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Volte sRVCC常见log收集

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iyangxin
iyangxin 管理员 83594 楼主
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发表于 2017-4-6 14:43:54
此现象就是最基本的SRVCC 流程， 4G volte 下 当测量到2G的信号更好 而4G不好的时候，网络测主要切换手机到2G下进一步完成通话，当通话完成后，手机会自动重新驻留到4G上

692742, 0, 63423398, 16:05:36:400 2016/08/26, MOD_ERRC_MOB, , TRACE_PEER, [MS->NW] ERRC_MeasurementReport[7] eventB2 GSM ncell[62/43] rslt[-279][0] pcell[38098/128] rslt[-468][-43]
693545, 0, 63424485, 16:05:36:400 2016/08/26, MOD_ERRC_CONN, , TRACE_PEER, [NW->MS] ERRC_MobilityFromEUTRACommand(CSFB:[0],purpose:[MobilityFromEUTRACommand_r8_IEs_purpose_handover_selected],targetRAT:[Handover_targetRAT_Type_geran])
695033, 0, 63426288, 16:05:36:400 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [NW->MS] RR__PHYSICAL_INFORMATION
695041, 0, 63426293, 16:05:36:400 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__HANDOVER_COMPLETE
695233, 0, 63427883, 16:05:36:600 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__GPRS_SUSPEND_REQUEST
700263, 0, 63430984, 16:05:36:800 2016/08/26, MOD_MM, , TRACE_PEER, [NW->MS] MM__TMSI_REALLOCATION_COMMAND
700291, 0, 63430989, 16:05:36:800 2016/08/26, MOD_MM, , TRACE_PEER, [MS->NW] MM__TMSI_REALLOCATION_COMPLETE
707013, 0, 63953195, 16:06:10:179 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__MEASUREMENT_REPORT
707037, 0, 63957878, 16:06:10:428 2016/08/26, MOD_CC, , TRACE_PEER, [NW->MS] CC__DISCONNECT
707053, 0, 63957881, 16:06:10:428 2016/08/26, MOD_CC, , TRACE_PEER, [MS->NW] CC__RELEASE
707214, 0, 63960696, 16:06:10:710 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__MEASUREMENT_REPORT
707232, 0, 63961267, 16:06:10:710 2016/08/26, MOD_CC, , TRACE_PEER, [NW->MS] CC__RELEASE_COMPLETE
707635, 0, 63963142, 16:06:10:945 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [NW->MS] RR__CHANNEL_RELEASE


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 楼主| iyangxin 管理员
沙发
发表于 2017-4-6 14:45:58
在16：05：36 切过来以后 到2G 下
693545, 0, 63424485, 16:05:36:400 2016/08/26, MOD_ERRC_CONN, , TRACE_PEER, [NW->MS] ERRC_MobilityFromEUTRACommand(CSFB:[0],purpose:[MobilityFromEUTRACommand_r8_IEs_purpose_handover_selected],targetRAT:[Handover_targetRAT_Type_geran])
695033, 0, 63426288, 16:05:36:400 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [NW->MS] RR__PHYSICAL_INFORMATION
695041, 0, 63426293, 16:05:36:400 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__HANDOVER_COMPLETE
695233, 0, 63427883, 16:05:36:600 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__GPRS_SUSPEND_REQUEST
700263, 0, 63430984, 16:05:36:800 2016/08/26, MOD_MM, , TRACE_PEER, [NW->MS] MM__TMSI_REALLOCATION_COMMAND
700291, 0, 63430989, 16:05:36:800 2016/08/26, MOD_MM, , TRACE_PEER, [MS->NW] MM__TMSI_REALLOCATION_COMPLETE
703129, 0, 63622602, 16:05:48:970 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__MEASUREMENT_REPORT
703327, 0, 63643870, 16:05:50:447 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [NW->MS] RR__SI_5TER (ARFCN[62], TC[255])
707013, 0, 63953195, 16:06:10:179 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__MEASUREMENT_REPORT
707037, 0, 63957878, 16:06:10:428 2016/08/26, MOD_CC, , TRACE_PEER, [NW->MS] CC__DISCONNECT
707053, 0, 63957881, 16:06:10:428 2016/08/26, MOD_CC, , TRACE_PEER, [MS->NW] CC__RELEASE
707214, 0, 63960696, 16:06:10:710 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [MS->NW] RR__MEASUREMENT_REPORT
707232, 0, 63961267, 16:06:10:710 2016/08/26, MOD_CC, , TRACE_PEER, [NW->MS] CC__RELEASE_COMPLETE
707635, 0, 63963142, 16:06:10:945 2016/08/26, MOD_RRM_TDD, , TRACE_PEER, [NW->MS] RR__CHANNEL_RELEASE//释放以后回4G
在2G IDLE下就不一定回4G了

