Event monitoring transceiver

Details Event monitoring transceiver Event monitoring transceiver

H - Electricity

04

M

354/222

H04M 15/18 (2006.01)

Patent

CA 1051557

ABSTRACT OF THE DISCLOSURE A data terminal utilizes a time division multiplexer to monitor traffic on up to 8000 input lines in banks of 1000 lines and converts the information in each bank from parallel to serial form as 1000 serial 112 bit parallel words, records the various kinds of event count data and usage time duration for each input line, and under interrogation by a control center transmits the accumulated data. The terminal has up to eight serial synchronously operating memory banks, one for each bank of 1000 lines, each memory bank containing an accumulating memory which counts the events as they occur and a passive memory which upon command receives data from the accumulating memory. Data in any passive memory may be read out of the terminal on command from a remote supervising unit. Accumulation operation of the terminal is automatic, and data read out and subsequent clearing of the memories is controlled by the remote supervising unit. The condition of each line is examined continuously cyclically to determine the presence or absence of specifically different particular events and the durations of such events. The accumulated data is usable directly for billing pur- poses when the apparatus is used to monitor telephone subscriber lines. A processing verifier generates test signals and processes them through the apparatus to determine the functional accuracy or the apparatus, and generates an alarm when a malfunction is detected.

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