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.

Abstract: For use with a telephone system serving a plurality of stations, method and apparatus is disclosed for providing a plurality of special services by designating a memory dedicated to a particular station for a selected one of the services on a per call basis. Responsive to a call between a particular one and a specific calling/called one of the stations, a memory dedicated to the particular station is designated for a selected calling/called station special service. The directory number of the specific calling/called station is also stored in the designated memory for subsequently activating the selected service. Responsive to a predetermined activation code entered at the paticular station, the selected special sevice is activated using the stored directory number of the specific calling/called station. When the specific station is in a busy condition, completion of the selected special service is delayed until both the particular and the specific stations are in an idle condition.