3.1
........................................................... 20
3.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.4
3.5
3.6
........................................................ 29
3.7
3.8
4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.2
4.3
.......................................................... 45
4.3.1
SMS...........................................................46
MMS ..........................................................56
4.3.2
4.3.3
........................................... 23
..................................................... 25
............................................. 28
................................................. 28
................................................... 29
..................................................... 29
............................................... 32
.......................... 40
3