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 楼主| iyangxin 管理员
板凳
发表于 2017-4-6 14:47:05
[ro.mediatek.version.sdk]: [4]
[ro.mediatek.version.branch]: [alps-mp-m0.mp7]
[ro.mediatek.version.release]: [alps-mp-m0.mp7-V3.28_wt6750.66c.m_P19]
[ro.mediatek.chip_ver]: [S01]
[ro.mediatek.platform]: [MT6755]
// 收到两通来电并Merge为Conference
08-26 16:04:47.394570 2579 2760 V IMS_RILA: [UNSL]< UNSOL_INCOMING_CALL_INDICATION {1, 18587737275, 129, 20, 109, }
08-26 16:04:51.223825 2579 2600 D IMS_RILA: [3684]> ANSWER
08-26 16:04:55.272395 2579 2760 V IMS_RILA: [UNSL]< UNSOL_INCOMING_CALL_INDICATION {2, 15177197364, 129, 20, 110, }
08-26 16:05:04.329682 2579 2594 D IMS_RILA: [3686]> RIL_REQUEST_HOLD_CALL
08-26 16:05:04.737201 2579 2594 D IMS_RILA: [3687]> ANSWER
08-26 16:05:08.799962 2579 10682 D IMS_RILA: [3690]> CONFERENCE
08-26 16:05:08.813107 2579 2579 D ImsCallSessionProxy: IMS: +ECPI : conference assign call id
08-26 16:05:09.992988 2579 2760 D IMS_RILA: [3690]< CONFERENCE

08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: requestId = 900402, length = 896, callId = 3, phoneId = 1, serviceId = 257, data = <?xml version="1.0" encoding="UTF-8"?>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <conference-info
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: xmlns="urn:ietf:params:xml:ns:conference-info"
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: entity="sip:conf=00000005HuaweiATSConf1472227510239911@0.0.0.0"
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: state="full" version="0">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <conference-description>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <maximum-user-count>6</maximum-user-count>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </conference-description>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <users>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <user entity="tel:+8618776923624">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <display-text>+8618776923624</display-text>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <endpoint entity="">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <status>connected</status>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </endpoint>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </user>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <user entity="tel:15177197364">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <display-text>+8615177197364</display-text>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <endpoint entity="sip:0.0.0.0:65535">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <status>connected</status>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </endpoint>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </user>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <user entity="tel:18587737275">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <display-text>+8618587737275</display-text>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <endpoint entity="sip:+8618587737275@0.0.0.0:65535">
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: <status>connected</status>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </endpoint>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </user>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </users>
08-26 16:05:11.291537 2579 2579 D [CallControlDispatcher]: </conference-info>
08-26 16:05:11.294315 2579 2579 D [CallControlDispatcher]: Conference call XML message is sent.

