Cabletron Systems MRXI-22 User Manual - 5.1.2

LOCAL MANAGEMENT

5-5

5.1.2

Modem Cable Configuration

To access Local Management with a modem use an RS-232 cable 

available from Cabletron Systems. This cable connects the modem to the 

MRXI Modem port. Figure 5-3 shows the pin-out for a cable and a RJ-45 

connector at the MRXI end of the cable.

Figure 5-3

Modem Cable Pin-outs

5.1.3

Cable Configuration for UPS

To configure the cable connections for the Uninterruptible Power Supply 

(UPS):

1. Plug a straight-through twisted pair, RS232, cable into the MRXI’s 

RJ-45 Modem Port.

2. Plug the other end of the RS232 cable into the adapter (Part #9372066) 

and connect the adapter to the UPS.

You can now use the UPS option in the Local Management.

RJ-45 

Female

Pin 1

RJ-45 MODEM PORT

1

4

5

2

3

7

TRANSMIT

RECEIVE

RECEIVE

TRANSMIT

SIGNAL GROUND

SIGNAL GROUND

RJ-45 TO 25 PIN

CABLE

FEMALE - 25 Pin

 "D" Shell Connector

RING

6

8

22

RING

20

DATA TERMINAL READY

DATA CARRIER DETECT

DATA CARRIER DETECT

2

8

DATA TERMINAL READY