📄 rfc3261j.txt
字号:
Rosenberg, et. al. Standards Track [Page 14]
RFC 3261 SIP: Session Initiation Protocol June 2002
傊偺偡傋偰偺墳摎傪傕尒傞偙偲偵側傞偲偄偆朷傑偟偄摿惈傕帩偮丅
Alice偺僜僼僩僼僅儞偑180(Ringing)墳摎傪庴怣偡傞偲丄偦傟偼丄偍偦傜偔屇
傃弌偟壒偁傞偄偼Alice偺夋柺忋偵儊僢僙乕僕傪昞帵偟偰丄偙偺忣曬傪Alice
偵搉偡丅
偙偺椺偱偼丄Bob偼捠榖傪庴偗傞偙偲偵偡傞丅斵偑僴儞僪僙僢僩傪庢傞偲丄斵
偺SIP僼僅儞偼丄捠榖偑庴偗傜傟偨偙偲傪帵偡偨傔偵200(OK)墳摎傪憲怣偡傞丅
200(OK)偼丄Bob偑Alice偲妋棫偡傞偙偲傪朷傓僙僢僔儑儞偺僞僀僾偺SDP儊僨傿
傾婰弎傪帩偮儊僢僙乕僕儃僨傿傪娷傓丅寢壥偲偟偰丄2僼僃乕僘偺SDP儊僢僙乕
僕岎姺偑偁傞偙偲偵側傞丅Alice偑堦偮傪Bob偵憲傝丄Bob偼堦偮傪Alice偵憲傝
曉偡丅偙偺2僼僃乕僘偺岎姺偼丄婎杮揑側僱僑僔僄乕僔儑儞擻椡傪採嫙
偡傞丅偦偟偰偙傟偼丄SDP岎姺偺扨弮側僆僼傽乕/傾儞僒乕儌僨儖偵婎偯偄偰
偄傞丅傕偟Bob偑捠榖傪庴偗偨偔側偐偭偨傝丄懠偺捠榖偱價僕乕偩偭偨応崌丄
200(OK)偺偐傢傝偵僄儔乕墳摎偑曉偝傟丄儊僨傿傾僙僢僔儑儞偑妋棫偝傟側偄
寢壥偵側偭偨偩傠偆丅SIP墳摎僐乕僪偺姰慡側儕僗僩偼僙僋僔儑儞21偵偁傞丅
Bob偑憲傞偲偒偺200(OK)(恾1偺儊僢僙乕僕F9)偼埲壓偺傛偆偱偁傞丅
SIP/2.0 200 OK
Via: SIP/2.0/UDP server10.biloxi.com
;branch=z9hG4bKnashds8;received=192.0.2.3
Via: SIP/2.0/UDP bigbox3.site3.atlanta.com
;branch=z9hG4bK77ef4c2312983.1;received=192.0.2.2
Via: SIP/2.0/UDP pc33.atlanta.com
;branch=z9hG4bK776asdhds ;received=192.0.2.1
To: Bob <sip:bob@biloxi.com>;tag=a6c85cf
From: Alice <sip:alice@atlanta.com>;tag=1928301774
Call-ID: a84b4c76e66710@pc33.atlanta.com
CSeq: 314159 INVITE
