003_13.htm

来自「通讯类的标准。对要开发SS7的朋友有很大帮助的。（通讯协议）」· HTM 代码 · 共 276 行

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<DIV class=im0><IMG height=64 src="003_13.files/left.jpg" width=564 
border=0></DIV>
<DIV class=im1><IMG height=3 src="003_13.files/003_13_2.jpg" width=558 
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<DIV class=im4><IMG height=441 src="003_13.files/003_13_5.jpg" width=505 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>112&nbsp;&nbsp;<SPAN class=em0>IP </SPAN><SPAN 
class=em2>电话技术：稳定的</SPAN><SPAN class=em0>VoIP</SPAN><SPAN 
class=em2>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>消息的一个重要的子集，用于呼叫控制和交换机之间的监控功能。在设计具有到<SPAN 
class=em3>PSTN</SPAN>服务接</SPAN></NOBR></SPAN> <SPAN class=ps3><NOBR><SPAN 
class=ft2>入的基于包的电话网络时，一个重要的考虑就是提供两种类型的信令协议之间的充分协作。</SPAN></NOBR></SPAN> <SPAN 
class=ps4><NOBR><SPAN 
class=ft2>在本章稍后将讨论这种协作的情况，以及在所提供的服务的可靠性方面出现的一些问题。</SPAN></NOBR></SPAN> <SPAN 
class=ps5><NOBR><SPAN class=ft3>图<SPAN class=em4>3-13 &nbsp;&nbsp;</SPAN>使用<SPAN 
class=em4>ISDN</SPAN>信令的<SPAN class=em4>SS7</SPAN>呼叫建立和终止</SPAN></NOBR></SPAN> 
<SPAN class=ps6><NOBR><SPAN class=ft4>表<SPAN class=em5>3-3 
&nbsp;&nbsp;Q.931</SPAN>电路模式连接消息</SPAN></NOBR></SPAN> <SPAN 
class=ps7><NOBR><SPAN class=ft5>Q.931</SPAN></NOBR></SPAN> <SPAN 
class=ps8><NOBR>意</NOBR></SPAN> <SPAN class=ps9><NOBR>义</NOBR></SPAN> <SPAN 
class=ps10><NOBR>备</NOBR></SPAN> <SPAN class=ps11><NOBR>注</NOBR></SPAN> <SPAN 
class=ps12><NOBR>电路模式消息编码</NOBR></SPAN> <SPAN class=ps13><NOBR><SPAN 
class=ft5>ALERTING</SPAN></NOBR></SPAN> <SPAN class=ps14><NOBR><SPAN 
class=ft5>CALL</SPAN></NOBR></SPAN> <SPAN class=ps15><NOBR><SPAN 
class=ft5>PROCEEDING</SPAN></NOBR></SPAN> <SPAN class=ps16><NOBR><SPAN 
class=ft5>CONNECT</SPAN></NOBR></SPAN> <SPAN class=ps17><NOBR><SPAN 
class=ft5>CONNECT </SPAN></NOBR></SPAN><SPAN class=ps18><NOBR><SPAN 
class=ft5>ACKNOWLEDGE</SPAN></NOBR></SPAN> <SPAN 
class=ps19><NOBR>被叫方已被通知有呼叫进入。这是</NOBR></SPAN> <SPAN 
class=ps20><NOBR>一个由被叫方发起的全局消息，通过</NOBR></SPAN> <SPAN 
class=ps21><NOBR>网络传播</NOBR></SPAN> <SPAN class=ps22><NOBR>已经收到<SPAN 
class=em1>SETUP</SPAN>消息，开始呼叫</NOBR></SPAN> <SPAN 
class=ps23><NOBR>处理</NOBR></SPAN> <SPAN 
class=ps24><NOBR>设置连接。这是一个全局消息，从</NOBR></SPAN> <SPAN 
class=ps25><NOBR>被叫方发送到网络，并回到呼叫方</NOBR></SPAN> <SPAN 
class=ps26><NOBR>这条消息确认收到<SPAN 
class=em6>C&nbsp;O&nbsp;N&nbsp;N&nbsp;E&nbsp;C&nbsp;T</SPAN>消</NOBR></SPAN> 
<SPAN class=ps27><NOBR>息，局部有效，呼叫已经建立</NOBR></SPAN> <SPAN 
class=ps28><NOBR>接收到来自远程端点的<SPAN class=em1>ACM</SPAN></NOBR></SPAN> <SPAN 
class=ps29><NOBR>消息后，<SPAN class=em1>CCS</SPAN>网络发送这条消息</NOBR></SPAN> <SPAN 
class=ps30><NOBR>到<SPAN class=em1>ISDN</SPAN>端点</NOBR></SPAN> <SPAN 
class=ps31><NOBR>当呼叫转发起作用，呼叫被重</NOBR></SPAN> <SPAN 
class=ps32><NOBR>定向时可能会发送这条消息。它</NOBR></SPAN> <SPAN 
class=ps33><NOBR>只在从被叫用户到网络的局部内</NOBR></SPAN> <SPAN 
class=ps34><NOBR>有效</NOBR></SPAN> <SPAN class=ps35><NOBR>用户已经应答了呼叫</NOBR></SPAN> 
<SPAN class=ps36><NOBR>从被叫方发送到网络，并从网</NOBR></SPAN> <SPAN 
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class=em1>1</SPAN></NOBR></SPAN> <SPAN class=ps39><NOBR>呼叫建立</NOBR></SPAN> <SPAN 
class=ps40><NOBR>用户<SPAN class=em1>2</SPAN></NOBR></SPAN> <SPAN 
class=ps41><NOBR>起始本地交</NOBR></SPAN> <SPAN class=ps42><NOBR>换机</NOBR></SPAN> 
<SPAN class=ps43><NOBR>运输交换机</NOBR></SPAN> <SPAN 
class=ps44><NOBR>通常要求电路</NOBR></SPAN> <SPAN class=ps45><NOBR>连续性测试</NOBR></SPAN> 
<SPAN class=ps46><NOBR>振铃</NOBR></SPAN> <SPAN 
class=ps47><NOBR>终止本地交换机</NOBR></SPAN> </BODY></HTML>

003_13.htm - 源码说明

本页面展示了「通讯类的标准。对要开发SS7的朋友有很大帮助的。（通讯协议）」中的 003_13.htm 源码文件，采用 HTM 编程语言编写，共 276 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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