CREDIT TELEPHONE METHOD

摘要

The method imposes call charge on credit number input by a user using a service switching point. The method comprises the steps: (A) checking the credit number and the secret number which are received by a service switching point (SSP); (B) sending information of the call request from a SSP to a service control point (SCP) using No.7 protocol and inspecting the information by a SCP; (C) forming a loop to a receiver and imposing a call charge; and (D) calculating the sum of call charges which are imposed during a certain period.