Contact: <sip:bob@192.0.2.4>
Content-Type: application/sdp
Content-Length: 131
(Bob偺SDP偼帵偝傟偰偄側偄)
墳摎偺嵟弶偺峴偼墳摎僐乕僪(200)偲棟桼僼儗乕僘(OK)傪娷傓丅巆傝偺峴偼
僿僢僟乕僼傿乕儖僪傪娷傓丅Via丄To丄From丄Call-ID丄偍傛傃CSeq僿僢僟乕
僼傿乕儖僪偼INVITE儕僋僄僗僩偐傜僐僺乕偝傟偨丅(3偮偺Via僿僢僟乕僼傿乕
儖僪抣偑偁傞丅Alice偺SIP僼僅儞偑捛壛偟偨傕偺丄atlanta.com偺僾儘僉僔偑
捛壛偟偨傕偺丄biloxy.com偺僾儘僉僔偑捛壛偟偨傕偺偱偁傞丅)Bob偺SIP僼僅
儞偑To僿僢僟乕僼傿乕儖僪偵tag僷儔儊乕僞傪捛壛偟偨丅偙偺tag偼椉曽偺僄
儞僪億僀儞僩偵傛偭偰僟僀傾儘僌偵慻傒崬傑傟丄偙偺屇偺崱屻偺偡傋偰偺儕
Rosenberg, et. al. Standards Track [Page 15]
RFC 3261 SIP: Session Initiation Protocol June 2002
僋僄僗僩偲墳摎偵娷傔傜傟傞丅Contact僿僢僟乕僼傿乕儖僪偼丄Bob偺SIP僼僅
儞偱斵偵僟僀儗僋僩偵摓払偱偒傞URI傪娷傓丅Content-Type偲Content-Length
偼丄Bob偺SDP儊僨傿傾忣曬傪娷傓(偙偙偱偼帵偝傟偰偄側偄)儊僢僙乕僕儃僨傿
偵偮偄偰尵媦偟偰偄傞丅
偙偺椺偱帵偝傟偨DNS偲儘働乕僔儑儞僒乕價僗偺儖僢僋傾僢僾偵壛偊偰丄僾儘
僉僔僒乕僶乕偼丄儕僋僄僗僩傪偳偙偵憲傞偐寛掕偡傞偨傔偵廮擃側乽儖乕僥傿
儞僌偺寛掕乿傪壓偣傞丅椺偊偽丄傕偟Bob偺SIP僼僅儞偑486(Busy Here)
墳摎傪曉偟偨応崌丄biloxi.com偺僾儘僉僔僒乕僶乕偼INVITE傪Bob偺儃僀僗儊乕
儖僒乕僶乕偵僾儘僉僔偡傞偙偲傕偱偒傞丅僾儘僉僔僒乕僶乕偼摨帪偵懡偔偺応
強偵INVITE傪憲傞偙偲傕偱偒傞丅偙偺僞僀僾偺僷儔儗儖僒乕僠偼僼僅乕僋偲偟
偰抦傜傟偰偄傞丅
偙偺応崌丄200(OK)偼2偮偺僾儘僉僔傪捠偟偰儖乕僩僶僢僋偝傟丄Alice偺僜僼
僩僼僅儞偵傛偭偰庴怣偝傟傞丅偦傟偐傜丄屇傃弌偟壒傪巭傔丄捠榖偑庴偗傜
傟偨偙偲傪帵偡丅嵟屻偵丄嵟廔墳摎(200(OK))偺庴怣傪僐儞僼傽乕儉偡傞偨傔
偵丄Alice偺僜僼僩僼僅儞偼妋擣儊僢僙乕僕(ACK)傪Bob偺SIP僼僅儞偵憲傞丅
偙偺椺偱偼丄ACK偼2偮偺僾儘僉僔傪僶僀僷僗偟偰Alice偺僜僼僩僼僅儞偐傜Bob
偺SIP僼僅儞偵捈愙憲傜傟傞丅偙傟偼丄INVITE/200(OK)偺岎姺傪捠偟偰丄2偮
