to retry the call-receiver number after a given interval when the call-receiver teleprinter is occupied or the circuits are busy. Synonym speed-up tone.
Industry:Telecommunications
A signal that informs a busy telephone user that another call originator is waiting for a connection. 2. A teleprinter exchange facility signal that automatically causes a calling station to retry the call-receiver number after a given interval when the call-receiver teleprinter is occupied or the circuits are busy. Synonym speed-up tone.
Industry:Telecommunications
A signal that is generated by a receiver in order to condition a remote transmitter to commence transmission.
Industry:Telecommunications
A signal that may assume either of two polarities, neither of which is zero. Note 1: A bipolar signal may have a two-state non-return-to-zero (NRZ) or a three-state return-to-zero (RZ) binary coding scheme. Note 2: A bipolar signal is usually symmetrical with respect to zero amplitude, i.e., the absolute values of the positive and negative signal states are nominally equal. 2. A pseudoternary signal, conveying binary digits, in which successive "ones" (marks, pulses) are of alternating, positive (+) and negative (-) polarity, equal in amplitude, and in which a "zero" (space, no pulse) is of zero amplitude. Synonym alternate mark inversion signal.
Industry:Telecommunications
A signal that prepares a device to receive data or to perform a function. 2. In start-stop transmission, a signal at the beginning of a character that prepares the receiving device for the reception of the code elements. Note: A start signal is limited to one signal element usually having the duration of a unit interval.
Industry:Telecommunications
A signal that prevents the occurrence of an event. Note: An inhibiting signal may be used, for example, to disable an AND gate, thus preventing any signals from passing through it as long as the inhibiting signal is present.
Industry:Telecommunications
A signal that represents only unclassified or encrypted information, usually in cryptographic systems.
Industry:Telecommunications
A signal transmitted at the first opportunity in the outgoing direction when a terminal detects specific defects in the incoming signal.
Industry:Telecommunications
A signal transmitted in lieu of the normal signal to maintain transmission continuity and to indicate to the receiving equipment that there is a transmission interruption located either at the equipment originating the AIS signal or upstream of that equipment. 2. A signal transmitted in lieu of the normal signal to maintain transmission continuity and indicate to the receiving terminal that there is a transmission fault located either at the transmitting terminal or upstream of the transmitting terminal.
Industry:Telecommunications
