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有关语音通话信令咨询
今日在使用Pixi4-6 4G机器拨打一次语音通话挂断后,查看log发现语音通话结束存在2条:
2016 Sep 8 09:48:45.622 [4C] 0x713A UMTS UE OTA -- RELEASE
Message Direction = To UE
chan_type = 0 (0x0)
prot_disc_check = 3 (0x3)
trans_id_or_skip_ind = 8 (0x8)
prot_disc = 3 (0x3) (GSM_CALL_CONTROL)
msg_type = 45 (0x2d)
prot
call_ctrl_prot
RELEASE
cause_incl = 0 (0x0)
second_cause_incl = 0 (0x0)
facility_incl = 0 (0x0)
user_user_incl = 0 (0x0)
Length: 19
Header: 13 00 3A 71 4C 50 91 48 62 93 D7 00
Payload: 00 02 00 00 00 83 2D
2016 Sep 8 09:48:46.461 [A0] 0x713A UMTS UE OTA -- RELEASE
Message Direction = To UE
chan_type = 0 (0x0)
prot_disc_check = 3 (0x3)
trans_id_or_skip_ind = 8 (0x8)
prot_disc = 3 (0x3) (GSM_CALL_CONTROL)
msg_type = 45 (0x2d)
prot
call_ctrl_prot
RELEASE
cause_incl = 1 (0x1)
cause
ext = 1 (0x1)
coding_standard = 3 (0x3)
loc = 2 (0x2)
cause_val = 16 (0x10) (Normal call clearing)
num_diag = 0 (0x0)
second_cause_incl = 1 (0x1)
second_cause
ext = 1 (0x1)
coding_standard = 3 (0x3)
loc = 2 (0x2)
cause_val = 102 (0x66) (Recovery on timer expiry)
num_diag = 0 (0x0)
facility_incl = 0 (0x0)
user_user_incl = 0 (0x0)
Length: 27
Header: 1B 00 3A 71 A0 6C 30 4B 62 93 D7 00
Payload: 00 0A 00 00 00 83 2D 08 02 E2 90 08
02 E2 E6
想咨询下这次通话出现这种情况是怎么回事?
初步分析可能是核心网出问题了,也有可能是第一次RELEASE_COMPLETE 没有送到网络。
不知道具体原因有哪些。
提问者: wjh080909 提问时间: 2016-09-09
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