Abstract: A method for identifying new customers or recently changed telephone services is disclosed. The methodology discovers systems and methods for capturing telephone numbers that appear on the records of recent telephone calls of a communications network, which can or cannot be a network customer, and categorizing the telephone number as a known telephone number or an unknown telephone number. The methodology includes looking-up a name and address for telephone numbers, which are categorized as unknown telephone numbers, in a current directory service. A comparison can be performed using the looked-up name and address from the current directory service with names and addresses in a historical data source. If the looked-up name and address from the current directory service differ from name and address in the historical data source, the unknown telephone number is identified as a new customer or a recently changed telephone service.

Abstract: A system and method for offering a service upgrade to a service user. The system includes a server that monitors utilization by the user and evaluates the user's utilization pattern to determine which, if any, service upgrades may be appropriate for the user. Once a set of candidate service upgrades has been identified, the server then determines whether there is sufficient available capacity to accommodate the provision of such additional services. If such capacity exists, the user is offered the service upgrade. Since the offer is not made unless there is shown to be sufficient available capacity, once the offer is made, the system is able to implement the upgrade in real time with the user's approval.

Abstract: A power switching circuit for switching power repetitively to a load at a relatively low frequency employs a power switching device which is driven across an isolating transformer interface. The drive signals are high frequency pulse signals which are modulated with the low frequency switching information, the modulations being detected in the secondary circuit of the transformer. Such an arrangement affords isolated driving with fast switching edges and requires only a small transformer. Power for the detection circuit is derived by rectification of the high frequency signals induced in the transformer secondary.

Abstract: A single phase induction motor control system employs power line assisted starting and runs at higher than power line frequency from an electronically generated inverter supply. This inverter supply is employed to provide an out of phase mains frequency signal to the run winding during starting in order to create the rotating magnetic field needed to start the motor. After the motor has started, the power line supply is disconnected from the start winding and the inverter supply frequency is increased gradually to a final value corresponding to the desired operating speed. In this system no phase shifting capacitors are needed to provide the out of phase starting voltage and the run winding is optimized for running conditions.