A service control point of an intelligent telephone network has an application interface platform for managing a database and a plurality of service application programs. A translation module analyzes a service request message from an originating subscriber and creates a database processing request corresponding to the content of the service request. A database processing module accesses the database based on the database processing request and requests application processing of a particular service application program. An outputted processing module sends a message to the intelligent telephone network based on an outputted processing request from a one of the service application programs. The application interface platform is provided between the plurality of the service application programs and the database. The database processing, application processing and outputted processing requests between two modules or between a module and a service application program are made in a common data format.