Patent US 5,594,902

In a custom service control system connected to a communication system including a plurality of user terminals and an exchange, a first memory stores service management processes respectively provided for the user terminals. A second memory stores a plurality of service processes respectively providing communications services. The service management processes includes pieces of custom data showing service processes respectively usable by the user terminals. A control unit selects service processes in response to requests from the user terminals in accordance with the service management processes.