Paradyne 3160 Operator's Manual page 210

Pin Assignments
Serial Crossover Cable
D-14
Use a serial crossover cable like the one shown in Figure D-10 (with an adapter
like that shown in Figure D-10) to connect an external modem to the DSU/CSU's
COM port.
Pin 14
P1
Plug
Pin 1
Pin 13
Pin 25
P1 Pin
Chassis Ground 1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
Signal Ground 7
CD (RLSD) 8
9
10
11
12
13
14
15
16
17
18
19
DTR 20
21
22
23
24
25
Figure D-10. Serial Crossover Cable
March 1999
Pin 1
P2
Plug
Pin 14
Pin 25
Pin 13
Pin P2
1 Chassis Ground
2 TXD
RXD
3
4 RTS
5 CTS
6 DSR
7 Signal Ground
CD (RLSD)
8
9
10
11
12
13
14
15
16
17
18
19
20 DTR
21
22
23
24
25
497-15180a
3160-A2-GB21-80