HP R-2A, R-2 MD01, R-3A, R-2 RDR manual RPC RJ-45 control port uses the following signals

RPC SERIES OWNER’S MANUAL CABLING

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The RPC RJ-45 control port uses the following signals:

			EIA-232 RJ-45 PIN/SIGNAL DEFINITION
Pin	EIA-232	Direction		Description
	Signal
1	DTR	Output		+10V when activated by DCD. Toggles on logout for modem disconnect.
2	GND	----		Signal Ground
3	RTS	Output		+10V when powered is applied, not used as a handshake line
4	TX	Output		Transmit Data (data out)
5	RX	Input		Receive Data (data in)
6	N/C	N/C		No Connection
7	GND	-------		Signal Ground
8	DCD	Input		DCD into the RPC/Not used on RPC-2 MD01

To interface a computer or terminal to the RPC, refer to comment on Page 19. Refer to Figure 4, if the host computer or terminal has a DB-25 male connector. Refer to Figure 5, if the host computer has a DE-9 male connector.

1	BLUE
2	ORANGE

3	BLACK
4	RED
5	GREEN
RJ-45
6	YELLOW
7	BROWN
8	GRAY

2TX

3RX

4RTS

5 CTS

FEMALE DB-25

6DSR

7GND

8DCD

20 DTR

Figure 4: Computer/Terminal Adapter
BayTech Part No. 25FRJ45PC-1	Crossed RJ-45 cable is required

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