⭐ 欢迎来到虫虫下载站！ | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站
📤 上传资源

📄 001_6.htm

📁 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
📖 第 1 页 / 共 2 页
字号:
🔍
12 
	LEFT: 203px; WIDTH: 391px; POSITION: absolute; TOP: 739px
}
.ps67 {
	LEFT: 190px; WIDTH: 155px; POSITION: absolute; TOP: 757px
}
.ps68 {
	LEFT: 341px; WIDTH: 253px; POSITION: absolute; TOP: 755px
}
.ps69 {
	LEFT: 190px; WIDTH: 324px; POSITION: absolute; TOP: 771px
}
.ps70 {
	LEFT: 203px; WIDTH: 137px; POSITION: absolute; TOP: 789px
}
.ft0 {
	FONT-SIZE: 9px; COLOR: #000000; FONT-FAMILY: "Times New Roman",Times,serif
}
.ft1 {
	COLOR: #000000
}
.ft2 {
	FONT-SIZE: 10px; COLOR: #000000; FONT-FAMILY: "Times New Roman",Times,serif
}
.ft3 {
	FONT-SIZE: 13px; COLOR: #000000
}
.ft4 {
	FONT-SIZE: 11px; COLOR: #000000; FONT-FAMILY: Arial,Helvetica,sans-serif
}
.ft5 {
	FONT-WEIGHT: bold; FONT-SIZE: 37px; COLOR: #000000; FONT-STYLE: italic; FONT-FAMILY: "Times New Roman",Times,serif
}
.ft6 {
	FONT-SIZE: 21px; FONT-STYLE: italic; FONT-FAMILY: ""
}
.ft7 {
	FONT-SIZE: 9px; FONT-FAMILY: "Times New Roman",Times,serif
}
.ft9 {
	FONT-SIZE: 5px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em0 {
	FONT-WEIGHT: normal; FONT-SIZE: 13px; FONT-STYLE: italic
}
.em1 {
	FONT-SIZE: 9px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em2 {
	FONT-SIZE: 11px; FONT-FAMILY: ""
}
.em3 {
	FONT-SIZE: 12px; FONT-FAMILY: ""
}
.em4 {
	FONT-SIZE: 11px; FONT-STYLE: italic; FONT-FAMILY: ""
}
.em5 {
	FONT-SIZE: 10px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em6 {
	FONT-SIZE: 13px; FONT-FAMILY: ""
}
.em7 {
	FONT-SIZE: 13px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em8 {
	FONT-WEIGHT: normal; FONT-SIZE: 13px; FONT-STYLE: italic; FONT-FAMILY: ""
}
.im0 {
	LEFT: 37px; WIDTH: 558px; POSITION: absolute; TOP: 118px
}
.im1 {
	LEFT: 37px; WIDTH: 558px; POSITION: absolute; TOP: 142px
}
.im2 {
	LEFT: 37px; WIDTH: 558px; POSITION: absolute; TOP: 810px
}
.im3 {
	LEFT: 39px; WIDTH: 562px; POSITION: absolute; TOP: 24px
}
</STYLE>

<META content="MSHTML 6.00.2600.0" name=GENERATOR></HEAD>
<BODY>
<DIV class=pg></DIV><!-- bitmap and vector images are written here -->
<DIV class=im0><IMG height=3 src="1_6.files/001_2_6_1.jpg" width=558 
border=0></DIV>
<DIV class=im1><IMG height=2 src="1_6.files/001_2_6_2.jpg" width=558 
border=0></DIV>
<DIV class=im2><IMG height=3 src="1_6.files/001_2_6_3.jpg" width=558 
border=0></DIV>
<DIV class=im3><IMG height=64 src="1_6.files/left.jpg" width=564 border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>(<SPAN class=em3>续</SPAN>)</SPAN></NOBR></SPAN> <SPAN 
