- 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.
The time interval between (a) the instant of keying off the local transmitter to stop transmitting and (b) the instant the local receiver output has increased to 90% of its steady-state value in response to an rf signal from a distant transmitter. Note 1: The rf signal from the distant transmitter must exist at the local receiver input prior to, or at the time of, keying off the local transmitter. Note 2: Receive-after-transmit time delay applies only to half-duplex operation.
Industry:Telecommunications
The signal attenuation that would result if all absorbing, diffracting, obstructing, refracting, scattering, and reflecting influences were sufficiently removed so as to have no effect on propagation. Note: Free-space loss is primarily caused by beam divergence, i. E. , signal energy spreading over larger areas at increased distances from the source.
Industry:Telecommunications
The standard video-signal waveform, measured in IRE units.
Industry:Telecommunications
The time interval from (a) the instant a step rf signal, at a level equal to the receiver threshold of sensitivity, is applied to the receiver input to (b) the instant the receiver output amplitude reaches 90% of its steady-state value. Note: If a squelch circuit is operating, the receiver attack-time delay includes the time for the receiver to break squelch.
Industry:Telecommunications
The temporary dedication of various parts of a communications system to a specific use, usually in response to a user request for service. Note: The parts seized may be automatically connected, such as by direct distance dialing (DDD,) or may require operator intervention.
Industry:Telecommunications
The switching entity that performs disconnect timing and that decides when the connection is to be cleared. It is usually the calling end office; however, it may be another switching entity such as an office performing centralized automatic message accounting (CAMA) or an operator service system.
Industry:Telecommunications
The use of any telecommunications facilities or services that circumvents those of the local exchange common carrier. Note: Bypass facilities or services may be either customer-provided or vendor-supplied. 2. An alternate circuit that is routed around equipment or system component. Note: Bypasses are often used to allow system operation to continue when the bypassed equipment or a system component is inoperable or unavailable.
Industry:Telecommunications
To remove or eliminate the key from a crypto-equipment or fill device.
Industry:Telecommunications
The transmission of signals that may be simultaneously received by stations that usually make no acknowledgement.
Industry:Telecommunications
Time-division multiplexing in which asynchronous transmission is used.
Industry:Telecommunications
