GSM - Architecture, Protocols and Services, 3rd Edition

Jörg Eberspächer is head of the Institute of Communication Networks at the Technische Universität München (TUM). His current research interests are high-speed and fault-tolerant communication networks: photonic networks, next generation QoS Internet, mobile networks and multimedia services.

Hans-Jörg Vögel is currently product manager for The Fantastic Corporation, where he is responsible for designing and developing new products, solutions and services in the field of broadband and mobile multimedia.

Christian Bettstetter received a Dipl-Ing degree in electrical engineering and information technology from TUM in 1998 and has since held various research posts. His current areas of interest include ad hoc networking, mobile Internet and mobility management.

Christian Hartmann is also affiliated to the Technische Universität in München. He has extensive experience in the field of telecommunications.