class=ps1><NOBR><SPAN class=ft1>缩</SPAN></NOBR></SPAN> <SPAN 
class=ps2><NOBR><SPAN class=ft1>写</SPAN></NOBR></SPAN> <SPAN 
class=ps3><NOBR><SPAN class=ft1>意</SPAN></NOBR></SPAN> <SPAN 
class=ps4><NOBR><SPAN class=ft1>义</SPAN></NOBR></SPAN> <SPAN 
class=ps5><NOBR><SPAN class=ft2>MTP</SPAN></NOBR></SPAN> <SPAN 
class=ps6><NOBR><SPAN class=ft2>NCS</SPAN></NOBR></SPAN> <SPAN 
class=ps7><NOBR><SPAN class=ft2>PSTN</SPAN></NOBR></SPAN> <SPAN 
class=ps8><NOBR><SPAN class=ft2>RTP/RTCP</SPAN></NOBR></SPAN> <SPAN 
class=ps9><NOBR><SPAN class=ft2>SCCP</SPAN></NOBR></SPAN> <SPAN 
class=ps10><NOBR><SPAN class=ft2>SCN</SPAN></NOBR></SPAN> <SPAN 
class=ps11><NOBR><SPAN class=ft2>SDP</SPAN></NOBR></SPAN> <SPAN 
class=ps12><NOBR><SPAN class=ft2>SGCP</SPAN></NOBR></SPAN> <SPAN 
class=ps13><NOBR><SPAN class=ft2>SIP</SPAN></NOBR></SPAN> <SPAN 
class=ps14><NOBR><SPAN class=ft2>SS7</SPAN></NOBR></SPAN> <SPAN 
class=ps15><NOBR><SPAN class=ft2>TCAP</SPAN></NOBR></SPAN> <SPAN 
class=ps16><NOBR><SPAN class=ft2>TDM</SPAN></NOBR></SPAN> <SPAN 
class=ps17><NOBR><SPAN class=ft2>TIPHON</SPAN></NOBR></SPAN> <SPAN 
class=ps18><NOBR><SPAN class=ft2>VoIP</SPAN></NOBR></SPAN> <SPAN 
class=ps19><NOBR><SPAN class=ft3>①<SPAN class=em4>通过</SPAN><SPAN 
class=em5>SS7</SPAN><SPAN class=em4>也可以访问紧急服务，但是</SPAN><SPAN 
class=em5>MF</SPAN><SPAN class=em4>是主要的信令方法。</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps20><NOBR><SPAN class=ft4>1.1.2 &nbsp;&nbsp;<SPAN 
class=em6>信令和信令协议</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps21><NOBR><SPAN 
class=ft3>在<SPAN 
class=em7>VoIP</SPAN>电话中术语“信令”的含义并不是非常明显，有必要根据应用环境进行澄清。</SPAN></NOBR></SPAN> 
<SPAN class=ps22><NOBR><SPAN class=ft5>6&nbsp;&nbsp;<SPAN class=em0>IP 
</SPAN><SPAN class=em8>电话技术：稳定的</SPAN><SPAN class=em0>VoIP</SPAN><SPAN 
class=em8>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps23><NOBR><SPAN 
class=ft6>文档</SPAN></NOBR></SPAN> <SPAN class=ps24><NOBR><SPAN 
class=ft7>SS7<SPAN class=em2>协议栈的消息传输部分（<SPAN class=em1>Message Transfer 
Part</SPAN>）</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps25><NOBR>。它为<SPAN 
class=em1>SS7</SPAN>体系结构的上层协</NOBR></SPAN> <SPAN 
class=ps26><NOBR>议产生的信息、网络管理层和<SPAN 
class=em1>MTP</SPAN>层产生的信息提供带错误控制和流量控制传输。</NOBR></SPAN> <SPAN 
class=ps27><NOBR><SPAN class=ft7>MTP<SPAN 
class=em2>有三层：</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps28><NOBR><SPAN 
class=ft7>MTP1 <SPAN class=em2>是物理层，或者信令数据链路（<SPAN class=em1>Signaling Data 
Link</SPAN>，<SPAN class=em1>SDL</SPAN>）</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps29><NOBR><SPAN class=ft7>MTP2 <SPAN class=em2>是链路层部分，或者信令链路（<SPAN 
class=em1>Signaling Link</SPAN>，<SPAN 
