Preference access circuit

Details Preference access circuit Preference access circuit

1975-06-16

1976-10-12

Robinson, Thomas A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340147LP, H04Q 347

Patent

active

039859738

ABSTRACT:
A buffer circuit is disclosed as part of a centralized subsystem in a telephone switching system. The subsystem performs all functions heretofore performed by individual originating registers and communicates with office pretranslators for effecting digit pretranslation. The buffer circuit interfaces a computer of the subsystem with a conventional pretranslator connector for obtaining access to the office pretranslators preferentially over originating registers which are competing for the pretranslators. In response to a single call, the buffer applies a bid for service to each of a plurality of pretranslator connector subgroups in contrast with a bid to a single subgroup from each originating register. In the event the computer receives overlapping calls, the buffer circuit holds the multiple bids for service to preserve their priority status in the queues of the connector subgroups.

REFERENCES:
patent: 2945917 (1960-07-01), Clark et al.
patent: 3300758 (1967-01-01), Hawley, Jr.
patent: 3670109 (1972-06-01), Leyburn et al.

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