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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=pg></DIV><!-- bitmap and vector images are written here -->
<DIV class=im0><IMG height=64 src="003_17.files/left.jpg" width=564 
border=0></DIV>
<DIV class=im1><IMG height=581 src="003_17.files/003_17_2.jpg" width=549 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>116&nbsp;&nbsp;<SPAN class=em0>IP </SPAN><SPAN 
class=em3>电话技术：稳定的</SPAN><SPAN class=em0>VoIP</SPAN><SPAN 
class=em3>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps1><NOBR><SPAN 
class=ft1>文档</SPAN></NOBR></SPAN> <SPAN class=ps2><NOBR><SPAN 
class=ft2>信用卡呼叫的信息查找、将免费或<SPAN 
class=em1>900</SPAN>号码转换成可路由号码、支持本地号码可移植性、与无</SPAN></NOBR></SPAN> <SPAN 
class=ps3><NOBR><SPAN class=ft2>线网络的交互服务以及其他高级网络功能和用户特性。这些类型的网络服务使用<SPAN 
class=em1>SS7</SPAN>信令，但</SPAN></NOBR></SPAN> <SPAN class=ps4><NOBR><SPAN 
class=ft2>是不和呼叫使用的语音带电路直接相关。通过信令服务控制点（&nbsp;<SPAN class=em1>Signaling Service 
Control</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps5><NOBR><SPAN 
class=ft3>Point<SPAN class=em2>，</SPAN>SGCP<SPAN class=em2>）</SPAN><SPAN 
class=em2>层，<SPAN class=em1>SS7</SPAN>协议栈可以和其他</SPAN>SS7<SPAN 
class=em2>节点、中央局后系统进行与电路无关的消息交</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps6><NOBR><SPAN class=ft2>换。<SPAN class=em1>SCCP</SPAN>协议层位于<SPAN 
class=em1>STP</SPAN>中。</SPAN></NOBR></SPAN> <SPAN class=ps7><NOBR><SPAN 
class=ft4>图<SPAN class=em1>3-14 &nbsp;&nbsp;SCCP</SPAN>层的结构</SPAN></NOBR></SPAN> 
<SPAN class=ps8><NOBR><SPAN class=ft3>SSCP<SPAN class=em2>占据了</SPAN>SS7<SPAN 
class=em2>协议栈的第</SPAN>4<SPAN class=em2>层，图</SPAN>3-14<SPAN 
class=em2>中是这一层的内部结构。</SPAN>SCCP<SPAN 
class=em2>层向应用服务单</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps9><NOBR><SPAN 
class=ft2>元（<SPAN class=em1>Application Service Element</SPAN>，<SPAN 
class=em1>ASE</SPAN>）提供的服务是公用电话网操作的基础，它有望继续</SPAN></NOBR></SPAN> <SPAN 
class=ps10><NOBR><SPAN class=ft2>应用在基于<SPAN 
class=em1>IP</SPAN>的电话提供的公用服务中。设计问题的中心在公用网的<SPAN 
class=em1>IP</SPAN>信令机制中集成已有</SPAN></NOBR></SPAN> <SPAN class=ps11><NOBR><SPAN 
class=ft2>的<SPAN class=em1>SS7</SPAN>协议栈。其目标是让传统的<SPAN 
class=em1>TDM</SPAN>电话和包网络协作，同时继续支持<SPAN 
class=em1>PSTN</SPAN>上已经可用的</SPAN></NOBR></SPAN> <SPAN 
class=ps12><NOBR>应用服务元件</NOBR></SPAN> <SPAN class=ps13><NOBR><SPAN 
class=ft6>(ASE)</SPAN></NOBR></SPAN> <SPAN class=ps14><NOBR><SPAN 
class=ft6>ISUP(<SPAN class=em4>直接的</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps15><NOBR><SPAN class=ft6>SCCP<SPAN 
