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Other
Vintage Telephone
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Information on other vintage
electro-mechanical telephone switching of note.
North Electric CX-100 All Relay Switch An all-relay central office is somewhat of a hybrid of a step-by-step and a crossbar office that used mechanical relays instead of crossbars or mechanical wipers. These switches only used for very small central offices. One company of note who made all-relay central office switches was North Electric of Gallion, Ohio (again, not to be confused with Northern Electric of Canada). The CX-100 and CX-1000 (100 and 1000 subscribers respectively) models were used in a limited degree in the public network.
North Electric CX-100 switch at the Museum of Communications Other Vintage Telephone Switching System Pages Step
by Step (Strowger) Switching Systems
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