Process for acknowledging calls in a system for wireless staff l

Details Process for acknowledging calls in a system for wireless staff l Process for acknowledging calls in a system for wireless staff l

1975-01-23

1976-08-03

Griffin, Robert L.

Communications: electrical

Land vehicle alarms or indicators

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

325 64, 340312, H04B 504

Patent

active

039732002

ABSTRACT:
In a system for wireless staff location where non-coded acknowledgement signals are transmitted from a called staff locator to identify the staff locator from which the acknowledgement signal is sent which is characterized by the fact that the acknowledgement signal is allotted to the staff locator whose coded call signal was last transmitted.

REFERENCES:
patent: 3210665 (1965-10-01), Street
patent: 3376506 (1968-04-01), Sontag
patent: 3478344 (1969-11-01), Schwitzgebel et al.
patent: 3529243 (1970-09-01), Reindl
patent: 3678391 (1972-07-01), Gough
patent: 3798545 (1974-03-01), Schultz et al.
patent: 3858212 (1974-12-01), Tompkins et al.

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