DEVICE FOR COMMUTATION OF ORDINARY AND PRIORITY USERS Russian patent published in 1995 - IPC

FIELD: telephone commutation devices. SUBSTANCE: device has n-1 first stage commutation units 1(1)-1(n-1), n-1 second stage commutation units 2(1)-2(n-1), additional commutation unit 3, first stage priority users commutation unit 4, second stage priority users commutation unit 5. System can be used in design of automatic commutation units of medium and small automatic electronic exchange systems. EFFECT: increased service capacity (due to decreased inter-unit blocks) for ordinary users and communication almost without locks for priority users. 1 dwg