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<TITLE>ADSL HOWTO for Linux Systems: $B$I$N$h$&$KF0:n$7$F$$$k$+(B</TITLE>
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<H2><A NAME="s4">4. $B$I$N$h$&$KF0:n$7$F$$$k$+(B</A></H2>
<P>ADSL $B$O$$$/$D$+$NItJ,$+$i@.$jN)$C$F$$$^$9(B($B?^(B 1 $B$H(B 2 $B$r8+$F$/$@$5$$(B)$B!#(B
<P>
<UL>
<LI> ADSL $B%M%C%H%o!<%/=*C<5!4o(B(ANT)$B$H%M%C%H%o!<%/!&%$%s%?!<%U%'!<%9!&(B
$B%+!<%I(B(NIC) </LI>
<LI> $B%9%W%j%C%?!<(B $B$b$7$/$O(B $B%9%W%j%C%?!<$J$7$N9=@.(B</LI>
<LI> DSLAM $B$HEEOC2q<R$N2s@~(B </LI>
<LI> ISP $B@\B3(B </LI>
</UL>
<P>
<PRE>
<!--
Figure 1: ADSL Block Diagram (POTS Splitter)
<-------Home/Office---------------> <-----Telco Central Office---->
NID
----- -----
2 wire X-----------Voice-=| S | | D |
phone | P | | S |=----- Voice Switch
line | L | 2 wire | L |
| I |=-------------=| A |
| T | Local Loop | M |=----- ISP Connection
10baseT ---------- Data | T | | |
Ethernet X--=| |=----=| E | -----
or ---------- | R |
ATMF ADSL -----
NIC ANT
-->
$B?^(B 1: ADSL $B9=@.?^(B($B%9%W%j%C%?!<$"$j(B)
<-------$B2HDm(B/$B;v6H=j(B---------------------> <---$BEEOC2q<RCf1{6IFb(B--->
NID
------ -----
2 $B?D(B X-------------$B2;@<(B--=| $B%9(B | | D |
$BEEOC@~(B | $B%W(B | | S |=--- $B2;@<8r495!(B
| $B%j(B | 2 $B?D(B | L |
| $B%C(B |=-------------=| A |
| $B%?(B | $B2030EEOC2s@~(B | M |=--- ISP $B@\B3(B
10baseT ---------- $B%G!<%?(B | $B!C(B | | |
$B%$!<%5%M%C%H(B X--=| |=------=| | -----
$B$b$7$/$O(B ---------- | |
ATMF ADSL ------
NIC ANT
</PRE>
<H2><A NAME="ss4.1">4.1 $B8\5RC<Kv(B: ADSL ANT $B$H(B NIC</A>
</H2>
<P>ADSL $B$G;HMQ$9$k8\5RC<Kv(B(CPE)$B$O(B ANT $B$H!?$b$7$/$O(B NIC $B$+$i$J$j$^$9!#(B
ADSL $B%M%C%H%o!<%/$N=*C<5!4o(B(ANT)$B$O!"?^(B 1 $B$r8+$F$b$o$+$k$h$&$K2HDm$d;v6H=j(B
$B$K@_CV$5$l$^$9!#$3$l$G(B IP $B@\B3$r9T$$$^$9!#(B
<UL>
<LI> 10/100baseT $B%$%s%?!<%U%'!<%9$r;}$D(B $B%k!<%?!<%?%$%W$N(B ANT</LI>
<LI> 10/100baseT $B%$%s%?!<%U%'!<%9$r;}$D(B $B%V%j%C%8%?%$%W$N(B ANT</LI>
