Table 27 Pinouts for X.21 DTE Cable (Part #3C63924)
Pin # on 60-pin
Signal Name
Connector
Frame GND
46
Circuit GND
15
RTS
9, 10
CTS
1, 2
DSR
DCD
DTR
LL
SD+
11
SD-
12
RD+
28
RD-
27
SCTE+
SCTE-
SCR+
24, 26
SCR-
23, 25
SCT+
SCT-
Shorting GR 1
48, 49
Shorting GR 2
51, 52,
Connector Pinouts
Pin # on DB-25
Direction (for
Connector
Serial Port)
1
8
3, 10
Out
5, 12
In
In
In
Out
Out
2
Out
9
Out
4
In
11
In
Out
Out
6
In
13
In
In
In
229