telephone circuit in a sentence

Largely because of the American trade embargo, only two telephone circuits-- both routed through Italy-- are available for calls between Cuba and the United States.
A method was invented whereby a telephone circuit could be established using the one wire and earth return method similar to the telegraph circuit method.
The connection was made using telephone circuits to Germany, where an uplink station beamed up the image to a Russian satellite and back down to Moscow.
But now, thousands of phone calls sent in a format represented by the ones and zeros of computer code can intermingle at once on a telephone circuit.
The PAD service could be connected to via a dedicated four-wire telephone circuit using a PSS analog modem and later on via a Kilostream digital access circuit.

Perhaps the most significant product innovation during this period was the bantam jack, a miniaturized component that eventually became the standard for telephone circuit access and patching.
Sometimes equalization problems with a telephone circuit make it necessary to run higher levels than a circuit with a flat response from 300 to 3000 Hz would require.
On March 10, 1891, Almon Brown Strowger, an undertaker in Kansas City, Missouri, patented the stepping switch, a device which led to the automation of telephone circuit switching.
As a graduate student in 1991, he submitted a paper about telephone circuits that was presented by Lin a year later at an academic conference under the professor's name.
A sound-powered telephone circuit can be as simple as two handsets connected together with a pair of wires, which is defined as the " talk " portion of the circuit.

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