<LI> ATMF $B%$%s%?!<%U%'!<%9$r;}$D(B ANT</LI>
<LI> USB $B%$%s%?!<%U%'!<%9$r;}$D(B ANT</LI>
<LI> ANT $B$H(B NIC $B5!G=$r$"$o$;;}$D%+!<%I(B</LI>
</UL>
<P>$B$I$N>l9g$b!"(BISP $B$X$N%k!<%?$N%"%I%l%9$O(B ANT $B$b$7$/$O(B NIC $B$,Ds6!$7$^$9!#(B
$BEEOC2q<R$O$=$l$>$l8GM-$N@_DjJ}K!$r;XDj$7$F$-$^$9!#(BLinux $B%f!<%6$K$H$C$F(B
$B:GE,$JJ}K!$O!"(B10baseT $B%$%s%?!<%U%'!<%9$r;}$C$?(B ANT $B$rMxMQ$9$k$3$H$G$9!#(B
$BHqMQLL$G$b%;%C%H%"%C%W$N4JC1$5$G$b$3$l$,0lHV$G$9!#$=$NB>$N$b$N$O!"FCJL(B
$B$J%I%i%$%P$rMQ0U$7$J$1$l$P$J$i$:!"$$$^$N$H$3$m(B Linux $B$GMxMQ$9$k$3$H$O(B
$B$G$-$^$;$s!#(B
<B>$BLuCp(B</B>ATM NIC $BMQ$N%I%i%$%P$,3+H/$5$l$F$$$^$9!#>\$7$/$O!"(B
<A HREF="http://icawww1.epfl.ch/linux-atm/">http://icawww1.epfl.ch/linux-atm/</A> $B$r;2>H$7$F$/$@$5$$!#(B
$B;DG0$J$3$H$K!"%W%m%P%$%@$K$h$C$F$O!"(BLinux $B$N%I%i%$%P$,$J$$(B ANT
$B$H(B NIC $B$NN>J}$N5!G=$r$b$D(B PCI $B%+!<%I$7$+G'$a$F$$$J$$$H$3$m$b$"$j$^$9!#(B
<P><B>$B7Y9p(B!</B>$B<+J,$G%5!<%I!&%Q%F%#$N(B ANT/NIC $B%+!<%I$r9XF~$9$k>l9g$O!"(B
$BEEOC2q<R$,MQ0U$9$k$b$N$H8_49@-$,$"$k$b$N$rA*$s$G$/$@$5$$!#(B
ADSL $B$G;HMQ$9$k2s@~%(%s%3!<%IJ}<0$O$*$b$K#2$D$NJ}<0(B(CAP, DMT)$B$,$"$j!"(B
$B$^$?(B IP $B%(%s%-%c%W%7%g%l!<%7%g%s$K$b$$$/$D$+$NJ}<0$,$"$j$^$9!#EEOC2q<R(B
$B$O$I$NJ}<0$,MxMQ2DG=$+$r8x3+$7$F$$$k$O$:$G$9$N$G!"3NG'$7$F$/$@$5$$!#(B
<P>ANT $B$O2HDmFb$NG[@~(B(2 $B?D<0$NEEOC@~(B)$B$K@\B3$5$l!"%9%W%j%C%?$N%G!<%?DL?.B&$K(B
$B$D$J$,$l$^$9!#%9%W%j%C%?!<$,$J$$9=@.$G$O!"2030$NEEOC2q<R$NEEOC@~$KD>7k$7$^$9!#(B
$B?^(B 1 $B$O%9%W%j%C%?!<$"$j!"?^(B 2 $B$O%9%W%j%C%?!<$J$7$N9=@.?^$G$9!#(B
<P>$B;d$N>l9g$O!"(BAlcatel $B$N(B ANT $B$r;Y5k$5$l$^$7$?!#$3$N(B ANT $B$O(B 10baseT($B%/%m%9!&(B
$B%1!<%V%kMQ(B)$B$N(B RJ45 $B$N%8%c%C%/$r;}$C$F$$$^$9!#$=$N$&$AD>@\(B PC $B$K@\B3$G$-$k(B NIC
$B$,MxMQ$G$-$k$h$&$K$J$k$H;W$C$F$$$^$9!#(B
<PRE>
<!--
Figure 2: ADSL Block Diagram (Splitterless Design)
<-------Home/Office---------------> <-----Telco Central Office---->
