001_12.htm

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<BODY>
<DIV class=pg></DIV><!-- bitmap and vector images are written here -->
<DIV class=im0><IMG height=3 src="1_12.files/001_2_12_1.jpg" width=558 
border=0></DIV>
<DIV class=im1><IMG height=2 src="1_12.files/001_2_12_2.jpg" width=558 
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<DIV class=im2><IMG height=64 src="1_12.files/left.jpg" width=564 
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<DIV class=im3><IMG height=2 src="1_12.files/001_2_12_4.jpg" width=561 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>MGCP<SPAN class=em1>需要命令和应答之间的合作，事务标识符（&nbsp;<SPAN 
class=em0>Transaction Identifier</SPAN>）可以满足这个</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps1><NOBR><SPAN 
class=ft1>需要。事务标识符在编码时作为命令报头的一部分，出现在应答的报头中。它的取值范围在</SPAN></NOBR></SPAN> <SPAN 
class=ps2><NOBR><SPAN class=ft0>1<SPAN class=em1>～</SPAN>999999999<SPAN 
class=em1>之间。</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps3><NOBR><SPAN 
class=ft1>命令报头也可以包含参数行（见表<SPAN class=em0>1-3<SPAN 
class=em1>）</SPAN></SPAN>。命令报头中的命令行包括动词的名称、事务标</SPAN></NOBR></SPAN> <SPAN 
class=ps4><NOBR><SPAN class=ft1>识符、执行该命令的端点名称、协议版本。</SPAN></NOBR></SPAN> <SPAN 
class=ps5><NOBR><SPAN class=ft2>表<SPAN class=em7>1-3 
&nbsp;S/MGCP</SPAN>命令的参数</SPAN></NOBR></SPAN> <SPAN class=ps6><NOBR><SPAN 
class=ft3>参&nbsp;数&nbsp;名</SPAN></NOBR></SPAN> <SPAN class=ps7><NOBR><SPAN 
class=ft3>编</SPAN></NOBR></SPAN> <SPAN class=ps8><NOBR><SPAN 
class=ft3>码</SPAN></NOBR></SPAN> <SPAN class=ps9><NOBR><SPAN 
class=ft3>参&nbsp;数&nbsp;值</SPAN></NOBR></SPAN> <SPAN class=ps10><NOBR><SPAN 
class=ft3>备</SPAN></NOBR></SPAN> <SPAN class=ps11><NOBR><SPAN 
class=ft3>注</SPAN></NOBR></SPAN> <SPAN class=ps12><NOBR>CallID</NOBR></SPAN> 
<SPAN class=ps13><NOBR>C</NOBR></SPAN> <SPAN 
class=ps14><NOBR>ConnectionID</NOBR></SPAN> <SPAN 
class=ps15><NOBR>I</NOBR></SPAN> <SPAN 
class=ps16><NOBR>NotifiedEntity</NOBR></SPAN> <SPAN 
class=ps17><NOBR>N</NOBR></SPAN> <SPAN 
class=ps18><NOBR>RequestIdentifier</NOBR></SPAN> <SPAN 
class=ps19><NOBR>X</NOBR></SPAN> <SPAN 
class=ps20><NOBR>LocalConnection</NOBR></SPAN> <SPAN 
class=ps21><NOBR>L</NOBR></SPAN> <SPAN class=ps22><NOBR>Options</NOBR></SPAN> 
<SPAN class=ps23><NOBR>ConnectionMode</NOBR></SPAN> <SPAN 
class=ps24><NOBR>M</NOBR></SPAN> <SPAN 
class=ps25><NOBR>RequestedEvents</NOBR></SPAN> <SPAN 
class=ps26><NOBR>R</NOBR></SPAN> <SPAN 
class=ps27><NOBR>SignalRequests</NOBR></SPAN> <SPAN 
class=ps28><NOBR>S</NOBR></SPAN> <SPAN class=ps29><NOBR>DigitMap</NOBR></SPAN> 
<SPAN class=ps30><NOBR>D</NOBR></SPAN> <SPAN 
class=ps31><NOBR>ObservedEvents</NOBR></SPAN> <SPAN 
class=ps32><NOBR>O</NOBR></SPAN> <SPAN class=ps33><NOBR>Connection</NOBR></SPAN> 
<SPAN class=ps34><NOBR>P</NOBR></SPAN> <SPAN 
class=ps35><NOBR>Parameters</NOBR></SPAN> <SPAN 
class=ps36><NOBR>SpecifiedEnd</NOBR></SPAN> <SPAN 
class=ps37><NOBR>Z</NOBR></SPAN> <SPAN class=ps38><NOBR>PointID</NOBR></SPAN> 
<SPAN class=ps39><NOBR>RequestedInfo</NOBR></SPAN> <SPAN 
