Figure E-2. Standard Eia-232-D Crossover Cable - ADTRAN DSU IV ESP User Manual

An EIA-232 DB-25 DSU tail circuit cable diagram for a DSU tail
circuit application is shown in Figure E-2.
P1
Chassis Ground
TXD
RXD
RTS
CTS
DSR
Signal Ground
CD (RLSD)
RC (SCR)
DTR
ETC (SCR)
61204011L1-1
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

Figure E-2. Standard EIA-232-D Crossover Cable

DSU IV ESP User Manual
Appendix E. DSU to DSU Tail Circuit
Pin P2
1 Chassis Ground
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 Signal Ground
8 CD (RLSD)
9
10
11
12
13
14
15
16
17 RC (SCR)
18
19
20 DTR
21
22
23
24 ETC (SCR)
25
E-3