Patent ID: 7212621

Claim:
A telecommunications system comprising: a switching point for triggering at least one controlling service of a plurality of controlling services for a communication; and a service manager connected to the switching point, said service manager being arranged to invoke said at least one controlling service and to determine based on information relating to control types required for said communication by said at least two controlling services if at least two controlling services of said plurality of controlling services can be provided for said communication, wherein a new controlling service can be started only if the one or more control types required for said communication by said new controlling service are not already reserved by a previously invoked controlling service, wherein a fixed set of control types are defined for the new controlling service, and wherein the information relating to the one or more control types required for said communication by the new controlling service includes information as to which one or more of said fixed set of control types are required for said communication, and is at least partly based on a response or responses given by the new controlling service during the invoking thereof.