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<DIV CLASS="navbar"><A HREF="http://vt100.net/"><IMG CLASS="button" SRC="vt100.net-logo.png" ALT="VT100.net" HEIGHT="16" WIDTH="102"></A> VT102 User Guide<TABLE WIDTH="100%">
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<TD ALIGN="LEFT"><A HREF="chapter6.html">Chapter 6</A></TD>
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<TD ALIGN="RIGHT">&nbsp;</TD>
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<TABLE ID="T6-3" CLASS="majortable" FRAME="VOID" RULES="GROUPS" CELLSPACING="0" CELLPADDING="4" BORDERCOLOR="#ffffff">
<CAPTION>Table 6-3 Modem Control Feature Selections</CAPTION>
<THEAD>
<TR VALIGN="BOTTOM">
<TH>Selection</TH>
<TH>Description</TH>
<TH>Usual Application</TH>
</TR>
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<TD>FDX A</TD>
<TD>Full-duplex with no EIA modem control (data leads only)</TD>
<TD>Full-duplex communication with a null modem (direct) connection to the computer
or with a modem that does not use modem control signals.</TD>
</TR>
<TR VALIGN="TOP">
<TD>FDX B</TD>
<TD>Full-duplex with EIA modem control</TD>
<TD>Full-duplex communication with a modem that uses modem control signals.</TD>
</TR>
<TR VALIGN="TOP">
<TD>FDX C</TD>
<TD>Asymmetric full-duplex with EIA modem control</TD>
<TD>Full-duplex communication with a half-duplex modem using the secondary channel.</TD>
</TR>
<TR VALIGN="TOP">
<TD>HDX A</TD>
<TD>Half-duplex supervisory mode</TD>
<TD>Half-duplex communication with the secondary channel control lines indicating when
to perform line turnarounds.</TD>
</TR>
<TR VALIGN="TOP">
<TD>HDX B</TD>
<TD>Half-duplex coded control</TD>
<TD>Half-duplex communication with control characters indicating when to perform line
turnarounds.</TD>
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