// Conference建立成功
08-26 16:05:12.316120 2918 2918 D InCall : CallList - onUpdate - [Call_16, ACTIVE, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_MANAGE_CONFERENCE CAPABILITY_SUPPORTS_VT_LOCAL_RX CAPABILITY_SUPPORTS_VT_LOCAL_TX CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL CAPABILITY_SUPPORTS_VT_REMOTE_RX CAPABILITY_SUPPORTS_VT_REMOTE_TX CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL], children:[Call_17, Call_18], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)] ph:PhoneAccountHandle{.TelephonyConnectionService, 898600e7201492094397, UserHandle{0}}
08-26 16:05:12.359391 2918 2918 I InCall : CallList - onUpdate - [Call_18, CONFERENCED, [Capabilities: CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:Call_16, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
08-26 16:05:12.448197 2918 2918 D InCall : CallList - onUpdate - [Call_17, CONFERENCED, [Capabilities: CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:Call_16, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)] ph:PhoneAccountHandle{.TelephonyConnectionService, 898600e7201492094397, UserHandle{0}}

// 发生SRVCC
08-26 16:05:37.015242 2548 2931 D RILJ : [UNSL]< UNSOL_SRVCC_STATE_NOTIFY {0} [SUB1]
08-26 16:05:37.339446 2548 2931 D RILJ : [UNSL]< UNSOL_SRVCC_STATE_NOTIFY {1} [SUB1]

// SRVCC之后，所有Call断开
08-26 16:05:38.012849 2918 2918 I InCall : CallList - onDisconnect: [Call_16, DISCONNECTED, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_MANAGE_CONFERENCE CAPABILITY_SUPPORTS_VT_LOCAL_RX CAPABILITY_SUPPORTS_VT_LOCAL_TX CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL CAPABILITY_SUPPORTS_VT_REMOTE_RX CAPABILITY_SUPPORTS_VT_REMOTE_TX CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL], children:[Call_17, Call_18], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
08-26 16:05:38.339932 2918 2918 I InCall : CallList - onDisconnect: [Call_17, DISCONNECTED, [Capabilities: CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
08-26 16:05:38.650801 2918 2918 I InCall : CallList - onDisconnect: [Call_18, DISCONNECTED, [Capabilities: CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]

// UI部分是客制化修改后的。InCallActivity finish掉
08-26 16:05:41.013403 2918 2918 I InCall : CallList - no active call on sub 1
08-26 16:05:41.013432 2918 2918 D InCall : InCallPresenter - Switch active sub. Last disc cause = 4
08-26 16:05:41.014739 2918 2918 I InCall : CallList - no no_disconnect call on sub 0
08-26 16:05:41.031092 2918 2918 I InCall : InCallActivity - finish(). Dialog showing: false
08-26 16:05:41.102547 2918 2918 D InCall : InCallActivity - onPause()...
08-26 16:05:41.462991 2918 2918 D InCall : InCallActivity - onStop()...


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 楼主| iyangxin 管理员
地板
发表于 2017-4-6 14:48:47
VoLTE Conference Call发生SRVCC之后并没有发生自动挂断的问题。信号掉到2G与当时的驻网情况有关，通常属于正常表现

[ro.mediatek.version.sdk]: [4]
[ro.mediatek.version.branch]: [alps-mp-m0.mp7]
[ro.mediatek.version.release]: [alps-mp-m0.mp7-V3.28_wt6750.66c.m_P55]
[ro.mediatek.chip_ver]: [S01]
[ro.mediatek.platform]: [MT6755]
// MT_1
09-18 16:49:36.107239 1847 1878 D AT : AT< +EAIC: 1,"13122774003",129,20,102
09-18 16:49:36.236816 1847 1878 D AT : AT< +ECPI: 1,0,0,1,1,20,"13122774003",129,"<tel:13122774003;noa=subscriber;srvattri=national;phone-context=+86>"
09-18 16:49:40.273740 1847 1878 D AT : AT< +ECPI: 1,132,0,1,1,20,"13122774003",129,"<tel:13122774003;noa=subscriber;srvattri=national;phone-context=+86>"
09-18 16:49:40.284924 1847 1878 D AT : AT< +ECPI: 1,6,0,1,1,20,"13122774003",129,"<tel:13122774003;noa=subscriber;srvattri=national;phone-context=+86>"

