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3060/X21
109001UA
P
ATTON
E
LECTRONICS
C
O
.
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
A-2
A
PPENDIX
Typical Application
Connector Pinout
Leased
or
Dial Line
Leased
or
Dial Line
Leased
or
Dial Line
X.21MODEM
MD-X.21/TCB
M D -X .2 1 / T C B
X.21 MODEM
X.21
X.21
X.21 MODEM
X.21
X.21 Controller
Shield (common)
Transmit(A) (from DTE)
Control(A) (from DTE)
Receive(A) (from DCE)
Indication(A) (from DCE)
Signal Timing(A) (from DCE)
GND (common)
Byte Timing(A) (from DCE)
Transmit(B) (from DTE)
Control(B) (from DTE)
Receive(B) (from DCE)
Indication(B) (from DCE)
Signal Timing(B) (from DCE)
Byte Timing(B) (from DCE)
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14
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