106 Serial cable descriptions
Table 49
DCE X.21 serial cable description (cont'd.)
Pin 1
P1 signal
3
TXC+
4
RXC+
6
DCD+
7
DTR+
12
DSR+
13
LL
16
TXC–
17
RXC–
19
DCD–
20
DTR–
21
MODE2
22
MODE1
23
MODE0
24
MODE3
25
DSR–
DTE RS-449 serial cable
Order code: SR0018015E6
Figure 33
DTE RS-449 serial cable
Copyright © 2007, 2008 Nortel Networks
.
Note
Direction
No connect
No connect
No connect
No connect
No connect
No connect
No connect
No connect
No connect
No connect
GND
No connect
No connect
No connect
No connect
Nortel Secure Router 4134
Installation — Hardware Components
NN47263-301 02.01 Standard
18 February 2008
P2 signal
Pin 2