1 移动呼叫电信，主叫提示对方正在通话中，请稍后再拨
网络问题。
在有问题的那通电话前的一通电话，
主叫07:00:24.378 [0x156E] IMS SIP Message挂断电话。
Version = 1
Version 1 {
Direction = NETWORK_TO_UE
SDP Presence = 0
SIP Call ID Length = 60
SIP Message Length = 516
SIP Message Logged Bytes = 517
Message ID = IMS_SIP_INVITE
Response Code = REQUEST_TERMINATED (487)
被叫07:00:18 回铃音。
07:00:18.792 [0x156E] IMS SIP Message
Version = 1
Version 1 {
Direction = UE_TO_NETWORK
SDP Presence = 0
SIP Call ID Length = 40
SIP Message Length = 756
SIP Message Logged Bytes = 757
Message ID = IMS_SIP_INVITE
Response Code = RINGING (180)
但被叫在收到来电通知后并没有收到网络的挂断信令。直到30s超时，被叫主动联系网络，网络才挂断电话
[0x156E] OTA LOG 07:00:18.776 IMS SIP Message Length: 748
[0x156E] OTA LOG 07:00:18.785 IMS SIP Message Length: 644
[0x156E] OTA LOG 07:00:18.792 IMS SIP Message Length: 829
[0x156E] OTA LOG 07:00:38.505 IMS SIP Message Length: 904
[0x1830] OTA LOG 07:00:38.510 IMS VoLTE Session Setup Length: 194
[0x156E] OTA LOG 07:00:38.648 IMS SIP Message Length: 627
[0x1831] OTA LOG 07:00:40.704 IMS VoLTE Session End Length: 194
[0x156E] OTA LOG 07:00:40.711 IMS SIP Message Length: 1072
[0x156E] OTA LOG 07:00:40.816 IMS SIP Message Length: 419
[0x156E] OTA LOG 07:00:38.505 IMS SIP Message Length: 904
被叫主动联系网络
07:00:38.505 [0x156E] IMS SIP Message
Version = 1
Version 1 {
Direction = UE_TO_NETWORK
SDP Presence = 0
SIP Call ID Length = 40
SIP Message Length = 831
SIP Message Logged Bytes = 832
Message ID = IMS_SIP_INVITE
网络回复主叫挂断End Cause = MO initiated
07:00:40.704 [0x1831] IMS VoLTE Session End
Version = 2
Version 2 {
Dialled String Length = 49
Dialled String = sip:[240e:57d:605:8242:ea55:1df9:2cd0:3f9b]:40581
Direction = MT
Call Id Length = 39
Call Id = HO4dCNWeUURRZ1g2-2XOmZ3Nkik4hahi@zteims
Type = 0
Originating Uri Length = 18
Originating Uri = tel:+8613924668527
Terminating Uri Length = 55
Terminating Uri = sip:+8619926652625@gd.ims.mnc011.mcc460.3gppnetwork.org
End Cause = MO initiated
Call Setup Delay = 0
Rat = DCM_RAT_LTE
}
所以由于此时被叫侧网络并没有挂断电话，所以 主叫07:00:33.823 [0x156E] IMS SIP Message的电话提示通话中。
Version = 1
Version 1 {
Direction = UE_TO_NETWORK
SDP Presence = 1
SIP Call ID Length = 60
SIP Message Length = 2185
SIP Message Logged Bytes = 2186
Message ID = IMS_SIP_INVITE
Response Code = INFORMAL_RESPONSE (0)
2终端呼叫中提示对方已进行来电转接
被叫上一个通话在这个点断开。
02:11:24.810 [0x1831] IMS VoLTE Session End
Version = 2
Version 2 {
Dialled String Length = 88
Dialled String = sip:4e4e06e2-ea57-464c-ae7f-59b07f15de45@[2409:8809:B102:E860:DFEE:A40B:55C7:75E0]:41961
Direction = MT
Call Id Length = 59
Call Id = asbcz9hG4bK152c6o25ge6yyyb7dbedebye4d77eoe73@192.168.218.99
Type = 0
Originating Uri Length = 66
Originating Uri = tel:13670200327;noa=subscriber;srvattri=national;phone-context=+86
Terminating Uri Length = 71
Terminating Uri = sip:+8613902448387@[2409:8019:8430:4300:0000:0000:0000:0000];user=phone
End Cause = MT initiated
Call Setup Delay = 0
Rat = DCM_RAT_LTE
02:11:06（相当于被叫叫的02:11:24时刻）主叫发起断开，断开2s后发起起呼。
被叫断开volte eps beare 后。 TAU发起更新。进入了新的local area。
[0xB0E2] OTA LOG 02:11:24.948 LTE NAS ESM Plain OTA Incoming MessageDeactivate EPS bearer context request Msg
[0xB0E3] OTA LOG 02:11:24.948 LTE NAS ESM Plain OTA Outgoing MessageDeactivate EPS bearer context accept Msg
[0xB0ED] OTA LOG 02:11:25.286 LTE NAS EMM Plain OTA Outgoing MessageTracking area update request Msg
[0xB0EC] OTA LOG 02:11:25.379 LTE NAS EMM Plain OTA Incoming MessageTracking area update accept Msg
[0xB0ED] OTA LOG 02:11:25.381 LTE NAS EMM Plain OTA Outgoing MessageTracking area update complete Msg
在 TAU accept中更新为m_tmsi = 3695963874 (0xdc4beee2)。即11011100 01001011 11101110 11100010
但在后续paging消息的pagingRecordList没有找到此tmsi。
所以网络侧没有向终端发寻呼。网络的问题。
