3Com Router 3012 - Page 55

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