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标题: 关于高阶通道开销处理的疑惑 [查看完整版帖子] [打印本页]

时间: 2007-2-6 22:53

作者: fans008 标题: 关于高阶通道开销处理的疑惑

<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">根据通常的理解，交叉连接（高阶）是<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">VC4<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">级别的，也就是说是带高阶开销一起交叉过去。且<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">HPC<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">是不处理开销的，<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">HPOH<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的处理都是在<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">HPT<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">上。那么我就有个疑问：整个高阶通道，可能经过若干个网元，对于这样的高阶通道开销是只在头尾两端处理还是有多个开销终结再生点？

<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">按照华为功能模块的分析是这样的<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">SDH信号------SPI接口--RST--MST--MSP--MSA-----HPC<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">

DH140M信号--PPI接口--LPA--HPT---------------HPC<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">

DH2M信号----PPI接口-LPA-LPT--LPC--HPA--HPT--HPC<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">按照它的理解,高阶通道开销一定要到PDH的过程中才取出来,也就是说纯粹的SDH信号流中是没有HPT功能块去检测HPOH的,我觉得这肯定不可能吧,可是又找不出其他理由驳斥它,请各位专家帮忙分析一下.

[此贴子已经被作者于2007-2-7 20:28:24编辑过]

时间: 2007-2-7 09:34

作者: huangvbo

一般情况下HPOH是在中间网元穿通的，也就是开销穿通模式

时间: 2007-2-7 10:04

作者: YoungEver

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用fans008在2007-2-6 22:53:00的发言： <span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">根据通常的理解，交叉连接（高阶）是<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">VC4<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">级别的，也就是说是带高阶开销一起交叉过去。且<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">HPC<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">是不处理开销的，<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">HPOH<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的处理都是在<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">HPT<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">上。那么我就有个疑问：整个高阶通道，可能经过若干个网元，对于这样的高阶通道开销是只在头尾两端处理还是有多个开销终结再生点？

</div>是的.只要VC4或VC12没有打散或是解出,开销就不处理.只是穿通模式.相同的,指针也是吧.

时间: 2007-2-7 10:44

作者: fans008

谢谢楼上的解答,按照你的解释,如果中间网元选择了穿通模式,那就不处理HPOH,否则还是要处理这些开销的,是这样吗?那就是说SDH单板上都是存在HPT模块,应该是在HPA模块和交叉板之间.如果这样的话,又有疑问了...在最后一个网元上可能有两种模式:(如果最后经过的网元对该高阶通道以VC12为终结,那么毫无疑问高阶通道开销肯定在交叉板前的HPT被终结分析了(如果最后经过的网元对该高阶通道以VC4为终结,通道交叉矩阵到某155口直接给用户了,那这个开销怎么检测呢?是要手工把最后一段的HPT改为终结模式吗?

时间: 2007-2-7 11:00

作者: YoungEver

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用fans008在2007-2-7 10:44:00的发言： 谢谢楼上的解答,按照你的解释,如果中间网元选择了穿通模式,那就不处理HPOH,否则还是要处理这些开销的,是这样吗?那就是说SDH单板上都是存在HPT模块,应该是在HPA模块和交叉板之间.如果这样的话,又有疑问了...在最后一个网元上可能有两种模式:(如果最后经过的网元对该高阶通道以VC12为终结,那么毫无疑问高阶通道开销肯定在交叉板前的HPT被终结分析了(如果最后经过的网元对该高阶通道以VC4为终结,通道交叉矩阵到某155口直接给用户了,那这个开销怎么检测呢?是要手工把最后一段的HPT改为终结模式吗?</div>VC12和VC4 信号内容最后都是在PPI端口输出的。就是PDH信号，那时候已经从复用和映射中解出来了。是否已经说清楚了呢？呵呵。

时间: 2007-2-7 11:08

作者: fans008

我的意思是传输纯SDH信号啊,不是140MPDH信号...应该和PDH无关吧.

[此贴子已经被作者于2007-2-7 11:19:33编辑过]

时间: 2007-2-7 11:18

作者: fans008

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用huangvbo在2007-2-7 9:34:00的发言： 一般情况下HPOH是在中间网元穿通的，也就是开销穿通模式</div>如果都选开销终结模式呢?每个网元都会处理并且再生?

时间: 2007-4-14 16:48

作者: erling

学习中，

时间: 2007-4-14 17:23

作者: happyzsh

前面的误导人家了．．．．书上的东西毕竟都是理论的，和实际时有差异的．高阶通道的开销在每个网元都要处理的．正确的说法是应该提到各个光板是否处理ＶＣ４的通道开销，各个支路板是否处理ＶＣ４的通道开销．－－－这些板一般都会要求处理ＶＣ４的通道开销．因此楼主的问题就很容易回答了．每个网元都会处理ＶＣ４的通道开销．（实际上是光板或者支路板来处理）．

时间: 2007-4-19 20:36

作者: atm800624

不知道大家有没有注意到，在配置VC4级别时有一个选项就是选择是否终结开销。所以说这是有选择的，

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