"In the cold war days, you knew which communications circuits to watch," he said.

Instead she has joined a communication circuit to one of mine.

He couldn't ask for ground assistance on possible landing points, because the communications circuits were dead.

High-pressure air is online/ the chief called over the communications circuit.

He had been cut off from full contact with the computer after that, limited to reception over a simple verbal communication circuit.

That done, he punched in the communications circuit of their home base and began trying to raise the operations officer.

If the interrogation went badly, he could still intervene over the communications circuit.

She had been depending on him to provide her with a communication circuit to Baronski.

Most circuit elements in communications circuits are designed to be linear.

He could sense a wordless questioning over the internal communications circuit.