多媒體通信技術(第七章終端)-資料下載頁

　　

【正文】 sphoneViaHeaderforzzzserverMaxForwardsdecreases1JamesPolk20230503INVITE INVITEAlice Bob透過 Proxy ServerSIPProxy“”200OKSIP/200OKVia:SIP/branch=received=Via:SIP/branch=z9hG4bKnashds8received=To:Bobsip:。tag=a6c85cfFrom:Alicesip:。tag=1928301774CallID:CSeq:314159INVITEContact:sip:ContentType:application/sdpContentLength:131(Bob39。sSDPnotshown)NoticebothViaheadersINVITE INVITE200OKAlice Bob透過 Proxy ServerSIPProxy“”200OKSIP/200OKVia:SIP/branch=z9hG4bKnashds8received=To:Bobsip:。tag=a6c85cfFrom:Alicesip:。tag=1928301774CallID:CSeq:314159INVITEContact:sip:ContentType:application/sdpContentLength:131(Bob39。sSDPnotshown)NoticeoneViaheaderINVITE INVITE200OK200OKAlice Bob透過 Proxy ServerACKACKsip:SIP/Via:SIP/branch=z9hG4bKnashds8MaxForwards:70To:Bobsip:。tag=a6c85cfFrom:Alicesip:。tag=1928301774CallID:CSeq:314159ACKContentLength:0SIPProxy“”INVITE INVITE200OK200OKSessionEstablishedAlice Bob透過 Proxy ServerACKSIPProxy“”INVITE INVITE200OK200OKSessionEstablishedAlice Bob透過 Proxy ServerACKSIPProxy“”BYEsip:SIP/Via:SIP/branch=z9hG4bKnashds8MaxForwards:70From:Bobsip:。tag=a6c85cfTo:Alicesip:。tag=1928301774CallID:CSeq:231BYEContentLength:0BYEINVITE INVITE200OK200OKSessionEstablishedAlice Bob透過 Proxy ServerACKBYESIPProxy“”200OKSIP/200OKVia:SIP/From:Alicesip:。tag=1928301774To:Bobsip:。tag=a6c85cfCallID:CSeq:231BYEContentLength:0AliceSIP Methods: REGISTERREGISTER – 註冊 vSIP URI 稱之為 Address of Record (AOR)v把一個 AOR和現在可以連繫得上的實際位址對應連接在一起v讓 UA可以收到 SIP的訊息vUAs可以利用下列方法向伺服器註冊167。 手動設定167。 AddressofRecord167。 Multicast []REGISTERREGISTERsip:SIP/Via:SIP/branch=z9hG4bk2l55n1To:Alicesip:From:Alicesip:。tag=283074CallID:CSeq:31862REGISTERContact:sip:Expires:21600ContentLength:0SIPRegistrarServerREGISTERAliceSIP Methods: REGISTERSIPRegistrarServer200OKSIP/200OKVia:SIP/branch=z9hG4bk2l55n1。received=To:Alicesip:。tag=a6c85e3From:Alicesip:。tag=283074CallID:CSeq:31862REGISTERContact:sip:Contact:sip:Expires:3600ContactLength:0v200 (OK) 回應包含一連串的 Contact vExpires Header 告知 UA註冊的有效期限REGISTER通常是需要經過密碼認證的Call ForkingINVITEINVITEAliceINVITEINVITE INVITE OfficePhoneBob’sNotebookBob’sMobile phoneBob’s同時嚮，看哪一個先接！Alice BobSIP Methods: MESSAGE (RFC3428)vMESSAGE167。 以 近乎 即時的方式傳送 167。 存在在 MIME的主體中167。 不會啓始新的 dialogs167。 訊息之間沒有任何關聯167。 不可以超過 1300 bytesMESSAGEsip:SIP/Via:SIP/branch=z9hG4bK776asegmaMaxForwards:70To:Bobsip:From:Alicesip:。tag=1928301774CallID:CSeq:22756MESSAGEContentType:text/plainContentDisposition:renderContentLength:37Isn’tthisagreatpresentation,Bob?MESSAGEAlice BobSIP Methods: MESSAGE (RFC3428)MESSAGE200OKSIP/200OKVia:SIP/branch=z9hG4bKnashds7。received=To:sip:sip:。tag=a6c85e3From:tag=1928301774 CallID:CSeq:22756MESSAGEContentLength:0參考文獻謝謝觀看 /歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH