PortServer Terminal Server Page 107
4 Pin RJ 11 Plugs
The 4-pin RJ-11 plug can be used in situations requiring no handshaking, or software
handshaking (XON/XOFF). No hardware handshake lines are available with this configuration.
This is useful for the popular three-wire connection (TxD, RxD and Signal Ground) used for
terminals and printers that support XON/XOFF handshaking.
RJ-11 WIRING: 4 PIN PLUG TO 10 PIN JACK
RJ-11 - 4 Pin Plug RJ-45 - 10 Pin Jack
RI
DSR
RTS
GND
TxD
RxD
SG
CTS
DTR
DCD
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
GND
TxD
RxD
SG
1.
2.
3.
4.
Pin 1
Pin 4
Pin 1
Pin 10
N/C
N/C
N/C
N/C
N/C
N/C
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