
RJ-45 (Altpin On) to DB-25M Modem Cable
Modem Cables
EIA-232 Modem Cables, Altpin RJ-45 8-pin to DB-25
The wiring diagram for a Altpin RJ-45 8-pin to DB-25 modem cable is shown in Table 1.
Table 1: EIA-232 Altpin RJ-45 8-pin to DB-25 modem cable
From
RJ-45
Signal Direction Signal To DB-25
1 DCD DCD 8
5 RxD
RxD 3
4 TxD
TxD 2
8 DTR
DTR 20
6SG
SG 7
2 RTS
RTS 4
7 CTS
CTS 5
3 GND
GND Shell
* Arrows indicate which direction the signal is flowing
NOTES:
●
Altpin should be turned on when using this cable.
●
This cable utilizes the CTS signal of the modem for hardware flow control (RTS/CTS).
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