Dr. Leo Lehmann Rapporteur ITU-T Q.29/16 Mobility for Multimedia Systems and Services Federal Office of Communication (OFCOM), Switzerland Dr. Lehmann is working as a Senior Technical Expert for Fix and Mobile Networks at the Federal Office of Communication (OFCOM) in Switzerland. Leo represents OFCOM within the Study Group 16 of ITU-T (Multimedia Services) as Rapporteur in the area of Mobility Management (Q.29/16). He takes care on the development of the ITU-T H.5xx series and future developments of Service Mobility within the context of NGN. Furthermore he acts as Liaison Officer of ITU-T Study Group 16 towards ITU Study Groups SG13 (NGN) as well as SG19 (Mobility, Fix/ Mobile Convergence). In 1991 Leo earned his degree of Doctor Electrical Engineering from the University of Erlangen–Nuremberg, Germany. Leo has been working since 16 years in the telecommunication business, being responsible as senior manger and expert for system and network design and engineering. He is member of the Technical Program Committee of “International Conference on Networking and Services (ICNS)” and a frequent speaker at conferences and seminars