content.htm

来自「ccna」· HTM 代码 · 共 77 行

HTM
77 行
字号 
<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>Content</title>
<base target="contents">
</head>

<body>

<table border="0" width="650" cellspacing="0" cellpadding="0">
  <tr>
    <td colspan="2">
      <table border="0" width="100%" cellspacing="0" cellpadding="0">
        <tr>
          <td width="90%"><font face="Arial" size="3"><font color="#008080"><b><img border="0" src="../../images/arrow_down.gif" width="19" height="12"></b></font></font><b><font size="3" face="Arial" color="#008080">Horizontal
            cabling length limitations </font></b><font face="Arial" size="3"><b><font color="#CCCC00">::</font></b></font></td>
          <td width="10%">
            <p align="right"><font face="Arial" size="3" color="#008080"><b>4/55</b></font></td>
        </tr>
      </table>
    </td>
  </tr>
  <tr>
    <td colspan="2">
      <img border="0" src="../../images/transdot.gif" width="1" height="15"></td>
  </tr>
  <tr>
    <td><img border="0" src="../../images/transdot.gif" width="45" height="1"></td>
    <td><font size="2" face="Arial"><img border="0" src="1_4a.gif" align="right" width="200" height="159">Horizontal
      cabling length limits are based on cable length from the termination of
      the media at the horizontal cross-connect in the telecommunications room
      to the telecommunications outlet/connector in the work area.</font>
      <p><b><font size="2" face="Arial">Requirements</font></b></p>
      <ul>
        <li><font size="2" face="Arial">Maximum horizontal length shall be 90 m
          (295 ft), independent of media type.</font></li>
        <li><font size="2" face="Arial">For each horizontal channel, the total
          length allowed for cords in the work area plus patch cords or jumpers
          plus equipment cables or cords in the telecommunications room shall
          not exceed 10 m (33 ft), unless a multi-user telecommunications outlet
          assembly is used.&nbsp;</font></li>
        <li><font size="2" face="Arial">If a multi-user telecommunications
          outlet assembly (MUTOA) is used, the maximum horizontal distance of
          twisted-pair media shall be reduced in accordance with the open office
          cabling formula, C = (102-H) / 1.2, W = C-5.</font></li>
      </ul>
      <p><font size="2" face="Arial"><b>Recommendations</b></font></p>
      <ul>
        <li><font size="2" face="Arial">The length of the cross-connect jumpers
          and patch cords in the cross-connect facilities, including horizontal
          cross-connects, jumpers, and patch cords that connect horizontal
          cabling with equipment or backbone cabling, should not exceed 5 m (16
          ft) in length.</font></li>
      </ul>
      <p>&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2">
      <table border="0" width="100%" cellspacing="0" cellpadding="0">
        <tr>
          <td width="90%"><img border="0" src="../../images/arrow_up.gif" width="19" height="12"><b><font size="3" face="Arial" color="#008080">Horizontal
            cabling length limitations </font></b><font face="Arial" size="3"><b><font color="#CCCC00">::</font></b></font></td>
          <td width="10%">
            <p align="right"><font face="Arial" size="3" color="#008080"><b>4/55</b></font></td>
        </tr>
      </table>
    </td>
  </tr>
</table>

</body>

</html>

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