000
V.35/X.21 BI-DIRECTIONAL INTERFACE CONVERTER
6
Fig. 3-2. Pins Supported.
IC940A
V.35 DCE/X.21 DTE
Schematic Diagram
V.35 (DCE)
FEMALE/MALE
X.21 (DTE)
MALE
Signal GND
Signal GND
B
8
RTS
C-a
C
3
C-b
10
CTS
D
DSR
E
DCD
1-a
F
5
TC-a
S-a
Y
6
TC-b
S-b
AA
13
RC-a
V
RC-b
X
TD-a
T-a
P
2
TD-b
T-b
S
9
RD-a
R-a
R
4
RD-b
R-b
T
11
1-b
12
