📄 002_22.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）
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<DIV class=im0><IMG height=64 src="002_22.files/left.jpg" width=564 
border=0></DIV>
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<DIV class=im2><IMG height=632 src="002_22.files/002_22_3.jpg" width=558 
border=0></DIV><!-- text starts here --><SPAN class=ps0><NOBR><SPAN 
class=ft0>(<SPAN class=em2>续</SPAN>)</SPAN></NOBR></SPAN> <SPAN 
class=ps1><NOBR>有效载荷编码</NOBR></SPAN> <SPAN class=ps2><NOBR>定</NOBR></SPAN> <SPAN 
class=ps3><NOBR>义</NOBR></SPAN> <SPAN class=ps4><NOBR>事件类型</NOBR></SPAN> <SPAN 
class=ps5><NOBR><SPAN class=ft2>3</SPAN></NOBR></SPAN> <SPAN 
class=ps6><NOBR><SPAN class=ft2>CNG<SPAN class=em0>（</SPAN><SPAN 
class=em0>传真呼叫音调）</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps7><NOBR><SPAN 
class=ft2>4</SPAN></NOBR></SPAN> <SPAN class=ps8><NOBR><SPAN class=ft2>V.21<SPAN 
class=em0>信道</SPAN>1<SPAN class=em0>，</SPAN><SPAN class=em0>第</SPAN>0<SPAN 
class=em0>位（呼叫终端</SPAN>tx<SPAN class=em0>）</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps9><NOBR><SPAN class=ft2>5</SPAN></NOBR></SPAN> <SPAN 
class=ps10><NOBR><SPAN class=ft2>V.21<SPAN class=em0>信道</SPAN>1<SPAN 
class=em0>，</SPAN><SPAN class=em0>第</SPAN>1<SPAN class=em0>位（呼叫终端</SPAN>tx<SPAN 
class=em0>）</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps11><NOBR><SPAN 
class=ft2>6</SPAN></NOBR></SPAN> <SPAN class=ps12><NOBR><SPAN 
class=ft2>V.21<SPAN class=em0>信道</SPAN>2<SPAN class=em0>，</SPAN><SPAN 
class=em0>第</SPAN>0<SPAN class=em0>位（被叫终端</SPAN>tx<SPAN 
class=em0>）</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps13><NOBR><SPAN 
class=ft2>7</SPAN></NOBR></SPAN> <SPAN class=ps14><NOBR><SPAN 
class=ft2>V.21<SPAN class=em0>信道</SPAN>2<SPAN class=em0>，</SPAN><SPAN 
class=em0>第</SPAN>1<SPAN class=em0>位（被叫终端</SPAN>tx<SPAN 
class=em0>）</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps15><NOBR>线路事件</NOBR></SPAN> <SPAN class=ps16><NOBR><SPAN 
class=ft2>0</SPAN></NOBR></SPAN> <SPAN class=ps17><NOBR>摘机</NOBR></SPAN> <SPAN 
class=ps18><NOBR><SPAN class=ft2>1</SPAN></NOBR></SPAN> <SPAN 
class=ps19><NOBR>挂机</NOBR></SPAN> <SPAN class=ps20><NOBR><SPAN 
class=ft2>2</SPAN></NOBR></SPAN> <SPAN class=ps21><NOBR>拨号音调</NOBR></SPAN> <SPAN 
class=ps22><NOBR><SPAN class=ft2>3</SPAN></NOBR></SPAN> <SPAN 
class=ps23><NOBR>内部<SPAN class=em3>PABX</SPAN>拨号音调</NOBR></SPAN> <SPAN 
class=ps24><NOBR><SPAN class=ft2>4</SPAN></NOBR></SPAN> <SPAN 
class=ps25><NOBR>特殊拨号音调</NOBR></SPAN> <SPAN 
class=ps26><NOBR>提示用户在呼叫起点出现了特殊情况</NOBR></SPAN> <SPAN class=ps27><NOBR><SPAN 
class=ft2>5</SPAN></NOBR></SPAN> <SPAN class=ps28><NOBR>第二拨号音调</NOBR></SPAN> 
<SPAN class=ps29><NOBR>这是我们在拨打<SPAN class=em3>*NN</SPAN>服务活动时听</NOBR></SPAN> 
<SPAN class=ps30><NOBR>到的音调。<SPAN class=em3>*69</SPAN>用于用户发起的呼叫</NOBR></SPAN> 
