1. A communication network, said network comprising at least an application server means ( 1 ), a subscriber information register means ( 6 ), a call state control functional entity ( 7 ), and a service portal ( 2 ), wherein said application server means ( 1 ) is connected to said service portal ( 2 ) and to said call state control functional entity ( 7 ), said service portal ( 2 ) is further connected to said subscriber information register means ( 6 ), and said subscriber information register means ( 6 ) is further connected to said call state control functional entity ( 7 ), wherein said application server means ( 1 ) comprises a script management functional entity ( 1 A), and said script management functional entity ( 1 A) is adapted to manage service in a script database ( 1 B) of said application server means ( 1 ), which script database is adapted to store master copies of service scripts, wherein said managing functionality comprises at least one of the following functionalities: create, receive, test, check, validate, distribute and modify.