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📁 通讯类的标准。对要开发SS7的朋友有很大帮助的。（通讯协议）
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<BODY>
<DIV class=pg></DIV><!-- bitmap and vector images are written here -->
<DIV class=im0><IMG height=3 src="001_53.files/001_45_53_1.jpg" width=557 
border=0></DIV>
<DIV class=im1><IMG height=2 src="001_53.files/001_45_53_2.jpg" width=557 
border=0></DIV>
<DIV class=im2><IMG height=3 src="001_53.files/001_45_53_3.jpg" width=558 
border=0></DIV>
<DIV class=im3><IMG height=3 src="001_53.files/001_45_53_4.jpg" width=558 
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<DIV class=im4><IMG height=2 src="001_53.files/001_45_53_5.jpg" width=558 
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<DIV class=im6><IMG height=64 src="001_53.files/right.jpg" width=563 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>(<SPAN class=em2>续</SPAN>)</SPAN></NOBR></SPAN> <SPAN 
class=ps1><NOBR><SPAN class=ft1>报</SPAN></NOBR></SPAN> <SPAN 
class=ps2><NOBR><SPAN class=ft1>头</SPAN></NOBR></SPAN> <SPAN 
class=ps3><NOBR><SPAN class=ft1>消息类型</SPAN></NOBR></SPAN> <SPAN 
class=ps4><NOBR>ACK</NOBR></SPAN> <SPAN class=ps5><NOBR>BYE</NOBR></SPAN> <SPAN 
class=ps6><NOBR>CANCEL</NOBR></SPAN> <SPAN class=ps7><NOBR>INVITE</NOBR></SPAN> 
<SPAN class=ps8><NOBR>OPTIONS</NOBR></SPAN> <SPAN 
class=ps9><NOBR>REGISTER</NOBR></SPAN> <SPAN 
class=ps10><NOBR>Response-Key</NOBR></SPAN> <SPAN class=ps11><NOBR><SPAN 
class=ft1>请求</SPAN></NOBR></SPAN> <SPAN class=ps12><NOBR>-</NOBR></SPAN> <SPAN 
class=ps13><NOBR>o</NOBR></SPAN> <SPAN class=ps14><NOBR>o</NOBR></SPAN> <SPAN 
class=ps15><NOBR>o</NOBR></SPAN> <SPAN class=ps16><NOBR>o</NOBR></SPAN> <SPAN 
class=ps17><NOBR>o</NOBR></SPAN> <SPAN 
class=ps18><NOBR>Record-Route</NOBR></SPAN> <SPAN class=ps19><NOBR><SPAN 
class=ft1>请求</SPAN></NOBR></SPAN> <SPAN class=ps20><NOBR>o</NOBR></SPAN> <SPAN 
class=ps21><NOBR>o</NOBR></SPAN> <SPAN class=ps22><NOBR>o</NOBR></SPAN> <SPAN 
class=ps23><NOBR>o</NOBR></SPAN> <SPAN class=ps24><NOBR>o</NOBR></SPAN> <SPAN 
class=ps25><NOBR>o</NOBR></SPAN> <SPAN 
class=ps26><NOBR>Record-Route</NOBR></SPAN> <SPAN 
class=ps27><NOBR>2xx</NOBR></SPAN> <SPAN class=ps28><NOBR>o</NOBR></SPAN> <SPAN 
class=ps29><NOBR>o</NOBR></SPAN> <SPAN class=ps30><NOBR>o</NOBR></SPAN> <SPAN 
class=ps31><NOBR>o</NOBR></SPAN> <SPAN class=ps32><NOBR>o</NOBR></SPAN> <SPAN 
class=ps33><NOBR>o</NOBR></SPAN> <SPAN class=ps34><NOBR>Route</NOBR></SPAN> 
<SPAN class=ps35><NOBR><SPAN class=ft1>请求</SPAN></NOBR></SPAN> <SPAN 
class=ps36><NOBR>o</NOBR></SPAN> <SPAN class=ps37><NOBR>o</NOBR></SPAN> <SPAN 
class=ps38><NOBR>o</NOBR></SPAN> <SPAN class=ps39><NOBR>o</NOBR></SPAN> <SPAN 
class=ps40><NOBR>o</NOBR></SPAN> <SPAN class=ps41><NOBR>o</NOBR></SPAN> <SPAN 
class=ps42><NOBR>Server</NOBR></SPAN> <SPAN class=ps43><NOBR><SPAN 
class=ft1>应答</SPAN></NOBR></SPAN> <SPAN class=ps44><NOBR>o</NOBR></SPAN> <SPAN 
