信令网_gsm主叫信令流程图_被叫信令(3)

OS RAS Cause: n/a

5 CHI(Channel Info 信道信息) 1 2 74 41791 14101 -1 1 64 13 5 74

1 2 74 41791 14101 -1 1 64 13 5 74

Channel Type Carrier Number Cell Id LAC RLT Extended Channel TypeTimeslot BCCH

1 = control channel

2 = traffic channel

载频

频点 小区 位置区 -1 = Not Available

1 = BCCH

2 = CCCH

3 = CBCH

4 = SDCCH

5 = RACH

10 = TCH half rate, first half

11 = TCH half rate, second half

12 = TCH full rate

13 = TCH enhanced full rate

14 = TCH full rate, 14,4kbs data

15 = TCH full rate, 9,6kbs data

16 = TCH full rate, 7,2kbs data

17 = TCH full rate, 4,8kbs data

18 = TCH full rate, 2,4kbs data

19 = TCH half rate, 4,8kbs data, first half

20 = TCH half rate, 4,8kbs data, second half

21 = TCH half rate, 2,4kbs data, first half

22 = TCH half rate, 2,4kbs data, second half

23 = TCH full rate FACCH

24 = TCH half rate FACCH, first half

25 = TCH half rate FACCH, second half

26 = AFS (Adaptive full rate speech)

27 = AHS (Adaptive half rate speech)

50 = PBCCH

51 = PCCCH

60 = PDTCH 时隙 频点

6 CI(Carrier Interference C/I，载干比) 1 21 0

Channel C/I: 21.8 第二项

7 HOF(Handover Failure切换失败)

8 L3U (Layer 3 Uplink) RACH CHANNEL REQUEST 46

Originating Speech Call Location Update Answer to Paging

40,41,42,43,44,45,46,47,48,

49,4A,4B,4C,4D,4E,4F,E7 01,02,03,04,05,06,07,08,

09,0A,0B,0C,0D,0E,0F 31,32,33,34,35,36,37,38,

39,3A,3B,3C,3D,3E,3F

§2 正常信令流程

§2.1 呼叫建立及主叫释放信令流程

Mobile originating call establishment

a) Call clearing initiated by the network

b）Call clearing initiated by the MS

1 Call Attempt 18:52:13.947（CAA）呼叫尝试

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