SNI
- -----
2 wire X-[RJ11]---Voice----| | D |
phone Filter | | S |=----- Voice Switch
line | 2 wire | L |
|=-------------=| A |
| Local Loop | M |=----- ISP Connection
10baseT ---------- Data | | |
Ethernet X--=| |=-----| -----
or ----------
ATMF ADSL
NIC ANT
-->
$B?^(B 2: ADSL $B9=@.?^(B ($B%9%W%j%C%?!<$J$7(B)
<-------$B2HDm(B/$B;v6H=j(B-----------------> <-----$BEEOC2q<RCf1{6IFb(B---->
SNI
- -----
2 $B?D(B X-[RJ11]---$B2;@<(B----------| | D |
$BEEOC@~(B $B%U%#%k%?(B | | S |=----- $B2;@<8r495!(B
| 2 $B?D(B | L |
|=-------------=| A |
| $B2030EEOC2s@~(B | M |=----- ISP $B@\B3(B
10baseT ----------$B%G!<%?(B | | |
$B%$!<%5%M%C%H(B X--=| |=------| -----
$B$b$7$/$O(B ----------
ATMF ADSL
NIC ANT
</PRE>
<H2><A NAME="ss4.2">4.2 $B%9%W%j%C%?!<$"$j!?$J$7$N9=@.$K$D$$$F(B</A>
</H2>
<P>ADSL $B$,F0:n$9$k$?$a$K$O%G%8%?%k?.9f$H%"%J%m%0?.9f$r$I$&$K$+J,N%$9$kI,MW$,(B
$B$"$j$^$9!#$=$N$?$a2s@~$N$I$3$+$KJ,N%$N$?$a$N%U%#%k%?$rF~$l$J$1$l$P$J$j(B
$B$^$;$s!#$=$l$r<B8=$9$k$?$a$K(B 2 $B$D$NJ}K!$,$"$j$^$9!#0l$D$O%9%W%j%C%?!<$r(B
$B@_CV$9$kJ}K!$G!"$b$&0l$D$O(B RJ11 $BEEOCMQ%8%c%C%/$K$D$1$k%U%#%k%?$rMQ0U$9$k(B
$BJ}K!$G$9!#(B
<P>
<P>$B$^$:%9%W%j%C%?!<$r;H$C$?EEOC%5!<%S%9$H$NJ,N%$G$9$,!"EEOC2q<R$N2s@~$,(B
$B0z$+$l$F$$$k!V2H$N30JI!W$K@_CV$7$^$9!#%9%W%j%C%?!<$O(B 2 $B$D$N5!G=$,$"$j!"(B
$B0l$D$OEEOC2q<R$NG[@~$H2HDmFb$NG[@~$rJ,$1$k$?$a$N!V6-3&E@!W$r@_$1$k$3$H$G!"(B
$B$b$&0l$D$O(B $B%G!<%?!&%A%c%M%k$H2;@<%A%c%M%k$rJ,N%$9$k$3$H$K$h$C$FEEOC2q<R(B
$B$+$i$N(B DSL $B?.9f$H2;@<?.9f$r!VJ,$1$k!W$3$H$G$9!#2;@<%A%c%M%k$ODL>o$N%"%J(B
$B%m%0$NEEOC@~(B(2 $B?D(B)$B$G!"%G!<%?!&%A%c%M%k$O(B ANT $B$K$D$J$,$l$^$9!#%9%W%j%C%?!<(B
$B$O<+F0$+$DEE8;ITMW$GF0:n$7$^$9!#2HDm$,DdEE$7$F$b2;@<%A%c%M%k$OF0:n$9$k$O$:(B
$B$G$9!#EEOC2q<R$+$i$N?.9f$O!"4{@_$N(B 2 $B?D$NEEOC@~$r7PM3$7$F%9%W%j%C%?!<$K(B
$BF~$C$F$-$^$9!#$=$N%9%W%j%C%?!<$O2H$N30JI$K@_CV$5$l$F$$$k%M%C%H%o!<%/!&(B
$B%$%s%?!<%U%'!<%9!&%G%P%$%9(B(NID)$B$KAH$_9~$^$l$F$$$^$9!#(B
