The original telephone switchboards were literally patch boards: the caller and callee were physically connected with a wire (patch cable) to form a circuit.
Example photo
Photo from here.
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The original telephone switchboards were literally patch boards: the caller and callee were physically connected with a wire (patch cable) to form a circuit.
Example photo here.
The original telephone switchboards were literally patch boards: the caller and callee were physically connected with a wire (patch cable) to form a circuit.
Photo from here.