class=em1>SL</SPAN>）</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps30><NOBR><SPAN 
class=ft7>MTP3 <SPAN class=em2>是网络层的等价部分，也是与</SPAN>SS7<SPAN 
class=em2>协议栈的上层的接口，如</SPAN>ISUP<SPAN class=em2>、</SPAN>TUP<SPAN 
class=em2>和</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps31><NOBR><SPAN 
class=ft7>SCCP<SPAN class=em2>。它提供网络中的消息路由和重新路由</SPAN></SPAN></NOBR></SPAN> 
<SPAN class=ps32><NOBR><SPAN class=ft7>NCS<SPAN class=em2>是</SPAN>Packet 
Cabel</SPAN></NOBR></SPAN> <SPAN class=ps33><NOBR><SPAN class=ft9>T 
M</SPAN></NOBR></SPAN> <SPAN class=ps34><NOBR>基于网络的呼叫信令（<SPAN 
class=em1>Network-based Call Signaling</SPAN>）的协议</NOBR></SPAN> <SPAN 
class=ps35><NOBR>标准，基于<SPAN class=em1>MGCP</SPAN>协议。它的详细规范可在序号为<SPAN 
class=em1>Pkt-SP-EC-MGCP-I01-990312</SPAN>的文</NOBR></SPAN> <SPAN 
class=ps36><NOBR>档中找到</NOBR></SPAN> <SPAN class=ps37><NOBR>公用交换电话网络（<SPAN 
class=em1>Public Switched Telephone Network</SPAN>）。这是北美和国际有线电</NOBR></SPAN> 
<SPAN class=ps38><NOBR>话网络，提供<SPAN class=em1>TDM</SPAN>连接和用于呼叫建立的<SPAN 
class=em1>SS7</SPAN>信令</NOBR></SPAN> <SPAN class=ps39><NOBR><SPAN 
class=ft7>RTP<SPAN class=em2>是实时传输协议（<SPAN class=em1>Real-time Transport 
Protocol</SPAN>），<SPAN 
class=em1>RTCP</SPAN>是相应的实时传输控</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps40><NOBR>制协议（<SPAN class=em1>Real-time Transport Control 
Protocol</SPAN>）。介质流按照预定的格式打包，并放在</NOBR></SPAN> <SPAN class=ps41><NOBR><SPAN 
class=ft7>RTP<SPAN class=em2>包中。</SPAN>RTP<SPAN 
class=em2>通过排序和盖时间戳来监控对传输的有效载荷。</SPAN>RTCP<SPAN 
class=em2>提供介质流性</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps42><NOBR>能和动态行为的信息，例如介质流的抖动。两种协议都在第<SPAN 
class=em1>2</SPAN>章中讨论</NOBR></SPAN> <SPAN class=ps43><NOBR><SPAN 
class=ft7>SS7<SPAN class=em2>协议栈的信令连接控制部分（<SPAN class=em1>Signaling Connection 
Control Part</SPAN>），这是第</SPAN>4<SPAN class=em2>层</SPAN></SPAN></NOBR></SPAN> 
<SPAN class=ps44><NOBR>的协议，它提供与<SPAN 
class=em1>PSTN</SPAN>干线和电路无关的端到端信令</NOBR></SPAN> <SPAN 
class=ps45><NOBR>交换电路网络（<SPAN class=em1>Switched Circuit Network</SPAN>）。与<SPAN 
class=em1>PSTN</SPAN>同义</NOBR></SPAN> <SPAN class=ps46><NOBR>会话描述协议（<SPAN 
class=em1>Session Description Protocol</SPAN>）。主要由<SPAN 
class=em1>IETF</SPAN>信令协议以被动的方式</NOBR></SPAN> <SPAN class=ps47><NOBR>使用，作为<SPAN 
class=em1>MGC</SPAN>和<SPAN class=em1>MG</SPAN>的信令包中的有效载荷，以交换会话描述和容量信息。<SPAN 
class=em1>SGCP</SPAN>、</NOBR></SPAN> <SPAN class=ps48><NOBR><SPAN 
class=ft7>MGCP<SPAN class=em2>、</SPAN>SIP<SPAN class=em2>中的呼叫建立使用</SPAN>SDP<SPAN 
class=em2>语法。</SPAN>H.323<SPAN class=em2>使用不同的机制</SPAN></SPAN></NOBR></SPAN> 
<SPAN class=ps49><NOBR>简单网关控制协议（<SPAN class=em1>Simple Gateway Control 
