VPMN用户呼叫诺西HSSVOLTE用户被叫回落案例 图文.docx

VPMN用户呼叫诺西HSSVOLTE用户被叫回落案例_图文.docx案例4:河南省・IMS-n月-诺西MSS下2/3GVPMN用户呼叫诺西HSSVOLTE用户被叫回落案例1家诺基叩问题编设备类型MSS问题类型厂家配合问题问题影响Volte用户被叫回落问题状态暂时解决,待最终解决方案上报省份河南上报时间2015-11-20上报人刘遂江问题描述2/3G的VPMN用户在诺四端局下呼叫长途诺四HSS中开户的VOLTE用户被叫回落,呼叫华为HSS中开户的VOLTE用户被叫不回落原因定位问题原因:-IMS侧分析1、 SBC收到CSCF的invite消息SeqNO:1,PE1&Time:2015-11-1713:30:52,RECEIVEDSender<->Receiver::5099<—>:5060INVITEsip:460020603456442@[2409:8808:225:38b::l]:6000SIP/、 SBC向终端连续3次转发invite消息,终端无响应第一次:SeqNO:3,PE1&Time:2015-11-1713:30:52,SENDSender<->Receiver:[2409:8018:800:8::1:40):5063<-->[2409:8808:225:38b::1J:6OOOINVITEsip:460020603456442@[2409:8808:225:38b::l]:6000SIP/:SeqNO:4,PE18,Time:2015-11-1713:30:52,SENDSender<->Receiver:[2409:8018:800:8::l:40]:5063<-->[2409:8808:225:38b::1]:6000INVITEsip:460020603456442@[2409:8808:225:38b::l]:6000SIP/:SeqNO:5,PEI8,Time:2015-11-1713:30:53,SENDSender<->Receiver:[2409:801&800:&:l:40]:5063<-->[2409:8808:225:38b::l]:6000INVITEsip:460020603456442@[2409:8808:225:38b::l]:6000SIP/:SeqNO:6,PEI8,Time:2015-11-1713:30:55,SENDSender<->Receiver:[2409:8018:800:8::1:401:5063<-->[2409:8808:225:38b::1]:6000INVITEsip:460020603456442@[2409:8808:225:38b::l]:6000SIP/,SBC直接回503释放呼叫SeqNO:7,PEI8,Time:2015-l1-1713:30:57,SENDSender<->Receiver::5060<-->:5099SIP/、 AS收到SBC的503失败后,重新触发取CSRN的流程,::5171lOOflNVITE)SIP/