<P>$B<!$K%9%W%j%C%?!<$J$7$N9=@.$G$9$,!"?^(B 2 $B$r8+$F$$$?$@$1$l$P$o$+$k$h$&$K!"(B
$B2030$NEEOC@~$,D>@\!"2CF~<T%M%C%H%o!<%/!&%$%s%?!<%U%'!<%9(B(SNI)$B$K@\B3$5$l$^$9!#(B
$B$3$l$O$9$G$K2HDm$G;HMQ$5$l$F$$$kEEOC2s@~@\B3$N$?$a$N5!4o$HF1$8$b$N$G$9!#(B
$B%8%c%C%/$,3HD%$5$l$F$$$F!"%"%J%m%0EEOC$r<h$j$D$1$kM=Dj$N%8%c%C%/$K!"%G%8%?%k(B
$B?.9f$r=|5n$9$k$?$a$N%U%#%k%?$,FbB"$5$l$$$kFC<l$J%8%c%C%/$r<hIU$1$^$9!#(B
$B$3$l$O(B RJ11 $B%U%#%k%?$H8F$P$l$F$$$^$9(B(RJ11 $B$O(B 4 $B$b$7$/$O(B 6 $B?D$NEEOC%8%c%C%/(B
$B$r0UL#$9$k!"EEOC2q<R$N8x<0$J8F>N$G$9(B)$B!#$b$&0lJ}$N%8%c%C%/$O(B ANT $B$r@\B3$9$k(B
$B$?$a$N$b$N$G!"%U%#%k%?$OI,MW$"$j$^$;$s(B($B%U%#%k%?$r$D$1$k$HF0:n$7$^$;$s(B)$B!#(B
$B$=$s$J$KFq$7$$$3$H$O$J$$$G$9$h$M!*(B $BDcB.EY$N(B ADSL $B$O(B RJ-11 $B%U%#%k%?$,I,MW(B
$B$J$$>l9g$,$"$k$3$H$b3P$($F$*$$$F$/$@$5$$!#(B
<P>$B%9%W%j%C%?!<$J$7$N9=@.$OEEOC2q<R$K$H$C$F9%ET9g$G$9!#2HDm$X@_Dj$N$?$a$K(B
$B=P8~$/I,MW$,$"$j$^$;$s$7!"Dc$$%3%9%H$G(B ADSL $B$rDs6!$G$-$k$+$i$G$9!#(B
$B$3$l$OMxMQ<T$K$H$C$F$I$&$G$b$$$$$3$H$G$9!#<B:]%"%J%m%0EEOC$O!"(B RJ11
$B%U%#%k%?$rIU$1$J$/$F$b;HMQ$G$-$^$9!#$=$N>l9g$K5$$E$/$3$H$H$$$($P!"EEOC(B
$B$r;H$&;~$K$+$9$+$K9b2;$G%R%e!<$H$$$&2;$,J9$3$($k2DG=@-$,$"$k$3$H$0$i$$(B
$B$G$9!#(B
$B$?$@$7Hf3SE*:G6a$N$b$N$G$9$H!"EEOC5!$K%@%a!<%8$rM?$($?$j!"B>$N$d$C$+$$(B
$B$JLdBj$r5/$3$9>l9g$,$"$k$N$G$*$9$9$a$7$^$;$s!#(B
<P>
<P>
<H2><A NAME="ss4.3">4.3 DSLAM</A>
</H2>
<P>DSLAM $B$OEEOC2q<R$K@_CV$5$l$k5!4o$G!"?.9f$rJ,N%$7$F2;@<8r495!$H(B ISP $B$K(B
$B@\B3$G$-$k$h$&$K$7$^$9!#(B
$B%f!<%6$H$7$FCN$C$F$*$/$Y$-$3$H$O$3$N$0$i$$$G$$$$$H;W$$$^$9!#(B
<H2><A NAME="ss4.4">4.4 ISP $B$H$N@\B3(B</A>
</H2>
<P>ISP $B$H$N4V$O(B DSLAM $B$rDL$7$F9bB.$J%G!<%?!&%3%M%/%7%g%s$r$O$C$F$$$^$9!#DL>o$O(B
ATM over T3 (45Mbps)$B$+(B OC-3 (155Mbps)$B$rMxMQ$7$^$9!#$3$3$GBg@Z$J$3$H$O!"(B
$B$"$J$?$,7@Ls$7$F$$$kEEOC2q<R$H(B ISP $B$,$3$N$h$&$J7@Ls$r7k$s$G$$$k$+$H$$$&(B
$B$3$H$G$9!#(B
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