Abstract: A new method of charging enhanced service provider (ESP) fees on phone bills of telephone numbers originating seven digit 555 number calls within the Public Switched Telephone Network (PSTN). The Local Exchange Carrier routes the call to the PSTN which translates a dialed 7-digit 555 number into a ten-digit phantom routing number and then passes the call to the carrier assigned the ten-digit routing plan. Translation is performed as a look-up in a database, i.e., the Service Management System (SMS). The SMS is used for 800-number translation and was not heretofore available to ESPs. This novel use of PSTN facilities enables the system to provide caller dialed number and billing information on a real-time basis (during call processing). It signals the billing and caller dialed number information in the voice channel (In-Band) during setup of calls to connecting carriers.