A method for processing the payment of a bill in the bill payment service can include detecting within a PSTN an attempt to establish a telephone call between a caller and a call center configured to process bill payments. An identity for the calling party can be resolved externally to the call center. Also, a telephonic connection can be established between the caller and the call center. Finally, the resolved identity can be forwarded to the call center over a data communications link which is separate and apart from the established telephonic connection. Preferably, the resolving step can include querying a LIDB through a name resolution adapter disposed in the PSTN for identifying information for the caller. Moreover, the resolving step can be performed responsive to receiving an SS7 message in an SCP to set up the telephonic connection between the caller and the call center.