[求助]光纤信道问题...

<p>在GB50311中提到的光纤信道等级是什么啊?后面的数字是代报什么意思？请各位大侠解答一下，谢谢了。</p>

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">中国交通招标网</span><span lang="EN-US"><font face="Times New Roman">--</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">我们更加专注于</span><font face="Times New Roman">
                </font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">您所关注的</span><span lang="EN-US"><font face="Times New Roman">
                        </font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Times New Roman">bid.c-cc.cn</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">专业、快速、全面的交通行业招标、采购及中标公示信息，是您了解交通行业招标服务最得力的助手。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">客服</span><span lang="EN-US"><font face="Times New Roman">QQ</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">：</span><span lang="EN-US"><font face="Times New Roman">505725777 msn</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">：</span><span lang="EN-US"><a href="mailto:service@c-cc.cn"><font face="Times New Roman">service@c-cc.cn</font></a><font face="Times New Roman">
                        </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">电话：</span><span lang="EN-US"><font face="Times New Roman">024-83252998 </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">传真：</span><span lang="EN-US"><font face="Times New Roman">024-83252777</font></span></p>

<p>怎么来了个卖广告的啊~~~~~晕</p>