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Computer controlled switching system using flip-flops for control of repetitive operations
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Switches with selection by co-ordinates
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Telephone switching systems
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Magnetic core scanning circuitry
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Device for selectively actuating switching network electromagnetic relays
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Crossbar crosspoint matrix with vibration damping means
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Telephone switching system with independent signalling channels employing time-division multiplex
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Telephone switching unit with local and remote computer control
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Conditional stored program computer for controlling switching networks
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Automatic switching system comprising direct and mutual-aid routes between selection units
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Fast access system to magnetic drum memories
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Remote stage switching network
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Telephone traffic concentrator
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Switching network
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Remote line concentrator
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Remote line concentrator
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CA730297A
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Fast access system to magnetic drum memories
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CA782653A
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Co-ordinate selection switches
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