Paradyne 3150 Operator's Manual page 110

ACCULINK 315x CSU
Serial Crossover Cable
Use a serial crossover cable like the one shown in
Figure D-7 (with an adapter like that shown in
Figure D-6) to connect an external modem to the CSU's
COM port.
Pin 14
Pin 1
Pin 13
Pin 25
Chassis Ground
Signal Ground
CD (RLSD)
D-8
P1
Plug
Pin
P1
1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
7
8
9
10
11
12
13
14
15
16
17
18
19
DTR 20
21
22
23
24
25
Figure D-7. Serial Crossover Cable
February 1998
Pin 1
P2
Plug
Pin 14
Pin 25
Pin 13
Pin P2
Chassis Ground
1
2 TXD
3 RXD
4 RTS
5 CTS
DSR
6
Signal Ground
7
CD (RLSD)
8
9
10
11
12
13
14
15
16
17
18
19
20 DTR
21
22
23
24
25
497-15180a
3150-A2-GB21-80