3Com Router 3016 Installation Manual page 61

X.21 DTE Cable Pinouts
X.21 DCE Cable Pinouts
V.35 DCE cable Pinouts
Table 8
DB-50 Signal
17 NIL/RxC+
41 NIL/RxC-
16 TxCE/TxC+
40 TxCE/TxC-
50 GND
7 GND
24 RxD-REST
49 RxC-REST
25 TxC-REST
Table 9 describes X.21 DTE cable pinouts.
Table 9 X.21 DTE Cable Pinouts
DB50 Signal
7 GND
23 DTE/DCE
50 GND
10 RTS/CTS+
34 RTS/CTS-
38 CTS/RTS+
14 CTS/RTS-
20 RXD/TXD+
44 RXD/TXD-
15 TXD/RXD+
39 TXD/RXD-
19 RXC/TXCE+
43 RXC/TXCE-
- Shielding sheath <-->
Table 10 describes X.21 DCE cable pinouts.
Table 10 X.21 DCE Cable Pinouts
DB50 Signal
7 GND
50 GND
10 RTS/CTS+
34 RTS/CTS-
38 CTS/RTS+
14 CTS/RTS-
20 RXD/TXD+
(continued)
Signal
Direction 34PIN
—> V
—> X
—> Y
—> AA
- A
- B
GND -
GND -
GND -
Signal Direction Signal
<--> Circuit GND
- Circuit GND
<--> Shield GND
-> Control+
-> Control-
<- Indication+
<- Indication-
<- Receiver+
<- Receiver-
-> Transmit+
-> Transmit-
<- Timing+
<- Timing-
Shielding sheath
Signal Direction Signal
<--> Circuit GND
<--> Shield GND
-> Indication+
-> Indication-
<- Control+
<- Control-
<- Transmit+
Serial Interface Cable 61
Signal
SCR+
SCR-
SCT+
SCT-
Shield_GND
Circuit_GND
-
-
-
DB15
8
8
1
3
10
5
12
4
11
2
9
6
13
-
DB15
8
1
5
12
3
10
2