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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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<DIV class=im12><IMG height=64 src="1_14.files/left.jpg" width=564 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>表<SPAN class=em3>1-5 &nbsp;&nbsp;</SPAN>连接参数类型</SPAN></NOBR></SPAN> 
<SPAN class=ps1><NOBR>连接参数名字</NOBR></SPAN> <SPAN class=ps2><NOBR>代</NOBR></SPAN> 
<SPAN class=ps3><NOBR>码</NOBR></SPAN> <SPAN class=ps4><NOBR>连接参数值</NOBR></SPAN> 
<SPAN class=ps5><NOBR>备</NOBR></SPAN> <SPAN class=ps6><NOBR>注</NOBR></SPAN> 
<SPAN class=ps7><NOBR><SPAN class=ft2>Packets Sent</SPAN></NOBR></SPAN> <SPAN 
class=ps8><NOBR><SPAN class=ft2>PS</SPAN></NOBR></SPAN> <SPAN 
class=ps9><NOBR>连接期间发送的包的总数</NOBR></SPAN> <SPAN class=ps10><NOBR><SPAN 
class=ft2>Octets Sent</SPAN></NOBR></SPAN> <SPAN class=ps11><NOBR><SPAN 
class=ft2>OS</SPAN></NOBR></SPAN> <SPAN 
class=ps12><NOBR>连接期间发送的字节总数</NOBR></SPAN> <SPAN class=ps13><NOBR><SPAN 
class=ft2>Packets Received</SPAN></NOBR></SPAN> <SPAN class=ps14><NOBR><SPAN 
class=ft2>PR</SPAN></NOBR></SPAN> <SPAN 
class=ps15><NOBR>连接期间接收的包的总数</NOBR></SPAN> <SPAN class=ps16><NOBR><SPAN 
class=ft2>Octets Received</SPAN></NOBR></SPAN> <SPAN class=ps17><NOBR><SPAN 
class=ft2>OR</SPAN></NOBR></SPAN> <SPAN 
class=ps18><NOBR>连接期间总共收到的字节数</NOBR></SPAN> <SPAN class=ps19><NOBR><SPAN 
class=ft2>Packets Lost</SPAN></NOBR></SPAN> <SPAN class=ps20><NOBR><SPAN 
class=ft2>PL</SPAN></NOBR></SPAN> <SPAN 
class=ps21><NOBR>连接期间丢失的包的总数，由顺序编号的间隔得到</NOBR></SPAN> <SPAN 
class=ps22><NOBR><SPAN class=ft2>Jitter</SPAN></NOBR></SPAN> <SPAN 
class=ps23><NOBR><SPAN class=ft2>JI</SPAN></NOBR></SPAN> <SPAN 
class=ps24><NOBR>表示到达包到达间的平均抖动</NOBR></SPAN> <SPAN class=ps25><NOBR><SPAN 
class=ft2>Latency</SPAN></NOBR></SPAN> <SPAN class=ps26><NOBR><SPAN 
class=ft2>LA</SPAN></NOBR></SPAN> <SPAN 
class=ps27><NOBR>平均等待时间，以微秒为单位，整数</NOBR></SPAN> <SPAN class=ps28><NOBR><SPAN 
class=ft3>5. <SPAN class=em4>支持的连接模式</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps29><NOBR><SPAN class=ft4>如表<SPAN class=em0>1-6</SPAN>所示，<SPAN 
class=em0>MGCP</SPAN>协议支持多种不同的连接模式。连接模式可以通过<SPAN 
class=em0>MDCX</SPAN>命令和相</SPAN></NOBR></SPAN> <SPAN class=ps30><NOBR><SPAN 
class=ft4>应的参数改变成其他任何模式，该参数可能包含一个新的会话描述符。<SPAN 
class=em0>MG</SPAN>端点也可以不支持</SPAN></NOBR></SPAN> <SPAN class=ps31><NOBR><SPAN 
class=ft4>某些连接模式。在这种情况下，如果请求端点所不支持的模式，在向<SPAN class=em0>CRCX</SPAN>或<SPAN 
