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4.2 «»
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4.3 "PHE
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DUPLEX MULTIPLEX
P1= Dt(T1,T2 T4)
P2= Dt(T1,T4)
P1= Dt(Tx,T2)
P2= Dt(Tx,T4)
P1= Dt(T1 T4,T2)
P2= Dt(T4,T2)
1 x PHE = PX = Dt(Tx,T2 T4)
1 x PHE=PX=Dt(T1,T2 T4)
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