the number of the phone from which the call has been made in one perceptive network.
Tag Archives | Telecommunications
Device which measures frequency of injected radio-frequency voltage by observing the length of a resonant line.
Signal transmitted from a point B to point A in a circuit, when triggered by a signal from a point A to a point B.
A delay line, also known as sonic delay line, based on the time of propagation of sound waves.
Positive feedback which occurs when a sound loop exists between an audio input and an audio output.
A device used to diffract and shift the frequency of light using sound waves. It operates via acousto-optic effect.
Device which generate electric current or voltage directly in response to stimulation, such as thermocouple.
A variant of differential pulse-code modulation which allows further reduction of the required bandwidth for a given signal-to-noise ratio.
An antenna array that consists of four equidistant vertical elements which transmit or receive directional radio waves.
An important element of an optical fiber network which combines several lower-bandwidth streams of data into a single beam of light.