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