class=ps45><NOBR>o</NOBR></SPAN> <SPAN class=ps46><NOBR>o</NOBR></SPAN> <SPAN 
class=ps47><NOBR>o</NOBR></SPAN> <SPAN class=ps48><NOBR>o</NOBR></SPAN> <SPAN 
class=ps49><NOBR>o</NOBR></SPAN> <SPAN class=ps50><NOBR>Subject</NOBR></SPAN> 
<SPAN class=ps51><NOBR><SPAN class=ft1>请求</SPAN></NOBR></SPAN> <SPAN 
class=ps52><NOBR>-</NOBR></SPAN> <SPAN class=ps53><NOBR>-</NOBR></SPAN> <SPAN 
class=ps54><NOBR>-</NOBR></SPAN> <SPAN class=ps55><NOBR>o</NOBR></SPAN> <SPAN 
class=ps56><NOBR>-</NOBR></SPAN> <SPAN class=ps57><NOBR>-</NOBR></SPAN> <SPAN 
class=ps58><NOBR>Timestamp</NOBR></SPAN> <SPAN class=ps59><NOBR><SPAN 
class=ft1>通用</SPAN></NOBR></SPAN> <SPAN class=ps60><NOBR>o</NOBR></SPAN> <SPAN 
class=ps61><NOBR>o</NOBR></SPAN> <SPAN class=ps62><NOBR>o</NOBR></SPAN> <SPAN 
class=ps63><NOBR>o</NOBR></SPAN> <SPAN class=ps64><NOBR>o</NOBR></SPAN> <SPAN 
class=ps65><NOBR>o</NOBR></SPAN> <SPAN class=ps66><NOBR>To</NOBR></SPAN> <SPAN 
class=ps67><NOBR><SPAN class=ft1>通用，从</SPAN></NOBR></SPAN> <SPAN 
class=ps68><NOBR>m</NOBR></SPAN> <SPAN class=ps69><NOBR>m</NOBR></SPAN> <SPAN 
class=ps70><NOBR>m</NOBR></SPAN> <SPAN class=ps71><NOBR>m</NOBR></SPAN> <SPAN 
class=ps72><NOBR>m</NOBR></SPAN> <SPAN class=ps73><NOBR>m</NOBR></SPAN> <SPAN 
class=ps74><NOBR><SPAN class=ft1>请求复制</SPAN></NOBR></SPAN> <SPAN 
class=ps75><NOBR><SPAN class=ft1>到应答</SPAN></NOBR></SPAN> <SPAN 
class=ps76><NOBR>Unsupporeted</NOBR></SPAN> <SPAN 
class=ps77><NOBR>420</NOBR></SPAN> <SPAN class=ps78><NOBR>o</NOBR></SPAN> <SPAN 
class=ps79><NOBR>o</NOBR></SPAN> <SPAN class=ps80><NOBR>o</NOBR></SPAN> <SPAN 
class=ps81><NOBR>o</NOBR></SPAN> <SPAN class=ps82><NOBR>o</NOBR></SPAN> <SPAN 
class=ps83><NOBR>o</NOBR></SPAN> <SPAN class=ps84><NOBR>User-Agent</NOBR></SPAN> 
<SPAN class=ps85><NOBR><SPAN class=ft1>通用</SPAN></NOBR></SPAN> <SPAN 
class=ps86><NOBR>o</NOBR></SPAN> <SPAN class=ps87><NOBR>o</NOBR></SPAN> <SPAN 
class=ps88><NOBR>o</NOBR></SPAN> <SPAN class=ps89><NOBR>o</NOBR></SPAN> <SPAN 
class=ps90><NOBR>o</NOBR></SPAN> <SPAN class=ps91><NOBR>o</NOBR></SPAN> <SPAN 
class=ps92><NOBR>Via</NOBR></SPAN> <SPAN class=ps93><NOBR><SPAN 
class=ft1>通用，从</SPAN></NOBR></SPAN> <SPAN class=ps94><NOBR>m</NOBR></SPAN> <SPAN 
class=ps95><NOBR>m</NOBR></SPAN> <SPAN class=ps96><NOBR>m</NOBR></SPAN> <SPAN 
class=ps97><NOBR>m</NOBR></SPAN> <SPAN class=ps98><NOBR>m</NOBR></SPAN> <SPAN 
class=ps99><NOBR>m</NOBR></SPAN> <SPAN class=ps100><NOBR><SPAN 
class=ft1>请求复制</SPAN></NOBR></SPAN> <SPAN class=ps101><NOBR><SPAN 
class=ft1>到应答</SPAN></NOBR></SPAN> <SPAN class=ps102><NOBR>Warning</NOBR></SPAN> 
<SPAN class=ps103><NOBR><SPAN class=ft1>应答</SPAN></NOBR></SPAN> <SPAN 
class=ps104><NOBR>o</NOBR></SPAN> <SPAN class=ps105><NOBR>o</NOBR></SPAN> <SPAN 
class=ps106><NOBR>o</NOBR></SPAN> <SPAN class=ps107><NOBR>o</NOBR></SPAN> <SPAN 
class=ps108><NOBR>o</NOBR></SPAN> <SPAN class=ps109><NOBR>o</NOBR></SPAN> <SPAN 
class=ps110><NOBR><SPAN class=ft3>8. SIP<SPAN 
class=em3>压缩消息格式概述</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps111><NOBR><SPAN 