Protocol</SPAN>）。一个基于<SPAN class=em1>ASCII</SPAN>字符串的</NOBR></SPAN> <SPAN 
class=ps50><NOBR>信令协议，其本身也是没有状态的。<SPAN class=em1>SGCP</SPAN>是<SPAN 
class=em1>MGCP</SPAN>的基础，<SPAN class=em1>MGCP</SPAN>的<SPAN 
class=em1>PacketCabel</SPAN>版</NOBR></SPAN> <SPAN class=ps51><NOBR>本在<SPAN 
class=em1>NCS</SPAN>的协议规范中定义</NOBR></SPAN> <SPAN class=ps52><NOBR>会话启动协议（<SPAN 
class=em1>Session Initiation Protocol</SPAN>）。一个基于文本、基于<SPAN 
class=em1>IP</SPAN>的协议，用于</NOBR></SPAN> <SPAN 
class=ps53><NOBR>初始化单点或多点会话的初始化和控制议。<SPAN class=em1>SIP</SPAN>在第<SPAN 
class=em1>2</SPAN>章中讨论</NOBR></SPAN> <SPAN class=ps54><NOBR>信令系统<SPAN 
class=em1>7<SPAN class=em2>（</SPAN>Signaling System 7<SPAN 
class=em2>）</SPAN></SPAN>。这是<SPAN 
class=em1>PSTN</SPAN>中用于呼叫建立、撤销和维护的协议</NOBR></SPAN> <SPAN 
class=ps55><NOBR>集合。<SPAN class=em1>SS7</SPAN>也是本文的主题之一</NOBR></SPAN> <SPAN 
class=ps56><NOBR><SPAN class=ft7>SS7<SPAN class=em2>网络的事务性能应用部分（<SPAN 
class=em1>Transaction Capabilities Application 
Part</SPAN>）</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps57><NOBR>。<SPAN 
class=em1>SS7</SPAN>协</NOBR></SPAN> <SPAN class=ps58><NOBR>议体系结构中<SPAN 
class=em1>ISUP</SPAN>的对等协议，用于<SPAN 
class=em1>PSTN</SPAN>网络中与呼叫建立和特定主干无关的端到</NOBR></SPAN> <SPAN 
class=ps59><NOBR>端信令。其主要应用是<SPAN 
class=em1>800</SPAN>免费长途电话在网络上的路由，本地号码可移植性（<SPAN 
class=em1>Local</SPAN></NOBR></SPAN> <SPAN class=ps60><NOBR><SPAN 
class=ft7>Number Portability<SPAN class=em2>，</SPAN>LNP<SPAN 
class=em2>）</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps61><NOBR>、在蜂窝网络中支持移动用户（<SPAN class=em1>Mobile Subscriber</SPAN>，<SPAN 
class=em1>MS</SPAN>）</NOBR></SPAN> <SPAN class=ps62><NOBR>特性，如漫游</NOBR></SPAN> 
<SPAN class=ps63><NOBR>时分多路复用（<SPAN class=em1>Time Division 
Multiplex</SPAN>）。<SPAN class=em1>PSTN</SPAN>使用<SPAN 
class=em1>TDM</SPAN>设备传输语音电话。交</NOBR></SPAN> <SPAN 
class=ps64><NOBR>换局所在的中央局间的<SPAN class=em1>TDM</SPAN>电路在呼叫初始化时建立，通常占用数字层次中的<SPAN 
class=em1>DS-0</SPAN></NOBR></SPAN> <SPAN class=ps65><NOBR>时间槽（<SPAN 
class=em1>64Kbps</SPAN>）</NOBR></SPAN> <SPAN 
class=ps66><NOBR>网络上的电信与因特网协议协调（&nbsp;<SPAN class=em1>Telecommunications and 
Internet Protocol</SPAN></NOBR></SPAN> <SPAN class=ps67><NOBR><SPAN 
class=ft7>Harmonization Over Networks<SPAN 
class=em2>）</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps68><NOBR>。这是个国际化的多赞助商的工程，寻求建立可互相</NOBR></SPAN> <SPAN 
class=ps69><NOBR>操作的服务需求的集合。它还试图定义呼叫控制信令、协议和介质流</NOBR></SPAN> <SPAN 
class=ps70><NOBR><SPAN class=ft7>IP<SPAN class=em2>上的语音（<SPAN class=em1>Voice 
over IP</SPAN>）</SPAN></SPAN></NOBR></SPAN> </BODY></HTML>
12

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -