Dr Leo Lehmann is working at the Federal Office of Communication (OFCOM) in Switzerland, taking care on the regulation of mobile and fixed/mobile converged networks. Since October 2008 Leo serves the ITU-T as vice-chairman of Study Group 13 (Future networks including mobile and NGN). Afore he was the Rapporteur on “multimedia service mobility management” in the ITU-T Study Group 16 (Multimedia Services) for many years. Leo has been working since 22 years in the telecommunication business, being responsible as senior manager and expert for network system design and engineering at mayor players of the telecommunication market. As designated expert on Next Generation Networks and Future Networks including multimedia he has contributed to many ITU conferences and workshops. He is one of the winners of the best paper award of the ITU-T Kaleidoscope event 2011“The fully networked human? − Innovations for future networks and services”.