Rs-232-C Modem Cable - HP J2415A Installation And Reference Manual

Cables and Connectors

RS-232-C Modem Cable

A-8
Modem end Hub end
25-pin male 9-pin male
2 3
3 2
4 7
5 8
6 6
7 5
8 1
20 4
22 9
23
Signal
Tx
Rx
RTS
CTS
DSR
GND
CD OR DCD
DTR
RI
DRS – typically on V.24 (European) modems
(not connec ted)