114m
TRANSCRIPT
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PRESENTATION ON
LANDLINE SWITCHING
TECHNOLOGY
Submitted By-
Richa Singh
Monica Tripathi
Ruben Paul
Chhaya Kashyap
Vividh Jain
uided By- Mrs!K!Vasumathy
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"#$T %S &$'(&%') S"%TC#%'*
&andline s+itching is a processby +hich di,erent calls arerouted or connected bet+een
di,erent subscribers at variouslevels +ithin a net+or!
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B&.CK (%$R$M /0 B$S%C
S"%TC#%' T)C#'%12)
S2BSCR%B)R
(P S"%TC#%'
R//MM(0P%&&$R
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"#$T %S $ (P*(P stands 3or (istributionPoint4 +hich is basic unit o3landline s+itching system!
enerally a (P connects 5
subscribers!
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P%&&$RSPillar is the ne6t 7unction o3 thes+itching system!
Several (Ps are connected to asingle pillar!
$ pillar generally connects 8..subscribers!
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M(0M(0 stands 3or Main (istribution0rame!
M(0 is the ne6t 7unction +hichconnects di,erent pillars o3 aparticular area!
M(0 is divided into certain blocs!)ach bloc deals +ith 9..subscribers!
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S"%TC#%' R//M This is the ma7or station o3 thes+itching system!
#ere all the s+itchinge:uipments are located!
$ll inds o3 call routing areper3ormed here!
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T;P)S /0 )<C#$')
&ocal )6change!
Ta6 )6change!
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&/C$& )<C#$')
&ocal )6change handles allthe local call routing!
$ local e6change is limited to
a small area!
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T$< )<C#$')
Ta6 )6change is done in t+olevels!
&evel-94 &evel-=!
Ta6 )6change handles all theST( call routing!
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&)V)&-= )<C#$')
$ll inds o3 local e6changes areaconnected to &evel-= e6change!
&evel-= identi>es the ST( calls
based on area codes andtrans3ers it to the level-9e6change!
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&)V)&-9 )<C#$')$ &evel-9 )6change is lie a big hub
3or all the &evel-= e6change!
%t 3urther determines the incomingcalls 3or 3urther routing by identi3yingthe ST( codes or state codes!
There are t+o setups 3or level-94 sothat routing does not stops in case o33ailures or heavy tra?c!
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T#$'K;/2