class=ps40><NOBR>F</NOBR></SPAN> <SPAN class=ps41><NOBR>Quarantine</NOBR></SPAN> 
<SPAN class=ps42><NOBR>Q</NOBR></SPAN> <SPAN 
class=ps43><NOBR>Handling</NOBR></SPAN> <SPAN 
class=ps44><NOBR>DetectEvents</NOBR></SPAN> <SPAN 
class=ps45><NOBR>T</NOBR></SPAN> <SPAN 
class=ps46><NOBR>EventStates</NOBR></SPAN> <SPAN 
class=ps47><NOBR>ES</NOBR></SPAN> <SPAN 
class=ps48><NOBR>RestartMethod</NOBR></SPAN> <SPAN 
class=ps49><NOBR>RM</NOBR></SPAN> <SPAN class=ps50><NOBR><SPAN 
class=ft5>12&nbsp;&nbsp;<SPAN class=em2>IP </SPAN><SPAN 
class=em8>电话技术：稳定的</SPAN><SPAN class=em2>VoIP</SPAN><SPAN 
class=em8>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps51><NOBR><SPAN 
class=ft6>文档</SPAN></NOBR></SPAN> <SPAN class=ps52><NOBR><SPAN 
class=ft7>十六进制字符串，最长为<SPAN class=em3>32</SPAN>个字符。该值由<SPAN 
class=em3>MGC</SPAN>传送给<SPAN class=em3>MG</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps53><NOBR><SPAN class=ft7>端点以标识呼叫，可能包含一个或多个连接</SPAN></NOBR></SPAN> <SPAN 
class=ps54><NOBR><SPAN class=ft7>该值由<SPAN class=em3>MG</SPAN>端点选择，作为<SPAN 
class=em3>CRCX</SPAN>命令的结果</SPAN></NOBR></SPAN> <SPAN class=ps55><NOBR><SPAN 
class=ft8>RFC821<SPAN class=em4>格式的标识符，如</SPAN>MGC@ca.anynet.com:5626<SPAN 
class=em4>或</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps56><NOBR><SPAN 
class=ft8>Joe@[128.23.0.4]<SPAN class=em4>。如果使用</SPAN>IP<SPAN 
class=em4>地址，必须用括号括起来。指定</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps57><NOBR><SPAN 
class=ft7>的实体被假定成接收所有被请求事件的通知。如果省略该参数，</SPAN></NOBR></SPAN> <SPAN 
class=ps58><NOBR><SPAN class=ft7>端点把它观察到的事件送给最后一个发给它有效命令的实体</SPAN></NOBR></SPAN> 
<SPAN class=ps59><NOBR><SPAN class=ft7>该参数由<SPAN 
class=em3>MGC</SPAN>选择，在请求事件通知时发送给<SPAN 
class=em3>MG</SPAN>。在观察</SPAN></NOBR></SPAN> <SPAN class=ps60><NOBR><SPAN 
class=ft7>到被请求的事件时，<SPAN class=em3>MG</SPAN>以同样的参数值应答，并向<SPAN 
class=em3>MFC</SPAN>发送</SPAN></NOBR></SPAN> <SPAN class=ps61><NOBR><SPAN 
class=ft7>一条<SPAN class=em3>NTFY</SPAN>信息</SPAN></NOBR></SPAN> <SPAN 
class=ps62><NOBR><SPAN class=ft7>该结构刻画介质流编码方式、打包周期、使用的带宽、服务</SPAN></NOBR></SPAN> 
<SPAN class=ps63><NOBR><SPAN class=ft7>类型和回声消除的使用。它由<SPAN 
class=em3>MGC</SPAN>发送给端点，通常在<SPAN class=em3>CRCX</SPAN></SPAN></NOBR></SPAN> 
<SPAN class=ps64><NOBR><SPAN class=ft7>命令之中</SPAN></NOBR></SPAN> <SPAN 
class=ps65><NOBR><SPAN class=ft7>把通信通道定义成</SPAN></NOBR></SPAN> <SPAN 
class=ps66><NOBR><SPAN class=ft8>f d x<SPAN class=em4>、</SPAN>h d x (<SPAN 
class=em4>只能发送或只能接收</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps67><NOBR><SPAN 
class=ft8>)<SPAN class=em4>、</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps68><NOBR><SPAN class=ft8>loopback<SPAN class=em4>、</SPAN>inactive<SPAN 
class=em4>、</SPAN>data<SPAN class=em4>。由</SPAN>MGC<SPAN 
class=em4>发送给端点</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps69><NOBR><SPAN 
class=ft8>MGC<SPAN 
class=em4>使用该参数，发送一个或多个偶数编码给请求该参数的</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps70><NOBR><SPAN class=ft8>MG<SPAN class=em4>端点。事件有</SPAN>On-Hook<SPAN 
