Cable Pinouts - 3Com Router 3012 Installation Manual

V.24 EIA/TIA-232 DCE

Cable Pinouts

Figure 30 V.24 DTE Cable Assembly
DB50 Male
Enlarged A side
Table 31 describes V.24 (EIA/TIA-232) DTE cable pinouts.
Table 31 V.24 (EIA/TIA-232) DTE Cable Pinout
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 31 illustrates the V.24 DCE cable.
Figure 31 V.24 DCE Cable Assembly
DB50 Male
Enlarged A side
Table 32 describes V.24 (EIA/TIA-232) DCE cable pinouts.
Table 32 V.24 (EIA/TIA-232) DCE Cable Pinouts
DB-50 Signal
5 TxD/RxD
Label
Signal Direction DB-25
—> 2
<— 3
—> 4
<— 5
<— 6
<— 8
<— 15
<— 17
—> 18
—> 20
—> 24
- 1
- 7
Label
Signal Direction DB-25
—> 3
Serial Port Cable 55
DB25 Male
Enlarged B side
Signal
TxD
RxD
RTS
CTS
DSR
DCD
TxC
RxC
LTST
DTR
TxCE
Shield_GND
Circuit_GND
DB25 Female
Enlarged B side
Signal
RxD