METHOD OF AND DEVICE FOR AUTOMATIC SWITCHING IN COMMUNICATION LINE Russian patent published in 1995 - IPC

FIELD: telephone communications. SUBSTANCE: system has one switching unit, N digital-information user terminals, K analog-information switching terminals, 2m data transmission channels, 2n analog information channels, one station computer, (N+K+2n+2n+1) interface units, (N+K+2n+2m+1) data-transmission equipment sets of station, (N+K+2n+2m+1) communication lines of interface units for standard sets of data-transmission equipment, (N+K) communication of lines for data-transmission equipment sets of station with remote data-transmission equipment, one physical-channels switch control channel, (N+K) remote data-transmission equipment sets, one peripheral data-transmission equipment set, K analog-information terminal-to-physical-channel switch communication lines, one physical switch channel, one peripheral data transmission equipment set-to-physical-channel switch communication line, N digital-information user terminal-to-remote data-transmission equipment sets communication lines, K switching terminal-to-remote data-transmission equipment sets communication lines. EFFECT: improved utilization efficiency of communication lines due to provision for transmission of priority groups of analog information over sonic-frequency channels as well as introduction of additional physical-channel switch and analysis of speech, agreement, and disconnection flags in line units. 2 cl, 23 dwg