VoLTE呼叫SIP信令分析

文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第1页,共18页VoLTE呼叫SIP信令分析VoLTE主叫与网络侧交互流程文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第2页,共18页11INVITE/**UE向网侧发起INVITE请求，sip:[e-mail]是IMPU18801200325是被叫的号码，SIP/2.0是协议版本号*/INVITEsip:[e-mail];user=phoneSIP/2.0/**电话是18813050064呼出的,*/From:sip:[e-mail];tag=ccecbow/**被叫电话是18801200325*/To:18801200325sip:[e-mail];user=phoneP-Preferred-Identity:sip:[e-mail]:sip:460602013050064@192.168.57.10:5060;+sip.instance=urn:gsma:imei:86527602-000237-4;+g.3gpp.icsi-ref=urn%%3Aurn-7%%3A3gpp-service.ims.icsi.mmtel;+g.3gpp.mid-call;+g.3gpp.srvcc-alerting;videoAccept-Contact:*;+g.3gpp.icsi-ref=urn%%3Aurn-7%%3A3gpp-service.ims.icsi.mmtelRequest-Disposition:fork/**E-UTRAN表示4GTDD是TDD制式,现在支持TDD和FDD的4G通话*/P-Access-Network-Info:3GPP-E-UTRAN-TDD;utran-cell-id-3gpp=460600000000A06A/**打开了precondition*/Supported:100rel,join,norefersub,precondition,replaces,timerAllow:INVITE,ACK,BYE,CANCEL,UPDATE,INFO,PRACK,SUBSCRIBE,NOTIFY,REFERSession-Expires:1800Min-SE:90Call-ID:bbecbowMm@192.168.57.10CSeq:1INVITE/**VoLTE呼叫经过的网络节点数最大值*/文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第3页,共18页Max-Forwards:70User-Agent:RCS-client/OMA1.0HW-VxW/V1.0Via:SIP/2.0/UDP192.168.57.10:5060;branch=z9hG4bKddecbowMmawMmxhaaGL2;rportContent-Type:application/sdpContent-Length:833v=0o=vue32020INIP4192.168.57.10s=-c=INIP4192.168.57.10t=00m=audio31004RTP/AVP108106101102/***********************AMB-WB宽带，a开头的字段是详细解释有4种编码方式：宽带108窄带101宽带DTMF描述101宽带DTMF描述102*/a=rtpmap:108AMR-WB/16000/1a=fmtp:108mode-change-capability=2;max-red=0/************************AMR就表示AMR-NB（窄带）********************/a=rtpmap:106AMR/8000/1a=fmtp:106mode-change-capability=2;max-red=0a=rtpmap:101telephone-event/16000a=fmtp:1010-15a=rtpmap:102telephone-event/8000a=fmtp:1020-15/**************表示1帧/20ms文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第4页,共18页***************/a=ptime:20/***************表示1帧/240秒是个界限，网络侧不能低于这个速率*****************/a=maxptime:240/***************SDP协商****************/a=sendrecv/****************curr：当前状态Preconditiontype：qosstatustype:local****************/a=curr:qoslocalnonea=curr:qosremotenone/****************des：期望derectiontag：sendrecv级别：optional，级别从低到高是none（资源没有），optional（资源可选），mandatory（资源一定要有）****************/a=des:qosoptionallocalsendrecva=des:qosoptionalremotesendrecv/***************m开头的字段是多媒体信息描述***************/m=video37050RTP/AVP118123a=rtpmap:118H264/90000a=fmtp:118profile-level-id=64E00D;max-br=640a=rtpmap:123H264/90000a=fmtp:123profile-level-id=42E00D;max-br=640文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第5页,共18页a=sendrecva=curr:qoslocalnonea=curr:qosremotenonea=des:qosoptionallocalsendrecva=des:qosoptionalremotesendrecv22100Trying/**网络侧回了100Trying表示网络侧在尝试连接被叫*/SIP/2.0100TryingVia:SIP/2.0/UDP192.168.57.10:5060;branch=z9hG4bKddecbowMmawMmxhaaGL2;rport=5060Call-ID:bbecbowMm@192.168.57.10From:sip:[e-mail];tag=ccecbowTo:18801200325sip:[e-mail];user=phoneCSeq:1INVITEContent-Length:0文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第6页,共18页33183SessionProgress/************************网络侧回183表示网络侧在做资源预留，建立QCI5，QCI1等承载*/SIP/2.0183SessionProgressVia:SIP/2.0/UDP192.168.57.10:5060;branch=z9hG4bKddecbowMmawMmxhaaGL2;rport=5060Call-ID:bbecbowMm@192.168.57.10From:sip:[e-mail];tag=ccecbowTo:18801200325sip:[e-mail];user=phone;tag=sbc080479mp79eeCSeq:1INVITEAllow:INVITE,ACK,BYE,CANCEL,UPDATE,INFO,PRACK,SUBSCRIBE,NOTIFY,REFERContact:sip:72.10.10.51:5060Require:100rel,preconditionServer:RCS-client/OMA1.0HW-VxW/V1.0RSeq:1Feature-Caps:*;+g.3gpp.srvcc;+g.3gpp.srvcc-alertingContent-Length:689Content-Type:application/sdpv=0o=-2140121401INIP472.10.10.60s=SBCcallc=INIP472.10.10.60t=00m=audio48150RTP/AVP108101a=rtpmap:108AMR-WB/16000/1a=fmtp:108mode-change-capability=2;max-red=0a=rtpmap:101telephone-event/16000a=fmtp:1010-15文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第7页,共18页a=ptime:20a=maxptime:240/**SDP*/a=sendrecva=curr:qoslocalnonea=curr:qosremotenonea=des:qosmandatorylocalsendrecva=des:qosmandatoryremotesendrecva=conf:qosremotesendrecvm=video48152RTP/AVP118a=rtpmap:118H264/90000a=fmtp:118profile-level-id=64E00D;max-br=640a=sendrecva=curr:qoslocalnonea=curr:qosremotenonea=des:qosmandatorylocalsendrecva=des:qosmandatoryremotesendrecva=conf:qosremotesendrecv文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第8页,共18页44PRACK/****************PRACKUE等待网络预留资源分配****************/PRACKsip:72.10.10.51:5060SIP/2.0From:sip:[e-mail];tag=ccecbowTo:18801200325sip:[e-mail];user=phone;tag=sbc080479mp79eeCall-ID:bbecbowMm@192.168.57.10CSeq:2PRACKMax-Forwards:70User-Agent:RCS-client/OMA1.0HW-VxW/V1.0Via:SIP/2.0/UDP192.168.57.10:5060;branch=z9hG4bKaeecbowMmawMmxhaaqJ2;rportRAck:11INVITEContent-Length:0文档名称文档密级2020-5-26华为保密信息,未经授权禁止扩散第9页,共18页55UPDATE/********************UE收到QCI=1等承载建立后就发UPDATEUE发UPDATE和UE收到PRACK200OK的顺序在不同场景下前后顺序会互换*******************