- 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 telephone networks, a means of controlling distant switching selections by pulsing. Note: In revertive pulsing, the near end receives signals from the far end.
Industry:Telecommunications
In telephone networks, access in which exchange services are provided for originating or terminating interexchange telecommunications within the exchange area.
Industry:Telecommunications
In telephone or two-way radio systems, that method of communication over a speech circuit in which the talker is required to keep a switch operated while talking. Note: In two-way radio, push-to-talk operation must be used when the same frequency is employed by both transmitters. For use in noisy environments, or for privacy, some telephone handsets have push-to-talk switches that allow the speaker to be heard only when the switch is activated. Synonym press-to-talk operation.
Industry:Telecommunications
In telephone switchboard operations, operation intended to ensure fair distribution of the time of one or more lines among groups of call originators.
Industry:Telecommunications
In telephone switching systems, a single supervisory pulse, i.e., the momentary presence of, or interruption of, a supervisory signal. Note: An example of a wink is the momentary flash of a supervisory light on an attendant's switchboard.
Industry:Telecommunications
In telephone switching systems, recurring pulsing in which the off-condition is relatively short compared to the on-condition. Note: On key-operated telephone instruments, the hold position, i.e., the hold condition, of a line is often indicated by wink pulsing the associated lamp at 120 pulses per minute. During 6% of the pulse period the lamp is off and 94% of the period the lamp is on, i.e., 30 ms (milliseconds) off and 470 ms on.
Industry:Telecommunications
In telephone systems, a service provided by a unit that is inserted on each end of a transmission circuit for the purpose of verifying supervisory signals on the circuit. See automatic ringdown circuit.
Industry:Telecommunications
In telephone systems, a signal used by the calling end of a trunk or line to indicate a request for service. Note: A seizure signal also locks out the trunk or line to other demands for service.
Industry:Telecommunications
In telephone systems, a switching system in which telephone operators receive call instructions orally from users and complete them by automatic equipment. 2. At tape-relay intermediate stations, the manual routing or rerouting of taped messages without rekeying them.
Industry:Telecommunications
In telephone systems, an arrangement in which two or more user end instruments, usually telephones, are connected to the same loop. Note: If selective ringing is not used, individual users may be alerted by different ringing signals, such as a different number of rings or a different combination of long and short rings. Party lines remain primarily in rural areas where loops are long. Privacy is limited and congestion often occurs. Synonym multiparty line.
Industry:Telecommunications
