Development of packet-switched data communication networking technologies has been rapid in recent years, a phenomenon made possible by the open standardization process and the potential new territories for intellectual property creation. As a consequence, new ways of creating services have been devised, bringing more flexibility as compared to traditional telecommunications schemes. Such possibilities bring certain consequences with them – since services as such are no longer necessarily standardized and can be created rapidly, tailoring them to different access technologies is less feasible | Brought to You by Like the book Buy it IP NETWORKS Vilho Raisanen Implementing Service Quality in IP .