Method and apparatus for providing call tracing service

Details Method and apparatus for providing call tracing service Method and apparatus for providing call tracing service

1983-07-12

1986-05-27

Brown, Thomas W.

179 55, H04M 157, H04Q 372

Patent

active

045916659

ABSTRACT:
For use with a telephone system having a communications terminal and serving a plurality of stations, method and apparatus is disclosed for providing a customer-originated call tracing service on a per call basis. Responsive to a call from a calling station to a called station, a memory dedicated to the called station stores the directory number of the calling station. An indicator bit associated with the memory designates the stored directory number as that of a "calling" station. Receiving, for example, a nuisance or obscene call, the customer at the called station enters a predetermined access code after the call to send the designated directory number of the calling station as well as the called station directory number to the communications terminal for subsequent follow up by appropriate personnel. Several calling station directory numbers may be stored in the memory for subsequent display at the called station. In such case, the called customer may first choose the directory number of the nuisance caller, particularly, when the called customer receives a large number of calls during a relatively short period of time.

REFERENCES:
patent: 3546389 (1970-12-01), DeRaedt et al.
patent: 4277649 (1981-07-01), Sheinbein
patent: 4310726 (1982-01-01), Asmuth
patent: 4355207 (1982-10-01), Curtin
patent: 4445001 (1984-04-01), Bertoglio

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