Cables and Connectors
Cable and Connector Pin-Outs
RS-232 WAN Cable—Minimum Pin-Outs
WAN link end
25-pin male
The maximum cable length is 15 meters (50 feet).
A-12
Router end
EIA and Signal Name
62-pin male
2
59
BA
3
1
BB
4
57
CA
5
4
CB
6
46
CC
7
9
AB
22-27
47
30
31
52
8
6
CF
12
28
13
7
14
13
15
2
DB
16
49
17
3
DD
19
12
20
58
CD
21
29
22
48
23
55
24
56
DA
Send Data
Receive Data
Request to Send
Clear to Send
Data Mode
Signal Ground
Receiver Ready
Reserved
Reserved
Reserved
Send Timing
Reserved
Receive Timing
Reserved
Terminal Ready
Reserved
Reserved
Reserved
Terminal Timing