When Benson enters Dr. Ross's home, he takes the downstairs phone off the hook in order to prevent her from calling for help from her upstairs phone. However, that would only work for rotary dial phones, which call out by interrupting the circuit in rapid pulses created by the turning dial. A phone off the hook keeps the circuit intact, preventing such interruptions. However both phones are touch-tone, whose signal is unaffected by another phone on the line being off-hook. So Dr. Ross would be able to dial out regardless.
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05/03/2025 alle ore 08:30
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