| 摘要 |
<p>For use with a telephone system (100) having a communications terminal (181) and serving a plurality of station, method and apparatus for providing a customer-originated call tracing service on a per call basis. Responsive to a call from a calling station (102) to a called station (170), a memory dedicated to the called station (Fig. 7) stores (207) the directory number of the calling station. An indicator bit associated with the memory designated (207) 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 (203) a predetermined access code after the call to send (212) 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 (404) 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. (Fig. 1)</p> |