class=em4>、</SPAN>Off-Hook<SPAN class=em4>、</SPAN>Digits Collected<SPAN 
class=em4>等。可</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps71><NOBR><SPAN 
class=ft7>以请求将事件立即发送、延迟传送或聚集起来</SPAN></NOBR></SPAN> <SPAN class=ps72><NOBR><SPAN 
class=ft7>该参数由<SPAN class=em3>MGC</SPAN>发送给<SPAN 
class=em3>MG</SPAN>端点，请求发送如拨号音之类的</SPAN></NOBR></SPAN> <SPAN 
class=ps73><NOBR><SPAN class=ft7>信号</SPAN></NOBR></SPAN> <SPAN 
class=ps74><NOBR><SPAN class=ft7>该参数由<SPAN class=em3>MGC</SPAN>发送给<SPAN 
class=em3>MG</SPAN>端点，根据编号方式的设计简化有</SPAN></NOBR></SPAN> <SPAN 
class=ps75><NOBR><SPAN class=ft7>效数字串的收集，这样做的目的是在字符串被送到<SPAN 
class=em3>MGC</SPAN>进行进</SPAN></NOBR></SPAN> <SPAN class=ps76><NOBR><SPAN 
class=ft7>一步的分析之前，完成初步的数字分析。与当前设计不匹配的</SPAN></NOBR></SPAN> <SPAN 
class=ps77><NOBR><SPAN class=ft7>字符串不会发送给<SPAN 
class=em3>MG</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps78><NOBR><SPAN 
class=ft7>该参数在端点观察到一个或多个请求事件时，由</SPAN></NOBR></SPAN> <SPAN 
class=ps79><NOBR><SPAN class=ft8>MG<SPAN 
class=em4>送给</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps80><NOBR><SPAN 
class=ft8>MGC</SPAN></NOBR></SPAN> <SPAN class=ps81><NOBR><SPAN 
class=ft7>该参数是对连接性能的一般的统计数据。当连接被删除时由</SPAN></NOBR></SPAN> <SPAN 
class=ps82><NOBR><SPAN class=ft7>端点送出</SPAN></NOBR></SPAN> <SPAN 
class=ps83><NOBR><SPAN class=ft8>RFC821<SPAN 
class=em4>格式的标识符，如</SPAN>EndPoint@hub1.anynet.com<SPAN 
class=em4>：</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps84><NOBR><SPAN 
class=ft8>5625<SPAN class=em4>，</SPAN>[128.32.0.4]</SPAN></NOBR></SPAN> <SPAN 
class=ps85><NOBR><SPAN class=ft7>见表<SPAN 
class=em3>1-8</SPAN>中的说明</SPAN></NOBR></SPAN> <SPAN class=ps86><NOBR><SPAN 
class=ft7>在先前检测到的事件导致<SPAN class=em3>NTFY</SPAN>产生之后、<SPAN 
class=em3>MGC</SPAN>收到<SPAN class=em3>ACK</SPAN>之</SPAN></NOBR></SPAN> <SPAN 
class=ps87><NOBR><SPAN 
class=ft7>前，被请求的事件可以立即发生。这也叫做“状态通知”。关</SPAN></NOBR></SPAN> <SPAN 
class=ps88><NOBR><SPAN class=ft7>键字“<SPAN class=em5>p r o c e s 
s</SPAN>”要求观察到的事件被存储起来，关键字</SPAN></NOBR></SPAN> <SPAN class=ps89><NOBR><SPAN 
class=ft7>“<SPAN class=em3>distinct</SPAN>”要求它们被端点抛弃</SPAN></NOBR></SPAN> <SPAN 
class=ps90><NOBR><SPAN class=ft7>在“通知”状态时<SPAN 
class=em3>MG</SPAN>端点必须检测到的请求事件的最小集</SPAN></NOBR></SPAN> <SPAN 
class=ps91><NOBR><SPAN class=ft7>合。由<SPAN 
class=em3>MGC</SPAN>发送给端点</SPAN></NOBR></SPAN> <SPAN class=ps92><NOBR><SPAN 
class=ft7>这是个可以检查的端点状态列表，必须作为对<SPAN 
class=em3>AuditEndpoint</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps93><NOBR><SPAN 
class=ft7>命令的应答返回给<SPAN class=em3>MGC</SPAN>。例如，<SPAN 
class=em3>ES:hu--</SPAN>表示电话已经摘机</SPAN></NOBR></SPAN> <SPAN 
class=ps94><NOBR><SPAN class=ft7>支持的方法有“&nbsp;<SPAN class=em5>g r a c e f u 
l</SPAN>”、“<SPAN class=em5>f o r c e d</SPAN>”、“<SPAN class=em6>r e s t a r 
t</SPAN>”或</SPAN></NOBR></SPAN> <SPAN class=ps95><NOBR><SPAN class=ft7>“<SPAN 
class=em3>disconnected</SPAN>”。由<SPAN 
class=em3>MG</SPAN>送出，指示端点正在服务或处于服务中</SPAN></NOBR></SPAN> </BODY></HTML>
001_12.htm - 源码说明

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