On This Day in Telephone History March 31ST, 1971 Western Union Corporation acquired TWX exchange service operated by ATT and several independent telephone companies. The TWX sale doesn't include ATT's private line teletypewriter service or the teletypewriter machines used by ATT's DataPhone customers.

On This Day in Telephone History March 31ST 1971

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On This Day in Telephone History March 31ST, 1971 Western Union Corporation acquired TWX exchange service operated by ATT and several independent telephone companies.

The TWX sale did not include ATT’s private line teletypewriter service or the teletypewriter machines used by ATT’s DataPhone customers.