Call state processor for a time division switching system

Details Call state processor for a time division switching system Call state processor for a time division switching system

1978-06-05

1980-02-05

Brown, Thomas W.

179 15BA, H04Q 1104

Patent

active

041873998

ABSTRACT:
A semiautonomous digit collection and call state detection subsystem is provided for use in a time division switching system such as a PBX. Each active (call serving) system port circuit applies a hook state signal to a specially provided bus during each occurrence of the time slot to which the port circuit is assigned. The subsystem's logic analyzes these hook state signals to identify certain predetermined call states and to count dial pulses. Output messages representing identified call states and dialed digits are made available to the switching system under control of a system scanner.

REFERENCES:
patent: 3271521 (1966-09-01), Von Sanden et al.
patent: 3420960 (1969-01-01), Jacoby et al.
patent: 3787631 (1974-01-01), Lewis
patent: 3789125 (1974-01-01), Medill et al.
patent: 3789154 (1974-01-01), Medill
patent: 3800094 (1974-03-01), Schwarzer
patent: 3885103 (1975-05-01), Smith et al.
patent: 3908092 (1975-09-01), Hight et al.
patent: 3967072 (1976-06-01), Dimmick et al.
patent: 4061880 (1977-12-01), Collins et al.

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