DEC DECstation 5000 Model 100 Series Hardware Operator's Manual page 258

Table C-3. Communications Connectors Pin Assignments
Pin Source
1
2 KNO2
3 Modem/printer
4 KNO2
5 Modem/printer
6 Modem/printer
7
8 Modem/printer
9
10
11
12
13
14
15
16
17
18
19
20 KNO2
21
22 Modem/printer
23
24
25
1
Comite Consultatif International Telegraphique et Telephonique, an international consultative
committee that sets international communications standards
2
Electronic Industries Association
C–4 Connector Pin Assignments
1
Signal CCITT
GND 102
TX 103
RX 104
RTS 105
CTS 106
DSR 107
GND 102
CD 109
DTR 108.2
RI 125
2
EIA Description
AB Signal ground
BA Modem transmit-
ted data
BB Modem received
data
CA Request to send
CB Clear to send
CC Data set ready
AB Signal ground
CF Carrier detector
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
Unconnected
CD Data terminal
ready
Unconnected
CE Ring indicator
Unconnected
Unconnected
Unconnected