// MT_2
09-18 16:49:47.924310 1847 1878 D AT : AT< +EAIC: 2,"13262916750",129,20,103
09-18 16:49:48.077036 1847 1878 D AT : AT< +ECPI: 2,0,0,1,1,20,"13262916750",129,"<tel:13262916750;noa=subscriber;srvattri=national;phone-context=+86>"
09-18 16:49:52.740609 1847 1878 D AT : AT< +ECPI: 1,131,0,1,1,20,"13122774003",129,"<tel:13122774003;noa=subscriber;srvattri=national;phone-context=+86>"
09-18 16:49:52.935205 1847 1878 D AT : AT< +ECPI: 2,132,0,1,1,20,"13262916750",129,"<tel:13262916750;noa=subscriber;srvattri=national;phone-context=+86>"
09-18 16:49:52.950242 1847 1878 D AT : AT< +ECPI: 2,6,0,1,1,20,"13262916750",129,"<tel:13262916750;noa=subscriber;srvattri=national;phone-context=+86>"

// Merge Conference
09-18 16:50:00.065183 1847 1862 D AT : AT> AT+CHLD=3
09-18 16:50:00.070536 1847 1878 D AT : AT< +ECPI: 3,130,0,0,0,22,"",129,""
09-18 16:50:00.522632 1847 1878 D AT : AT< +ECPI: 2,131,0,1,1,20,"13262916750",129,"<tel:13262916750;noa=subscriber;srvattri=national;phone-context=+86>"
09-18 16:50:01.070396 1847 1878 D AT : AT< +ECPI: 3,2,0,1,1,22,"",129,""
09-18 16:50:01.193887 1847 1878 D AT : AT< +ECPI: 3,132,0,1,1,22,"",129,""
09-18 16:50:01.206830 1847 1878 D AT : AT< +ECPI: 3,6,0,1,1,22,"",129,""
09-18 16:50:01.858886 1847 1878 D AT : AT< +ECPI: 1,133,0,1,1,20,"13122774003",129,"<tel:13122774003;noa=subscriber;srvattri=national;phone-context=+86>",16
09-18 16:50:02.428001 1847 1878 D AT : AT< +ECPI: 2,133,0,1,1,20,"13262916750",129,"<tel:13262916750;noa=subscriber;srvattri=national;phone-context=+86>",16

// Srvcc, Ims驻网发生变化，掉到了GSM
09-18 16:51:01.320658 3837 4422 D RILJ : [UNSL]< UNSOL_SRVCC_STATE_NOTIFY {0} [SUB0]
09-18 16:51:01.576982 3837 4422 D RILJ : [UNSL]< UNSOL_SRVCC_STATE_NOTIFY {1} [SUB0]

// 主动挂断电话
09-18 16:55:03.292864 2172 3207 V Telecom : InCallAdapter: disconnectCall: InCall@19
09-18 16:55:03.316488 3837 3837 D RILJ : [6093]> HANGUP_FOREGROUND_RESUME_BACKGROUND [SUB0]
09-18 16:55:03.331946 1847 1862 D AT : AT> AT+CHLD=1
09-18 16:55:03.352078 1847 1878 D AT : AT< +ECPI: 1,134,1,1,255,255,"",,""
09-18 16:55:03.352812 1847 1878 D AT : AT< +ECPI: 3,134,1,1,255,255,"",,""
09-18 16:55:03.528906 1847 1878 D AT : AT< +ECPI: 1,1,0,1,255,255,"",,"",81
09-18 16:55:03.530140 1847 1878 D AT : AT< +ECPI: 1,133,0,0,0,0,"",,"",81
09-18 16:55:03.651036 1847 1878 D AT : AT< +ECPI: 3,1,0,0,255,255,"",,"",16
09-18 16:55:03.653467 1847 1878 D AT : AT< +ECPI: 3,129,0,0,255,255,"",,"",0
09-18 16:55:03.654590 1847 1878 D AT : AT< +ECPI: 3,133,0,0,0,0,"",129,"",16