<SPAN class=ps31><NOBR>跟踪</NOBR></SPAN> <SPAN class=ps32><NOBR><SPAN 
class=ft2>6</SPAN></NOBR></SPAN> <SPAN class=ps33><NOBR>振铃音调</NOBR></SPAN> <SPAN 
class=ps34><NOBR><SPAN class=ft2>7</SPAN></NOBR></SPAN> <SPAN 
class=ps35><NOBR>特殊振铃音调</NOBR></SPAN> <SPAN 
class=ps36><NOBR>用于呼叫等待或呼叫转发，将呼叫进</NOBR></SPAN> <SPAN 
class=ps37><NOBR>程通知呼叫者</NOBR></SPAN> <SPAN class=ps38><NOBR><SPAN 
class=ft2>8</SPAN></NOBR></SPAN> <SPAN class=ps39><NOBR>占线音调</NOBR></SPAN> <SPAN 
class=ps40><NOBR><SPAN class=ft2>9</SPAN></NOBR></SPAN> <SPAN 
class=ps41><NOBR>拥塞音调</NOBR></SPAN> <SPAN 
class=ps42><NOBR>通知呼叫者网络正忙，呼叫不能继续</NOBR></SPAN> <SPAN 
class=ps43><NOBR>（也可能是一个录音广播）</NOBR></SPAN> <SPAN class=ps44><NOBR><SPAN 
class=ft2>10</SPAN></NOBR></SPAN> <SPAN class=ps45><NOBR>特殊信息音调</NOBR></SPAN> 
<SPAN class=ps46><NOBR><SPAN class=ft2>11</SPAN></NOBR></SPAN> <SPAN 
class=ps47><NOBR>安慰音调</NOBR></SPAN> <SPAN 
class=ps48><NOBR>表示呼叫正在进行，不必挂断</NOBR></SPAN> <SPAN class=ps49><NOBR><SPAN 
class=ft2>12</SPAN></NOBR></SPAN> <SPAN class=ps50><NOBR>等待音调</NOBR></SPAN> 
<SPAN class=ps51><NOBR><SPAN class=ft2>13</SPAN></NOBR></SPAN> <SPAN 
class=ps52><NOBR>录音音调</NOBR></SPAN> <SPAN class=ps53><NOBR><SPAN 
class=ft2>14</SPAN></NOBR></SPAN> <SPAN class=ps54><NOBR>呼叫者等待音调</NOBR></SPAN> 
<SPAN class=ps55><NOBR><SPAN class=ft2>15</SPAN></NOBR></SPAN> <SPAN 
class=ps56><NOBR>呼叫等待音调</NOBR></SPAN> <SPAN class=ps57><NOBR><SPAN 
class=ft2>16</SPAN></NOBR></SPAN> <SPAN class=ps58><NOBR>付费音调</NOBR></SPAN> 
<SPAN class=ps59><NOBR>通知付费电话的用户：必须付费</NOBR></SPAN> <SPAN class=ps60><NOBR><SPAN 
class=ft2>17</SPAN></NOBR></SPAN> <SPAN class=ps61><NOBR>正指示音调</NOBR></SPAN> 
<SPAN class=ps62><NOBR>通知呼叫方：可以提供他请求的辅助服务</NOBR></SPAN> <SPAN 
class=ps63><NOBR><SPAN class=ft2>18</SPAN></NOBR></SPAN> <SPAN 
class=ps64><NOBR>负指示音调</NOBR></SPAN> <SPAN 
class=ps65><NOBR>通知呼叫方：不能提供他请求的辅助服务</NOBR></SPAN> <SPAN class=ps66><NOBR><SPAN 
class=ft3>78&nbsp;&nbsp;<SPAN class=em1>IP </SPAN><SPAN 
class=em4>电话技术：稳定的</SPAN><SPAN class=em1>VoIP</SPAN><SPAN 
class=em4>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps67><NOBR><SPAN 
class=ft4>文档</SPAN></NOBR></SPAN> <SPAN class=ps68><NOBR><SPAN 
class=ft2>V.21<SPAN class=em0>调值为</SPAN>300bps<SPAN class=em0>。</SPAN>3<SPAN 
class=em0>组传真终端使用</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps69><NOBR><SPAN 
class=ft2>FSK<SPAN class=em0>来协商传输参数和控制交换。</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps70><NOBR><SPAN class=ft2>V.21<SPAN class=em0>的每个位都由自己的</SPAN>300 
bps<SPAN class=em0>的音</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps71><NOBR>调，需要独立发送</NOBR></SPAN> <SPAN 
class=ps72><NOBR>关于这些音调的详细内容，请参考<SPAN class=em3>ITU</SPAN></NOBR></SPAN> <SPAN 
class=ps73><NOBR>文档<SPAN class=em3>E.180/Q.35</SPAN>和<SPAN 
class=em3>E.182</SPAN></NOBR></SPAN> </BODY></HTML>
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