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Syracuse-2 central offices in Paterson, New Jersey, in May and July 1922, respectively. The storied Pennsylvania exchange in New York City was cut-over to service in October 1922.

Most Panel installations were replaced by modern systems during the 1970s. The last Panel switch, located in the Bigelow central office in Newark, was decommissioned by 1983.

Operational overview

When a subscriber removes the receiver (earpiece) from the hookswitch of a telephone, the local loop

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