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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_22.files/right.jpg" width=563 
border=0></DIV>
<DIV class=im1><IMG height=3 src="003_22.files/003_22_2.jpg" width=558 
border=0></DIV>
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<DIV class=im3><IMG height=425 src="003_22.files/003_22_4.jpg" width=332 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>第<SPAN class=em2>3</SPAN>章&nbsp;语音电话的基本呼叫控制</SPAN></NOBR></SPAN> <SPAN 
class=ps1><NOBR><SPAN class=ft1>121</SPAN></NOBR></SPAN> <SPAN 
class=ps2><NOBR><SPAN class=ft2>文档</SPAN></NOBR></SPAN> <SPAN 
class=ps3><NOBR><SPAN class=ft3>表<SPAN class=em3>3-8 
&nbsp;&nbsp;TCAP</SPAN>消息错误</SPAN></NOBR></SPAN> <SPAN class=ps4><NOBR><SPAN 
class=ft4>TCAP<SPAN class=em0>消息错误</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps5><NOBR>不正确的事务部分—很可能是一个键入错误</NOBR></SPAN> <SPAN 
class=ps6><NOBR>错误结构的事务部分—消息内容的问题</NOBR></SPAN> <SPAN 
class=ps7><NOBR>未分配的响应事务<SPAN class=em4>ID<SPAN 
class=em0>—</SPAN></SPAN>从远程系统返回的<SPAN class=em4>ID</SPAN>没有被承认有效</NOBR></SPAN> 
<SPAN class=ps8><NOBR>释放权限问题—未定义</NOBR></SPAN> <SPAN 
class=ps9><NOBR>资源不可用—不能建立事务</NOBR></SPAN> <SPAN class=ps10><NOBR>不能识别的会话部分<SPAN 
class=em4>ID</SPAN></NOBR></SPAN> <SPAN class=ps11><NOBR>错误结构的会话部分</NOBR></SPAN> 
<SPAN class=ps12><NOBR>缺少会话部分—如果会话部分必须存在但是却没有存在</NOBR></SPAN> <SPAN 
class=ps13><NOBR>不一致的会话部分</NOBR></SPAN> <SPAN class=ps14><NOBR><SPAN 
class=ft6>组件层故障是和协议和操作相关的。协议层故障（创建失败等）通过组件类型标识符中</SPAN></NOBR></SPAN> <SPAN 
class=ps15><NOBR><SPAN class=ft6>的<SPAN 
class=em1>Reject</SPAN>表示。与所请求的操作完成有关的操作故障通过消息组件类型标识符中的</SPAN></NOBR></SPAN> 
<SPAN class=ps16><NOBR><SPAN class=ft7>Return</SPAN></NOBR></SPAN> <SPAN 
class=ps17><NOBR><SPAN class=ft7>Error<SPAN 
class=em5>表示。</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps18><NOBR><SPAN 
class=ft8>3.2.1 &nbsp;&nbsp;<SPAN 
class=em6>高级智能网络中的</SPAN>TCAP</SPAN></NOBR></SPAN> <SPAN class=ps19><NOBR><SPAN 
class=ft6>高级智能网络（<SPAN class=em1>Advance Intelligent Network</SPAN>，<SPAN 
class=em1>AIN</SPAN>）是一种服务控制和网络结构，它允</SPAN></NOBR></SPAN> <SPAN 
class=ps20><NOBR><SPAN 
class=ft6>许本地交换载波从本地交换机将呼叫控制转移到可编程设备上。这种方式在寻求新设备的快</SPAN></NOBR></SPAN> <SPAN 
class=ps21><NOBR><SPAN class=ft9>图<SPAN class=em7>3-18 
&nbsp;&nbsp;</SPAN>简化的<SPAN 
class=em7>AIN</SPAN>基本呼叫模型（起始端点）</SPAN></NOBR></SPAN> <SPAN 
class=ps22><NOBR><SPAN class=ft4>NULL<SPAN 
class=em0>用户挂机</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps23><NOBR>试图发起呼叫如用户摘机</NOBR></SPAN> <SPAN 
class=ps24><NOBR>为发起呼叫尝试授权</NOBR></SPAN> <SPAN class=ps25><NOBR>收集信息<SPAN 
class=em4>(</SPAN>数字<SPAN class=em4>)</SPAN></NOBR></SPAN> <SPAN 
class=ps26><NOBR>数字已被收集</NOBR></SPAN> <SPAN class=ps27><NOBR>分析数字</NOBR></SPAN> 
<SPAN class=ps28><NOBR>数字已被分析</NOBR></SPAN> <SPAN 
class=ps29><NOBR>为呼叫选择路由</NOBR></SPAN> <SPAN class=ps30><NOBR>呼叫建立</NOBR></SPAN> 
<SPAN class=ps31><NOBR>进入振铃状态，然后是通话期</NOBR></SPAN> <SPAN 
class=ps32><NOBR>发送呼叫导致</NOBR></SPAN> <SPAN class=ps33><NOBR>发送<SPAN 
class=em4>ISUP-IAM</SPAN></NOBR></SPAN> <SPAN 
class=ps34><NOBR>放弃呼叫如用户</NOBR></SPAN> <SPAN 
class=ps35><NOBR>恢复挂机状态</NOBR></SPAN> <SPAN 
class=ps36><NOBR>发起呼叫尝试已被授权</NOBR></SPAN> <SPAN 
class=ps37><NOBR>拒绝</NOBR></SPAN> <SPAN class=ps38><NOBR><SPAN 
class=ft4>T/E<SPAN class=em0>网络忙</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps39><NOBR>失败</NOBR></SPAN> <SPAN class=ps40><NOBR>路由忙</NOBR></SPAN> <SPAN 
class=ps41><NOBR>超时</NOBR></SPAN> <SPAN class=ps42><NOBR>拨打了无效</NOBR></SPAN> 
<SPAN class=ps43><NOBR>的字符串</NOBR></SPAN> <SPAN 
class=ps44><NOBR>呼叫建立失败</NOBR></SPAN> </BODY></HTML>

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