class=em4>用户</SPAN>)</SPAN></NOBR></SPAN> <SPAN class=ps16><NOBR><SPAN 
class=ft6>SCCP<SPAN class=em4>的间接用户</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps17><NOBR>应用服务元件</NOBR></SPAN> <SPAN class=ps18><NOBR><SPAN 
class=ft6>(ASE)</SPAN></NOBR></SPAN> <SPAN class=ps19><NOBR><SPAN 
class=ft6>ASE<SPAN class=em4>同等</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps20><NOBR><SPAN class=ft6>TCAP<SPAN 
class=em4>同等</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps21><NOBR>状态和协</NOBR></SPAN> <SPAN class=ps22><NOBR>调交换</NOBR></SPAN> 
<SPAN class=ps23><NOBR>单元数据</NOBR></SPAN> <SPAN 
class=ps24><NOBR>连接</NOBR></SPAN> <SPAN class=ps25><NOBR>无连接</NOBR></SPAN> <SPAN 
class=ps26><NOBR>重置</NOBR></SPAN> <SPAN class=ps27><NOBR>通知</NOBR></SPAN> <SPAN 
class=ps28><NOBR>数据</NOBR></SPAN> <SPAN class=ps29><NOBR><SPAN 
class=ft6>SCCP<SPAN class=em4>管理</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps30><NOBR>SCM</NOBR></SPAN> <SPAN class=ps31><NOBR>G</NOBR></SPAN> <SPAN 
class=ps32><NOBR><SPAN class=ft6>SCCP</SPAN></NOBR></SPAN> <SPAN 
class=ps33><NOBR>无连接控制</NOBR></SPAN> <SPAN class=ps34><NOBR><SPAN 
class=ft6>SCCP</SPAN></NOBR></SPAN> <SPAN class=ps35><NOBR>面向连接的控制</NOBR></SPAN> 
<SPAN class=ps36><NOBR>面向连接的消息</NOBR></SPAN> <SPAN 
class=ps37><NOBR>SCRC指示</NOBR></SPAN> <SPAN class=ps38><NOBR>无连接消息</NOBR></SPAN> 
<SPAN class=ps39><NOBR>SCRC</NOBR></SPAN> <SPAN class=ps40><NOBR>指</NOBR></SPAN> 
<SPAN class=ps41><NOBR>示</NOBR></SPAN> <SPAN 
class=ps42><NOBR>MTP消息暂停，重</NOBR></SPAN> <SPAN 
class=ps43><NOBR>新开始和状态指示</NOBR></SPAN> <SPAN 
class=ps44><NOBR>本地路由的MTP消息</NOBR></SPAN> <SPAN 
class=ps45><NOBR>如果不需要地址转换</NOBR></SPAN> <SPAN 
class=ps46><NOBR>MTP消息</NOBR></SPAN> <SPAN class=ps47><NOBR>MTP消息</NOBR></SPAN> 
<SPAN class=ps48><NOBR>需要路由转换或终止在这个节</NOBR></SPAN> <SPAN 
class=ps49><NOBR>点上的SCCP或SCCP用户的</NOBR></SPAN> <SPAN 
class=ps50><NOBR>MTP消息</NOBR></SPAN> <SPAN class=ps51><NOBR>到远程节点的</NOBR></SPAN> 
<SPAN class=ps52><NOBR>TCAP/SUP</NOBR></SPAN> <SPAN 
class=ps53><NOBR>/SCCP消息</NOBR></SPAN> <SPAN 
class=ps54><NOBR>子系统和点</NOBR></SPAN> <SPAN class=ps55><NOBR>码管理</NOBR></SPAN> 
<SPAN class=ps56><NOBR>实体</NOBR></SPAN> <SPAN class=ps57><NOBR>实体</NOBR></SPAN> 
<SPAN class=ps58><NOBR><SPAN class=ft6>TCAP</SPAN></NOBR></SPAN> <SPAN 
class=ps59><NOBR>事务性能应用部件</NOBR></SPAN> </BODY></HTML>

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