137001UA
A-2
Appendix
P
ATTON
E
LECTRONICS
C
O
.
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
3012-14-18/V24
Typical Application
RS-232 Pin Out
Leased
or
Dial Line
V.24 MODEM
V.24
V.24
V.24
V.24
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Sh ield (c om m o n)
T ran sm it D ata (fro m D TE )
R ece ive D a ta (from D C E )
R eq ues t to Se nd (fro m D TE )
C lear To Se n d (from D C E )
D a ta S e t R e a dy (fro m D C E )
S ign al G ro u nd (c om m on )
D a ta C ar rier D e tect (fro m D C E )
T rans m it C lo ck (fro m D C E )
R ece ive C lo ck (fro m D C E )
D ata Te rm in al R e a dy (fro m D TE )
R ing In dica tor (fro m D C E )
E xte rna l T ran sm it C lo ck (fro m D TE )
P o sitive Tes t V olta g e (from D C E )
N eg ative T es t Vo lta g e (from D C E )