偺僄儞僪億僀儞僩偑丄嵟弶偺INVITE偑憲傜傟偨偲偒偵偼抦傜側偐偭偨偍屳偄
偺傾僪儗僗傪Contact僿僢僟乕僼傿乕儖僪偐傜抦偭偨偨傔偵婲偙傞丅2偮偺僾
儘僉僔偑幚峴偟偨儖僢僋傾僢僾偼傕偼傗昁梫偱偼側偄偺偱丄僾儘僉僔偼僐乕
儖僼儘乕偐傜敳偗傞丅偙傟偱丄SIP僙僢僔儑儞傪妋棫偡傞偨傔偵巊梡偝傟偨
INVITE/200/ACK偺3僂僃僀僴儞僪僔僃僀僋偑姰椆偡傞丅僙僢僔儑儞僙僢僩傾僢
僾偵偮偄偰偺慡徻嵶偼僙僋僔儑儞13偱弎傋傞丅
Alice偲Bob偺儊僨傿傾僙僢僔儑儞偑奐巒偝傟丄斵傜偼丄SDP偺岎姺偱崌堄偟偨
彂幃傪巊梡偟偰儊僨傿傾僷働僢僩傪憲傞丅堦斒偵丄僄儞僪僣乕僄儞
僪偺儊僨傿傾僷働僢僩偼SIP偺僔僌僫儕儞僌儊僢僙乕僕偲偼暿偺宱楬傪庢傞丅
僙僢僔儑儞拞偵丄Alice傑偨偼Bob偺偄偢傟偐偑儊僨傿傾僙僢僔儑儞偺摿惈
(characteristics)偺曄峏傪寛掕偱偒傞丅偙傟偼怴偟偄儊僨傿傾婰弎傪娷傓
re-INVITE傪憲傞偙偲偱払惉偱偒傞丅偙偺re-INVITE偼丄偦傟偑怴偨側僙僢僔儑
儞傪妋棫偡傞偺偱偼側偔婛懚偺僙僢僔儑儞傪廋惓偡傞偨傔偺傕偺偱偁傞偙
偲傪憡庤偑棟夝偡傞傛偆偵丄婛懚偺僟僀傾儘僌傪嶲徠偡傞丅憡庤偼偦偺曄峏
傪庴偗擖傟傞偨傔偵200(OK)傪憲傞丅儕僋僄僗僩傪憲偭偨懁偼偦偺200(OK)偵
懳偟偰ACK偱墳摎偡傞丅憡庤偑曄峏傪庴偗擖傟側偄応崌丄488(Not Acceptable
Here)偺傛偆側僄儔乕墳摎偑憲怣偝傟傞丅偙傟傕ACK傪庴怣偡傞丅偟偐偟側偑傜丄
re-INVITE偺幐攕偼婛懚偺屇傪幐攕偝偣傞尨場偵側傜側偄 - 婛偵僱僑僔僄乕
僩偝傟偨摿惈(characteristics)傪梡偄偰僙僢僔儑儞偼宲懕偡傞丅僙僢僔儑儞
廋惓偵偮偄偰偺慡徻嵶偼僙僋僔儑儞14偱弎傋傞丅
Rosenberg, et. al. Standards Track [Page 16]
RFC 3261 SIP: Session Initiation Protocol June 2002
屇偺廔椆帪偵丄Bob偑愭偵愗抐(僴儞僌傾僢僾)偟丄BYE儊僢僙乕僕傪惗惉偡傞丅
偙偺BYE偼丄嵞傃僾儘僉僔傪僶僀僷僗偟偰丄Alice偺僜僼僩僼僅儞偵僟僀儗僋僩
偵儖乕僩偝傟傞丅Alice偼BYE偺庴怣傪200(OK)墳摎偱僐儞僼傽乕儉偡傞丅偙傟
偼僙僢僔儑儞偲BYE僩儔儞僓僋僔儑儞傪廔椆偡傞丅ACK偼憲傜傟側偄 - ACK偼丄
INVITE儕僋僄僗僩偵懳偡傞墳摎傊偺墳摎偲偟偰偺傒憲怣偝傟傞丅偙偺丄INVITE
