· pdf file7sd610. x.21 g703.1 rx tx tx rx communication-system isdn*) isdn x.21 g703.1 o e e...
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2
3
CT1 CT2
4
5
7XV5662-0AC00
7SD610
X.21G703.1
Rx Tx
Tx Rx
Communication-system
ISDN *)
ISDN
X.21G703.1
ISDN
EOE O
OOE
E
lub
6
7
Terminal 2
I2
Terminal 1
Terminal 3
I3
I1
Terminal 2
I2
Terminal 1
Terminal 3
I3
I1
I1+ I2
I3+ I1
I3+I1I1+I2
I2
I3
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