class=em0>MDCX</SPAN>的应答</SPAN></NOBR></SPAN> <SPAN class=ps32><NOBR><SPAN 
class=ft4>中将返回相应的错误代码。回送和连续性测试模式是诊断连接模式，但是当相应的<SPAN 
class=em0>SS7</SPAN>特性映</SPAN></NOBR></SPAN> <SPAN class=ps33><NOBR><SPAN 
class=ft4>射到<SPAN class=em0>IP</SPAN>语音网络时，<SPAN 
class=em0>MGC</SPAN>也可以激活该模式，如交换机之间的连续性测试请求。这对使用</SPAN></NOBR></SPAN> <SPAN 
class=ps34><NOBR><SPAN class=ft3>PSTN<SPAN 
class=em1>网关的网络是适用的。</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps35><NOBR><SPAN 
class=ft0>表<SPAN class=em3>1-6 
&nbsp;&nbsp;S/MGCP/NCS</SPAN>的连接模式</SPAN></NOBR></SPAN> <SPAN 
class=ps36><NOBR>模</NOBR></SPAN> <SPAN class=ps37><NOBR>式</NOBR></SPAN> <SPAN 
class=ps38><NOBR>意</NOBR></SPAN> <SPAN class=ps39><NOBR>义</NOBR></SPAN> <SPAN 
class=ps40><NOBR>备</NOBR></SPAN> <SPAN class=ps41><NOBR>注</NOBR></SPAN> <SPAN 
class=ps42><NOBR><SPAN class=ft2>M:sendonly</SPAN></NOBR></SPAN> <SPAN 
class=ps43><NOBR>网关只能在这个连接上发送包</NOBR></SPAN> <SPAN class=ps44><NOBR><SPAN 
class=ft2>S/MGCP</SPAN></NOBR></SPAN> <SPAN class=ps45><NOBR><SPAN 
class=ft2>M:reconly</SPAN></NOBR></SPAN> <SPAN 
class=ps46><NOBR>网关只能在这个连接上接收包</NOBR></SPAN> <SPAN class=ps47><NOBR><SPAN 
class=ft2>S/MGCP</SPAN></NOBR></SPAN> <SPAN class=ps48><NOBR><SPAN 
class=ft2>M:sendrcv</SPAN></NOBR></SPAN> <SPAN 
class=ps49><NOBR>网关在这个连接上既可以发送包，也可以接收包</NOBR></SPAN> <SPAN 
class=ps50><NOBR><SPAN class=ft2>S/MGCP</SPAN></NOBR></SPAN> <SPAN 
class=ps51><NOBR><SPAN class=ft2>M:confrnce</SPAN></NOBR></SPAN> <SPAN 
class=ps52><NOBR>根据会议模式，网关在这个连接上既可以发送包，也</NOBR></SPAN> <SPAN 
class=ps53><NOBR><SPAN class=ft2>NCS</SPAN></NOBR></SPAN> <SPAN 
class=ps54><NOBR>可以接收包</NOBR></SPAN> <SPAN class=ps55><NOBR><SPAN 
class=ft2>M:inactive</SPAN></NOBR></SPAN> <SPAN 
class=ps56><NOBR>网关在这个连接上既不可以发送包，也不可以接收包</NOBR></SPAN> <SPAN 
class=ps57><NOBR><SPAN class=ft2>S/MGCP</SPAN></NOBR></SPAN> <SPAN 
class=ps58><NOBR><SPAN class=ft2>M:netwloop</SPAN></NOBR></SPAN> <SPAN 
class=ps59><NOBR>端点应设置成网络回送模式</NOBR></SPAN> <SPAN class=ps60><NOBR><SPAN 
class=ft2>S/MGCP</SPAN></NOBR></SPAN> <SPAN class=ps61><NOBR><SPAN 
class=ft2>M:netwtest</SPAN></NOBR></SPAN> <SPAN 
class=ps62><NOBR>端点应设置成网络连续性测试模式</NOBR></SPAN> <SPAN class=ps63><NOBR><SPAN 
class=ft2>S/MGCP</SPAN></NOBR></SPAN> <SPAN class=ps64><NOBR><SPAN 
class=ft4>命令报头中的<SPAN class=em0>RequestEvents</SPAN>参数包含<SPAN 
class=em0>MG</SPAN>要搜索的事件列表。表<SPAN 
class=em0>1-7</SPAN>列出了当发生事件时</SPAN></NOBR></SPAN> <SPAN class=ps65><NOBR><SPAN 
