3Com 3C13755-US - Router 5642 Installation Manual page 95

V.24 DTE Cable Assembly
and Pinouts
V.24 DCE Cable
Assembly and Pinouts
V.35 DTE cable — 34-pin (male) adapter
V.35 DCE cable — 34-pin (female) adapter
Figure 84 illustrates the V.24 DTE cable assembly.
DTE Cable Assembly
Figure 84 V.24
DB50 Male
Enlarged A side
describes V.24 DTE cable pinouts.
Table 60 V.24 DTE Cable Pinouts
DB-50 Signal
5 TxD/RxD
27 RxD/TxD
2 RTS/CTS
31 CTS/RTS
6 DSR/DTR
30 DCD/LL
3 TxC/NIL
28 RxC/TxCE
1 LL/DCD
26 DTR/DSR
4 TxCE/TxC
50 GND
7 GND
Figure 85 illustrates the V.24 DCE cable assembly.
Figure 85 V.24 DCE Cable Assembly
DB50 Male
Enlarged A side
Serial Interface Cable
Label
Signal Direction DB-25
—> 2
<— 3
—> 4
<— 5
<— 6
<— 8
<— 15
<— 17
—> 18
—> 20
—> 24
- 1
- 7
Label
93
DB25 Male
Enlarged B side
Signal
TxD
RxD
RTS
CTS
DSR
DCD
TxC
RxC
LTST
DTR
TxCE
Shield_GND
Circuit_GND
DB25 Male
Enlarged B side