偺摿暿側憖嶌偺棟桼偵偮偄偰偼屻傎偳媍榑偡傞偑丄SIP偺怣棅惈偺巇慻傒丄屇
傃弌偟拞偺揹榖偑庴偗傜傟傞傑偱偵庢傞偙偲偑偱偒傞帪娫挿偝丄偍傛傃僼僅乕
僋偵娭楢偟偰偄傞丅偙偺棟桼偵傛傝丄SIP偵偍偗傞儕僋僄僗僩憖嶌偼丄INVITE
傑偨偼旕INVITE(INVITE埲奜偺偡傋偰偺儊僜僢僪)偺偄偢傟偐偵暘椶偝傟傞偙偲
偑懡偄丅僙僢僔儑儞廔椆偵偮偄偰偺慡徻嵶偼僙僋僔儑儞15偱弎傋傞丅
僙僋僔儑儞24.2偱偼恾1偺椺偱帵偝傟偨儊僢僙乕僕偑偡傋偰婰嵹偝傟偰偄傞丅
偁傞応崌偵偼丄僙僢僔儑儞偑宲懕偟偰偄傞偁偄偩拞丄2偮偺僄儞僪億僀儞僩娫
偺偡傋偰偺儊僢僙乕僕儞僌傪尒傞偙偲偼丄SIP偺僔僌僫儕儞僌僷僗偺拞偵偁傞
僾儘僉僔偵偲偭偰桳梡偐傕偟傟側偄丅椺偊偽丄biloxi.com偺僾儘僉僔僒乕
僶乕偑嵟弶偺INVITE屻傕SIP偺儊僢僙乕僕儞僌僷僗拞偵偲偳傑傞偙偲傪朷傓応
崌丄偦傟偼INVITE偵丄夝寛偝傟傞偲偦偺僾儘僉僔偺儂僗僩柤傑偨偼IP傾僪儗
僗偵側傞URI傪娷傓丄Record-Route偲偟偰抦傜傟偰偄傞丄儖乕僥傿儞僌偵昁梫
偲偝傟傞僿僢僟乕僼傿乕儖僪傪捛壛偡傞偩傠偆丅偙偺忣曬偼丄Bob偺SIP僼僅
儞偲(200(OK)偱曉偝傟傞偙偲偵側傞Record-Route僿僢僟乕僼傿乕儖僪偵傛偭
偰)Alice偺僜僼僩僼僅儞偺憃曽偵庴怣偝傟丄僟僀傾儘僌偑宲懕偟偰偄傞偁偄
偩婰壇偝傟傞丅偦偺屻biloxy.com偺僾儘僉僔僒乕僶乕偼丄ACK丄BYE丄偍傛傃
BYE偵懳偡傞200(OK)傪庴怣偟偰僾儘僉僔偡傞偩傠偆丅奺僾儘僉僔偼丄偦傟偵
懕偔儊僢僙乕僕儞僌傪庴怣偡傞偙偲傪撈帺偵寛掕偱偒丄儊僢僙乕僕儞僌偼丄
偦傟傪庴怣偡傞偙偲傪慖傫偩偡傋偰偺僾儘僉僔傪宱桼偡傞偩傠偆丅偙偺擻椡
偼丄僐乕儖撪婡擻(mid-call features)傪採嫙偡傞僾儘僉僔偺偨傔偵偨傃偨傃
巊梡偝傟傞丅
搊榐偼丄SIP偵偍偗傞傕偆堦偮偺捠忢憖嶌偱偁傞丅搊榐偼biloxi.com偺僒乕僶乕
偑Bob偺尰嵼埵抲傪抦傞偙偲偑偱偒傞堦偮偺曽朄偱偁傞丅弶婜壔帪偍傛傃掕
婜揑偵丄Bob偺SIP僼僅儞偼SIP搊榐僒乕僶乕偲偟偰抦傜傟傞biloxi.com偺僒乕
僶乕偵REGISTER儊僢僙乕僕傪憲傞丅REGISTER儊僢僙乕僕偼Bob偺SIP URI傑偨
偼SIPS URI(sip:bob@biloxi.com)偲斵偑尰嵼儘僌僀儞偟偰偄傞儅僔儞傪娭楢
晅偗傞(Contact僿僢僟乕拞偱SIP URI傑偨偼SIPS URI偲偟偰揱偊傜傟傞)丅搊
榐僒乕僶乕偼偙偺娭楢晅偗(僶僀儞僨傿儞僌偲傕屇偽傟傞)傪僨乕僞儀乕僗(儘
