Service control in a telecommunications network

(57) Summary book invention relates to the service control in the telecommunication network equipped with the server (SP) which provides service for a customer terminal (CT) and a customer. Service is provided by transmitting information to a customer terminal, and a customer makes payment to service by transmitting a payment message. In order to attain the flexible control system for controlling offer of service, a system maintains the control parameter for which a value depends on the time which made time when (1) service price and a service price change, payment (2) Made, and payment. The value of a control parameter is compared with a スレッシュ hold (TT), and offer of service is suspended when the value of a control parameter reaches a スレッシュ hold.