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<H2><A NAME="how_modems_work"></A> <A NAME="s19">19.</A> <A HREF="Modem-HOWTO.html#toc19">$BIUO?(B A: ($B5;=QE*$K(B)$B%b%G%`$,$I$N$h$&$KF0:n$9$k$N$+(B ($BL$40@.(B)</A></H2>
<H2><A NAME="modulate_"></A> <A NAME="ss19.1">19.1</A> <A HREF="Modem-HOWTO.html#toc19.1">$BJQD4$N>\:Y(B </A>
</H2>
<H3>$BJQD4$N=xO@(B</H3>
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<H3>$B0LAjJQD4(B</H3>
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Quadrature Amplitude Modulation = QAM $B$H8F$S$^$9(B)$B!#8=:_!"$3$N<jK!$O(B
14.4k, 28.8k, $B$=$7$F(B 33.6k $B$N%b%G%`$G0lHLE*$K;H$o$l$F$$$^$9!#8=:_!"$3(B
$B$NJQD4<jK!$r;H$C$F$$$J$$=EMW$JNc$O(B 56k $B%b%G%`$G$9!#$7$+$7!"(B56k $B%b%G%`(B
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<H3><A NAME="56k_modems"></A> 56k $B%b%G%`(B (v.90) </H3>
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