Specifications

Table Of Contents
102 Chapter 9 Pinout reference
DB-25F to DB-9M modem cable
From
DB-
25
Signal Direction Signal To DB-9
8 DCD DCD 1
3 RxD
RxD 2
2 TxD
TxD 3
20 DTR
DTR 4
7SG
SG 5
6 DSR
DSR 6
4 RTS
RTS 7
5 CTS
CTS 8
22 RI
RI 9
Shell GND
GND Shell
* Arrows indicate which direction the signal is flowing
NOTES:
Altpin should be turned off when using this cable.
This cable utilizes the CTS signal of the modem for hardware flow control (RTS/CTS).