Alarm arrangement for a time-division multiplex, pulse-code...

Details Alarm arrangement for a time-division multiplex, pulse-code... Alarm arrangement for a time-division multiplex, pulse-code...

H - Electricity

04

J

363/14

H04J 3/14 (2006.01) H04J 3/12 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 1038092

ABSTRACT OF THE DISCLOSURE In a multi-channel, time-division multiplex, pulse-code modulation system, sequential pulses from each channel comprise a frame, and a predetermined number of frames comprise a superframe. In the system, signals are provided in place of selected pulses to indicate which channels are idle and which channels are busy. An additional function or feature is provided by transmitting alarm signals, representing selected alarm conditions, over selected channels in a selected frame when the selected channels are idle. Received alarm signals may be used to provide any desired indication or function.

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