// InCallUI, SRVCC之后电话成功转移为GSM Call并没有断开
09-18 16:51:09.220941 5742 5742 I InCall : CallList - onUpdate - [Call_15, CONFERENCED, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_VOICE_RECORD CAPABILITY_SEPARATE_FROM_CONFERENCE CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:Call_12, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
09-18 16:51:09.315843 5742 5742 I InCall : CallList - onUpdate - [Call_14, CONFERENCED, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_VOICE_RECORD CAPABILITY_SEPARATE_FROM_CONFERENCE CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:Call_12, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
09-18 16:51:09.408696 5742 5742 I InCall : CallList - onUpdate - [Call_12, ACTIVE, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_MANAGE_CONFERENCE CAPABILITY_SUPPORTS_VT_LOCAL_RX CAPABILITY_SUPPORTS_VT_LOCAL_TX CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL CAPABILITY_VOICE_RECORD CAPABILITY_INVITE_PARTICIPANTS], children:[Call_15, Call_14], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]

// 主动挂断电话之后，所有Call均断开
09-18 16:55:03.166218 5742 5742 I InCall : CallList - onUpdate - [Call_12, DISCONNECTING, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_MANAGE_CONFERENCE CAPABILITY_SUPPORTS_VT_LOCAL_RX CAPABILITY_SUPPORTS_VT_LOCAL_TX CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL CAPABILITY_VOICE_RECORD CAPABILITY_INVITE_PARTICIPANTS], children:[Call_15, Call_14], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
09-18 16:55:05.698505 5742 5742 I InCall : CallList - onUpdate - [Call_12, DISCONNECTED, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_MANAGE_CONFERENCE CAPABILITY_SUPPORTS_VT_LOCAL_RX CAPABILITY_SUPPORTS_VT_LOCAL_TX CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL CAPABILITY_INVITE_PARTICIPANTS], children:[], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
09-18 16:55:06.247258 5742 5742 I InCall : CallList - onUpdate - [Call_14, DISCONNECTED, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_SEPARATE_FROM_CONFERENCE CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]
09-18 16:55:06.339508 5742 5742 I InCall : CallList - onUpdate - [Call_15, DISCONNECTED, [Capabilities: CAPABILITY_HOLD CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_SEPARATE_FROM_CONFERENCE CAPABILITY_DISCONNECT_FROM_CONFERENCE], children:[], parent:null, conferenceable:[], videoState:Audio Only, mSessionModificationState:0, VideoSettings:(CameraDir:-1)]


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 楼主| iyangxin 管理员
5#
发表于 2017-4-6 15:02:55
由于触发了pre-alerting SRVCC，但是当前网络不支持pre-alerting SRVCC，即在响铃之前的SRVCC，所以当满足pre-alerting SRVCC的时候，UE认为网络不支持，就直接断call；
属于正常现象；

06-24 12:21:41.084810 10494 10521 I VoLTE_Auto_Testing: [0][acct] event/recv/srvcc/start
06-24 12:21:41.199680 10494 10521 I VoLTE_Auto_Testing: [0][call] msg/send/0/1/req/4

网络发过来的183中 Feature-Caps: *;+g.3gpp.srvcc;+g.3gpp.mid-call;+g.3gpp.srvcc-alerting，表示支持active call，hold call，alerting call的SRVCC，pre-alerting的没有带，说明不支持；
06-24 12:21:38.552932 10493 10508 D VoLTE SIPTX: [SIPTX-IO] Recv SIP (2409:8010:9210:1:1002:1002::: 9900 )[262146:2490391] <== { SIP/2.0 183 Session Progress }
06-24 12:21:38.562038 10493 10508 D VoLTE SIPTX: [SIPTX-SIP] <== Feature-Caps: *;+g.3gpp.srvcc;+g.3gpp.mid-call;+g.3gpp.srvcc-alerting
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