A method, system and apparatus for processing bill payments in a PSTN. The method of the invention can include, responsive to answering a telephone call from a caller over the PSTN, identifying the caller from a data communications source external to the telephone call and retrieving billing information for the identified caller. Once the billing information has been retrieved for the identified caller, the payment of a bill can be processed based upon the billing information. In a preferred aspect of the invention, the identifying step can include identifying the caller based upon identifying information for the caller received through a data communications link from a name resolution adapter disposed within the PSTN. For instance, the identifying step can include identifying the caller based upon identifying information retrieved from a LIDB and transmitted by the name resolution adapter.