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diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch3/3_1_4/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch3/3_1_4/content.html new file mode 100644 index 0000000..52969d9 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch3/3_1_4/content.html @@ -0,0 +1,183 @@ +<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns="http://www.w3.org/TR/REC-html40">
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+
+
+
+<title>Content</title>
+<base target="_self">
+</head>
+
+<body background="../../images/bg.gif" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0" onLoad="window.focus();" link="#808080" vlink="#808080" alink="#808080">
+
+<table border="0" cellpadding="0" cellspacing="0" width="100%">
+ <tr>
+ <td bgcolor="#336666" width="18" valign="top">
+ <img border="0" src="../../images/content_lines.gif" width="16" height="25">
+ <img border="0" src="../../images/transdot.gif" width="2" height="1"></td>
+ <td bgcolor="#336666"><b><font face="Arial" size="2" color="#FFFFFF">3</font></b><font face="Arial" size="2" color="#FFFFFF"><b>.1</b></font></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%"><strong>
+ <font face="Arial" size="2" color="#FFFFFF">Serial Point-to-Point Links</font></strong></td>
+ <td width="9" bgcolor="#336666"> </td>
+ </tr>
+ <tr>
+ <td bgcolor="#669999" height="25" width="18"> </td>
+ <td bgcolor="#669999" height="25"><b>
+ <font face="Arial" size="2" color="#FFFFFF">3.1.4</font></b></td>
+ <td bgcolor="#669999"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#669999" height="25" width="100%"><strong>
+ <font face="Arial" size="2" color="#FFFFFF">DTE-DCE</font></strong></td>
+ <td bgcolor="#669999" height="25" width="9"> </td>
+ </tr></table>
+
+<table border="0" cellpadding="0" cellspacing="0" width="95%" bordercolor="#111111">
+ <tr>
+ <td width="15"></td>
+ <td>
+
+ <font face="Arial" size="2">A serial connection has a data terminal
+ equipment (DTE) device at one end of the connection and a data
+ communications equipment (DCE) device at the other end. The connection
+ between the two DCEs is the WAN service provider transmission network. The CPE, which is generally a router, is the DTE.
+ Other DTE examples could be a terminal, computer, printer, or fax
+ machine. The DCE, commonly a modem or CSU/DSU, is the device used to
+ convert the user data from the DTE into a form acceptable to the WAN
+ service provider transmission link. This signal is received at the
+ remote DCE, which decodes the signal back into a sequence of bits.
+ This sequence is then signaled to the remote DTE.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"></font><p>
+ <font face="Arial" size="2">Many standards have been developed to
+ allow DTEs to communicate with DCEs. The Electronics Industry
+ Association (EIA) and the International
+ Telecommunication Union Telecommunications Standardization Sector (ITU-T) have been most active
+ in the development of these standards.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"></font></p>
+ <p><font face="Arial" size="2">The DTE-DCE interface for a particular
+ standard defines the following specifications:</font></p>
+ <ul>
+ <li><font face="Arial" size="2"><b>Mechanical/physical</b> – Number
+ of pins and connector type</font></li>
+ <li><font face="Arial" size="2"><b>Electrical</b> – Defines voltage
+ levels for 0 and 1</font></li>
+ <li><font face="Arial" size="2"><b>Functional</b> – Specifies the
+ functions that are performed by assigning meanings to each of the
+ signaling lines in the interface</font></li>
+ <li><font face="Arial" size="2"><b>Procedural</b> – Specifies the
+ sequence of events for transmitting data</font></li>
+ </ul>
+ <p><font face="Arial" size="2">If two DTEs must be connected together,
+ like two computers or two routers in the lab, a special cable called a
+ null-modem is necessary to eliminate the need for a DCE. For
+ synchronous connections, where a clock signal is needed, either an
+ external device or one of the DTEs must generate the clock signal.</font></p>
+ <p><font face="Arial" size="2">The synchronous serial port on a router
+ is configured as DTE or DCE depending on the attached cable, which is
+ ordered as either DTE or DCE to match the router configuration. If the
+ port is configured as DTE, which is the default setting, external
+ clocking is required from the CSU/DSU or other DCE device.</font></p>
+ <p><font face="Arial" size="2">The cable for the DTE to DCE connection
+ is a shielded serial transition cable. The router end of the shielded
+ serial transition cable may be a DB-60 connector, which connects to
+ the DB-60 port on a serial WAN interface card. The other end of the
+ serial transition cable is available with the connector appropriate
+ for the standard that is to be used. The WAN provider or the CSU/DSU
+ usually dictates this cable type. Cisco devices support the EIA/TIA-232,
+ EIA/TIA-449, V.35, X.21, and EIA/TIA-530 serial standards.</font></p>
+ <p><font face="Arial" size="2">To support higher densities in a
+ smaller form factor, Cisco has introduced a smart serial cable. The
+ serial end of the smart serial cable is a 26-pin connector
+ significantly more compact than the DB-60 connector.</font> </p>
+ <TABLE bgcolor="#B0AFAF" width="95%" border="0" cellspacing="0" cellpadding="0">
+ <TR>
+ <TD valign="top">
+ <TABLE bgcolor="#669999" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD><IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+ <a href="javascript:void(0)" onClick="window.open('../zoom3_1_4/zoom3_1_4.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');">
+ <img border="0" src="../../images/media_icon.gif" width="25" height="25"></a> <b>
+ <a onClick="window.open('../zoom3_1_4/zoom3_1_4.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');" href="javascript:void(0)">
+ Interactive Media Activity</a></b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+ <p>PhotoZoom: DCE/DTE Cable</p>
+ <p>In this
+ PhotoZoom, the student will view DCE and DTE cable.</p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><IMG alt="" height="2" width="1" src="../../images/s.gif"></p></TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+
+
+
+
+ <TABLE bgcolor="#B0AFAF" width="95%" border="0" cellspacing="0" cellpadding="0">
+ <TR>
+ <TD valign="top">
+ <TABLE bgcolor="#669999" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD><IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+ <img border="0" src="../../images/links_icon.gif" width="25" height="25">
+ <b>Web Links</b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+
+ <p>High-Speed Serial Interface (HSSI)<p>
+ <a target="_blank" href="http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/hssi.htm">
+ http://www.cisco.com/univercd/cc/
+ td/doc/ cisintwk/ito_doc/ hssi.htm</a></font></p>
+
+ <p>
+ <IMG alt="" height="2" width="1" src="../../images/s.gif"></p>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE><p>
+
+ <font face="Arial" size="2"> </font>
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
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