class=ft3>MG<SPAN 
class=em1>的通知方法。命令中所有的请求事件按照它们发生时的惟一的申请号产生一个通知。</SPAN></SPAN></NOBR></SPAN> 
<SPAN class=ps66><NOBR><SPAN class=ft0>表<SPAN class=em3>1-7 
&nbsp;&nbsp;RequestedEvents</SPAN>条件</SPAN></NOBR></SPAN> <SPAN 
class=ps67><NOBR>动</NOBR></SPAN> <SPAN class=ps68><NOBR>作</NOBR></SPAN> <SPAN 
class=ps69><NOBR>编</NOBR></SPAN> <SPAN class=ps70><NOBR>码</NOBR></SPAN> <SPAN 
class=ps71><NOBR>立即通知</NOBR></SPAN> <SPAN class=ps72><NOBR><SPAN 
class=ft2>N</SPAN></NOBR></SPAN> <SPAN class=ps73><NOBR>聚集起来</NOBR></SPAN> <SPAN 
class=ps74><NOBR><SPAN class=ft2>A</SPAN></NOBR></SPAN> <SPAN 
class=ps75><NOBR>根据数字映像聚集起来</NOBR></SPAN> <SPAN class=ps76><NOBR><SPAN 
class=ft2>D</SPAN></NOBR></SPAN> <SPAN class=ps77><NOBR>忽略</NOBR></SPAN> <SPAN 
class=ps78><NOBR><SPAN class=ft2>I</SPAN></NOBR></SPAN> <SPAN 
class=ps79><NOBR>信号保持有效</NOBR></SPAN> <SPAN class=ps80><NOBR><SPAN 
class=ft2>K</SPAN></NOBR></SPAN> <SPAN class=ps81><NOBR>内嵌<SPAN 
class=em5>NatificationRequest</SPAN></NOBR></SPAN> <SPAN class=ps82><NOBR><SPAN 
class=ft2>E</SPAN></NOBR></SPAN> <SPAN class=ps83><NOBR><SPAN class=ft4>表<SPAN 
class=em0>1-8</SPAN>中的<SPAN class=em0>RequestedInfo</SPAN>参数允许<SPAN 
class=em0>MGC</SPAN>获得<SPAN class=em0>MG</SPAN>端点的当前状态的信息，如<SPAN 
class=em0>NotifiedEntity<SPAN class=em1>，</SPAN></SPAN></SPAN></NOBR></SPAN> 
<SPAN class=ps84><NOBR><SPAN class=ft3>RequstedEvents<SPAN 
class=em1>，</SPAN>DigitMap<SPAN 
class=em1>等。这两个代码允许查询本地和远程连接的描述符。</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps85><NOBR><SPAN class=ft0>表<SPAN class=em3>1-8 
&nbsp;&nbsp;RequestedInfo</SPAN>参数</SPAN></NOBR></SPAN> <SPAN 
class=ps86><NOBR><SPAN class=ft2>RequestedInfo<SPAN 
class=em6>参数</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps87><NOBR>编</NOBR></SPAN> 
<SPAN class=ps88><NOBR>码</NOBR></SPAN> <SPAN class=ps89><NOBR><SPAN 
class=ft2>LocalConnectionDescriptor</SPAN></NOBR></SPAN> <SPAN 
class=ps90><NOBR><SPAN class=ft2>LC</SPAN></NOBR></SPAN> <SPAN 
class=ps91><NOBR><SPAN class=ft2>RemoteConnectionDescriptor</SPAN></NOBR></SPAN> 
<SPAN class=ps92><NOBR><SPAN class=ft2>RC</SPAN></NOBR></SPAN> <SPAN 
class=ps93><NOBR><SPAN class=ft5>14&nbsp;&nbsp;<SPAN class=em2>IP </SPAN><SPAN 
class=em7>电话技术：稳定的</SPAN><SPAN class=em2>VoIP</SPAN><SPAN 
class=em7>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps94><NOBR><SPAN 
class=ft6>文档</SPAN></NOBR></SPAN> </BODY></HTML>
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