class=ft3>SIP<SPAN class=em4>使用一种压缩文本消息格式用于</SPAN>UDP<SPAN 
class=em4>和授权，因此整个消息不会在到达目的地的途中</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps112><NOBR><SPAN class=ft4>陷入<SPAN class=em0>MTU</SPAN>碎片问题。压缩格式看上去和<SPAN 
class=em0>SDP</SPAN>规范中使用的格式相似。表<SPAN 
class=em0>1-15</SPAN>中列出了协议参</SPAN></NOBR></SPAN> <SPAN class=ps113><NOBR><SPAN 
class=ft4>数使用的缩写。标记<SPAN class=em0>c</SPAN>表示有条件，<SPAN 
class=em0>n/a</SPAN>表示不可用，<SPAN class=em0>m</SPAN>表示必须，<SPAN 
class=em0>o</SPAN>表示可选。</SPAN></NOBR></SPAN> <SPAN class=ps114><NOBR><SPAN 
class=ft5>表<SPAN class=em5>1-15 &nbsp;&nbsp;SIP</SPAN>压缩标记</SPAN></NOBR></SPAN> 
<SPAN class=ps115><NOBR><SPAN class=ft1>短&nbsp;名&nbsp;称</SPAN></NOBR></SPAN> 
<SPAN class=ps116><NOBR><SPAN class=ft1>长&nbsp;名&nbsp;称</SPAN></NOBR></SPAN> 
<SPAN class=ps117><NOBR>c</NOBR></SPAN> <SPAN class=ps118><NOBR>Content 
type</NOBR></SPAN> <SPAN class=ps119><NOBR>e</NOBR></SPAN> <SPAN 
class=ps120><NOBR>Content encoding</NOBR></SPAN> <SPAN 
class=ps121><NOBR>f</NOBR></SPAN> <SPAN class=ps122><NOBR>From</NOBR></SPAN> 
<SPAN class=ps123><NOBR>i</NOBR></SPAN> <SPAN class=ps124><NOBR>Call 
ID</NOBR></SPAN> <SPAN class=ps125><NOBR>m</NOBR></SPAN> <SPAN 
class=ps126><NOBR>Contact<SPAN class=em1>（</SPAN>moved<SPAN 
class=em1>）</SPAN></NOBR></SPAN> <SPAN class=ps127><NOBR>l</NOBR></SPAN> <SPAN 
class=ps128><NOBR>Content length</NOBR></SPAN> <SPAN 
class=ps129><NOBR>s</NOBR></SPAN> <SPAN class=ps130><NOBR>Subject</NOBR></SPAN> 
<SPAN class=ps131><NOBR>t</NOBR></SPAN> <SPAN class=ps132><NOBR>To</NOBR></SPAN> 
<SPAN class=ps133><NOBR>v</NOBR></SPAN> <SPAN 
class=ps134><NOBR>Via</NOBR></SPAN> <SPAN class=ps135><NOBR><SPAN 
class=ft4>下面是使用压缩表示的<SPAN class=em0>SIP 
INVITE</SPAN>消息体编码的实例。消息后面是使用呼叫代理的实际</SPAN></NOBR></SPAN> <SPAN 
class=ps136><NOBR><SPAN class=ft4>信令的例子，它是对真实的实时<SPAN 
class=em0>SIP</SPAN>跟踪记录进行位解码得到的。</SPAN></NOBR></SPAN> <SPAN 
class=ps137><NOBR><SPAN class=ft3>INVITE sip:mark@nstd.hp.com 
SIP/2.0</SPAN></NOBR></SPAN> <SPAN class=ps138><NOBR><SPAN 
class=ft3>v:SIP/2.0/UDP 10.0.0.1;maddr=10.0.0.10;ttl=24</SPAN></NOBR></SPAN> 
<SPAN class=ps139><NOBR><SPAN class=ft3>f:sip:bill@dflx.com</SPAN></NOBR></SPAN> 
<SPAN class=ps140><NOBR><SPAN 
class=ft3>t:sip:mark@nstd.hp.com</SPAN></NOBR></SPAN> <SPAN 
class=ps141><NOBR><SPAN class=ft3>i:12345@10.0.0.2</SPAN></NOBR></SPAN> <SPAN 
class=ps142><NOBR><SPAN class=ft3>c:application/sdp</SPAN></NOBR></SPAN> <SPAN 
class=ps143><NOBR><SPAN class=ft3>Cseq: 1 INVITE</SPAN></NOBR></SPAN> <SPAN 
class=ps144><NOBR><SPAN class=ft3>l:length of message in 
bytes</SPAN></NOBR></SPAN> <SPAN class=ps145><NOBR><SPAN class=ft6>第<SPAN 
class=em6>1</SPAN>章<SPAN class=em6>IP</SPAN>语音和交互应用的协议</SPAN></NOBR></SPAN> 
<SPAN class=ps146><NOBR><SPAN class=ft7>53</SPAN></NOBR></SPAN> <SPAN 
class=ps147><NOBR><SPAN class=ft8>文档</SPAN></NOBR></SPAN> </BODY></HTML>
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