NS Security Acknowledgement: the cooperation with my daughter Helena Andersson on IT security has been very valuable. Many thanks! Helena is researching IT security from a legal point of view and will produce her thesis on that subject. Säkerhet vid tradlos datakommunikation. SIG Security Studentlitteratur 2001. Handbook i IT-säkerhet. Predrag Mitrovic.pagina.se. Communications Security in an all-IP world. Ericsson Review, 2, 2000. Johan Gustafson: Kroppen som lösenord. Nätverk och Kommunikation, September, 2000. Intermec White Paper on wireless security. http://epsfiles.intermec.com/eps_files/eps_wp/WirelessSecureWPWEB.pdf Quality of Service UMTS Quality of Service (QoS) - An End-to-End View. Brad Stinson, Narayan Paramesh- war, Ramki Rajagopalan. See: http://www.awardsolutions.com/downloads/Award_solutions_UMTS_QoS_wcnc1.3_ (0801).pdf The challenges of voice-over-IP-over-wireless. Ericsson Review, 1, 2000. References and Acknowledgements Interconnect Interconnect acknowledgement: the cooperation with Hakan Äkerstedt, who participated in a group for interconnection within the European Commission, has been valuable. Hakan has in addition written the appendices on MGW dimensioning and development tracks. Implementation Structure The network structure applied in the book is called the all-access architecture, supposing a fairly complete convergence except for the access area. The convergence is partly based on layering and horizontalization. This does not mean that such development is the obvious short-term one. With the present circuit-mode voice networks still being a cash-cow, there are strong conservative forces advocating a limited convergence, initially, for economical reasons. Some references and acknowledgements are: The stupid network. David Isenberg. See: http://www.camworld.com/att.html. Cooperation with Hakan Wolf who participated in ACTS (Advanced Communication Technologies and Services) Program of the European Commission CONVAIR Project. http://www.etic.be/convair/Documents/teams-cv.pdf Building the G