Line and Trunk Design for Overseas AUTOVON Switching System
R. Clark, W. Lindbloom, Liam Smith · IRE Transactions on Communications Systems · 1966
Line and trunk circuits which combine twin-contact electromechanical relays with correeds are detailed. Priority, hot line service, and other facilities-a Dial Service Assistance (DSA) switchboard, supervisor's console, and instructor's console are also described.