| 摘要 |
A non-billing instruction function terminates a transmission of billing source information for a billing process to a billing server, and when a PB receiving function detects switching of the content of a telephone call while the connection of a call is maintained, a billing source information transmitting function transmits the billing source information to the billing server. This eliminates an occasion that a service is applied or is not applied depending on an operation given by a user, thereby providing the service equally. |
