D-1
D-2
.................................................................................................................................................................... 68
D-3
System or device ................................................................................................................................................... 69
Network configuration ....................................................................................................................................... 69
Physical layer .......................................................................................................................................................... 70
Link layer .................................................................................................................................................................. 71
Application layer ................................................................................................................................................... 72
Basic Application Functions ............................................................................................................................. 80
GFK-2949C
............................................................................................................................ 66
.............................................................................................................................................................. 67
............................................................................................................................................................... 69
Contents
iii