15 L 39 39 41 Local events 40 21 42 17 45 23 43 22 ms-call-source ( 19, 20) 20 19 21 19 24 19 19 20 20 M 20 19 Message processing 15 21 33 17 33 23 34 22 35 20 33 20 34 24 35 23 ms-early-media 19 20 14 20 Messages 20 15 21 14 20 15 21 15 20 15 15 15 35 16 35 16 36 14 37 14 38 14 36 22 24 22 24 23 24 23 initialization ( 24, 59) 23 24 23 24 23 24 23 24 15 16 46 55 46 56 48 57 46 56 49 23 52 23 49 23 21 23 22 24 example 23 39 23 42 23 22 16 22 52 22 53 22 53 22 54 22
L Local events 21 17 23 22 20 21 24 19 M Message processing 21 17 23 22 20 20 24 23 19 14 Messages 15 14 15 15 15 15 16 16 14 14 14 22 22 23 23 23 23 23 23 15 46 46 48 46 49 52 49 21 22 example 39 42 22 22 22 22 22 22 15 39 39 41 40 42 45 43 ms-call-source ( 19, 20) 19 19 19 20 20 20 19 15 33 33 34 35 33 34 35 ms-early-media 20 20 20 21 20 21 20 15 35 35 36 37 38 36 24 24 24 initialization ( 24, 59) 24 24 24 24 16 55 56 57 56 23 23 23 23 24 23 23 23 16 52 53 53 54