働乕僔儑儞僒乕價僗偲屇偽傟傞)偵彂偒崬傓丅偦傟偼biloxi.com僪儊僀儞偺僾
儘僉僔偑棙梡偱偒傞丅僪儊僀儞偺搊榐僒乕僶乕偼丄偦偺僪儊僀儞偺僾儘僉僔
偲摨偠応強偵攝抲偝傟傞偙偲偑懡偄丅SIP僒乕僶乕偺僞僀僾偺嬫暿偼榑棟揑側
傕偺偱偁偭偰丄暔棟揑側傕偺偱側偄偲偄偆偙偲偼廳梫側僐儞僙僾僩偱偁傞丅
Bob偼丄扨堦僨僶僀僗偐傜偺搊榐偲偄偆偙偲偵惂尷傪庴偗側偄丅椺偊偽丄帺
戭偵偁傞斵偺SIP僼僅儞偲僆僼傿僗偵偁傞SIP僼僅儞偺椉曽偱搊榐傪憲傞偙偲
偑偱偒傞丅偙偺忣曬偼嫟偵儘働乕僔儑儞僒乕價僗偵婰壇偝傟丄Bob偺応強傪摿
Rosenberg, et. al. Standards Track [Page 17]
RFC 3261 SIP: Session Initiation Protocol June 2002
掕偡傞偨傔偵僾儘僉僔偑條乆側僞僀僾偺専嶕傪幚峴偡傞偙偲傪壜擻偵偡傞丅
摨條偵丄擇恖埲忋偺儐乕僓乕傪丄摨帪偵堦偮偺僨僶僀僗忋偵搊榐偡傞偙偲偑
偱偒傞丅
儘働乕僔儑儞僒乕價僗偼偨偩偺拪徾揑側僐儞僙僾僩偱偁傞丅偦傟偼捠忢丄僾
儘僉僔偑URI傪僀儞僾僢僩偟偰丄儕僋僄僗僩傪偳偙偵憲傞偐傪僾儘僉僔偵嫵偊
傞0屄埲忋偺URI偺僙僢僩傪庴偗庢傞偙偲傪壜擻偵偡傞忣曬傪娷傓丅搊榐偼偙
偺忣曬傪惗惉偡傞偨傔偺堦偮偺曽朄偱偁傞偑丄桞堦偺曽朄偱偼側偄丅娗棟幰
偺敾抐偱丄擟堄偺儅僢僺儞僌婡擻傪愝掕偱偒傞丅
嵟屻偵丄SIP偵偍偄偰搊榐偼丄憲傜傟偰偔傞SIP儕僋僄僗僩偺儖乕僥傿儞僌偵
巊梡偝傟丄憲傝弌偝傟傞儕僋僄僗僩偺擣壜偵偼壗偺栶妱傕壥偨偝側偄偲偄偆
偙偲偵拲堄偡傞偙偲偑廳梫偱偁傞丅SIP偵偍偄偰擣壜偲擣徹偼丄僙僋僔儑儞26
偱媍榑偝傟傞傛偆偵丄僠儍儗儞僕墳摎偺巇慻傒偱儕僋僄僗僩偛偲偵丄偁傞偄偼
壓埵儗僀儎乕僗僉乕儉傪巊梡偟偰丄憖嶌偝傟傞丅
偙偺搊榐偺椺偵偮偄偰偺SIP儊僢僙乕僕偺姰慡側僙僢僩偺徻嵶偼丄僙僋僔儑儞
24.1偱弎傋傜傟偰偄傞丅
OPTIONS傪巊梡偟偰SIP僒乕僶乕傗僋儔僀傾儞僩偺擻椡傪栤偄崌傢偣偨傝丄
CANCEL傪巊梡偟偰儁儞僨傿儞僌拞偺儕僋僄僗僩傪僉儍儞僙儖偡傞偲偄偭偨
SIP偺晅壛揑側憖嶌偼丄屻偺僙僋僔儑儞偱徯夘偝傟傞丅
5 僾儘僩僐儖偺峔憿
SIP偼儗僀儎乕壔偝傟偨僾儘僩僐儖偲偟偰峔憿壔偝傟偰偄傞丅偙傟偼丄偦偺
摦嶌偑丄奺僗僥乕僕娫偺備傞偄寢崌偺傒偑偁傞丄傎偲傫偳撈棫偟偨夁掱偵偁傞
僗僥乕僕偺僙僢僩偲偄偆宍偱愢柧偝傟傞偙偲傪堄枴偡傞丅僾儘僩僐儖偺摦嶌
偼丄偦傟傪昤幨偡傞偨
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