Tác giả: Henning Schulzrinne

Professor Henning Schulzrinne, Columbia University, USA Henning Schulzrinne has worked on Internet-based emergency calling since 2001, and has helped design the overall emergency calling architecture, the service URN mechanism and the PSAP mapping protocol (Lo ST). Prior to that, he was a long-term participant in the IETF Vo IP-related standardization process, starting with RTP and continuing with Vo IP signaling (SIP). Henning currently teaches networking and related subjects at Columbia University.  He has published numerous journal and conference articles, as well as two books. Henning is a Fellow of the IEEE. Hannes Tschofenig, Nokia Siemens Networks, Finland Hannes Tschofenig has worked on the topic of emergency services for the past 5 years in the area of standardization. He is Chair of the IETF Emergency Context Resolution with Internet Technology (ECRIT) working group with Marc Linsner, and Chair of the European Emergency Number Association (EENA) Next Generation 112 Technical Committee with Roger Hixson (NENA management person).  Hannes and Henning have organized the SDO emergency services workshops with a small group of people, where they have contributed to a number of specifications in this field. Tschofenig has taught courses, and given presentations and tutorials about emergency services to other professionals.