Call monitor for telecommunication exchange

Details Call monitor for telecommunication exchange Call monitor for telecommunication exchange

1975-04-28

1976-09-14

Brown, Thomas W.

179 18FG, H04J 314

Patent

active

039808335

ABSTRACT:
A call monitor for a telephone exchange, including a processor intervening in the establishment of a connection between associated line links with the aid of a switching network, comprises a first memory storing information about each line link and a second memory containing codes that identify all possible states of a connection of interest to the processor along with all intervening conditions termed evolutions. During a time slot allocated to a particular line link, a multibit comparator receives data from the first memory concerning a connection involving that line link, along with updating information from the line link itself, on one set of inputs and further receives, on another set of inputs, a succession of evolutionary codes read out from the second memory until a match is detected; the read-out is then terminated and an instruction, if required, is sent to the processor and/or to the switching network.

REFERENCES:
patent: 3546388 (1970-12-01), Kobus et al.
patent: 3673340 (1972-06-01), Casella et al.
patent: 3908092 (1975-09-01), Hight et al.

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