Table of contents 1 INTRODUCTION .......................................................................................................................................................... 8 1.1 Scope ............................................................................................................................................................ 8 1.2 References.................................................................................................................................................... 8 1.3 Definitions and acronyms............................................................................................................................ 10 1.3.1 Shall/should/may/might word usage .............................................................................................. 10 1.3.2 Conventions ................................................................................................................................... 10 1.3.3 Abbreviations and acronyms.......................................................................................................... 11 1.3.4 Definitions ...................................................................................................................................... 12 1.3.5 Symbols ......................................................................................................................................... 13 1.4 Architecture ................................................................................................................................................. 14 1.5 Device roles ................................................................................................................................................ 14 1.5.1 Authentication roles........................................................................................................................ 14 1.5.2 Configurator delegation..................................................................