Terminal/Printer Cables, RJ-11 6-pin to DB-25

The wiring diagram for an RJ-11 6-pin to DB-25 terminal/printer cable is shown in Table 1.

Table 1:  EIA-232 RJ-11 6-pin to DB-25 terminal/printer cable

From RJ-11	Signal	Direction	Signal	To DB-25
4	RxD		TxD	2
3	TxD		RxD	3
5	SG		SG	7
1	RTS		CTS	5
6	CTS		DTR	20
2	GND		GND	Shell

NOTES:

• This cable utilizes the DTR signal of the terminal/printer for hardware flow control (RTS/CTS).
• Okidata printers may use SSD (pin 11) instead of DTR (pin 20) on DB25 side in above diagram.  If this is the case, the printer should be set to SSD+.
• Some Unix operating systems require carrier to be present.  If this is the case, the forcedcd parameter will need to be turned on for this port at the host.
• EIA-232 cables cannot exceed 2500pF.  For information about calculating capacitance of your cable, click here.
• For information regarding the EIA-232/EIA-422/EIA485 specifications, click here.