Nortel Secure Router 4134 Installation — Hardware Components page 104

104 Serial cable descriptions
Figure 31
DTE X.21 serial cable
Table 48
DTE X.21 serial cable description
P1 pin P1 signal
1 TXD+
14 TXD–
4 RXC+
17 RXC–
5
RXD+
18
RXD–
8
RTS+
9 RTS–
11
CTS+
10 CTS–
26
GND
Shield
2 TXCE+
3 TXC+
6
DCD+
7
DTR+
12 DSR+
13
LL
15 TXCE–
16 TXC–
19
DCD–
20 DTR–
21 MODE2
22
MODE1
Copyright © 2007, 2008 Nortel Networks
.
Note Direction
→
Twisted
→
pair
←
Twisted
←
pair
←
Twisted
←
pair
→
Twisted
→
pair
←
Twisted
←
pair
—
No connect
No connect
No connect
No connect
No connect
No connect
No connect
No connect
No connect
No connect
GND
No connect
Nortel Secure Router 4134
Installation — Hardware Components
NN47263-301 02.01 Standard
18 February 2008
P2 signal P2 pin
T+ 2
T– 9
S+ 6
S– 13
4
R+
R– 11
3
C+
C– 10
5
I+
I– 12
1
GND
8
Shield