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AT-FS232 and AT-FS232/x Series Installation Guide

When setting the DIP switches, consider the following:

❑ Setting the Auto Neg DIP switch for the twisted pair port to ON or

OFF enables or disables Auto-Negotiation for the port. If you disable

Auto-Negotiation, be sure to set the DIP switches for the port’s speed

and duplex mode to match the speed and duplex mode of the end-node.

❑ Disabling Auto-Negotiation on the twisted pair port also disables Auto

MDI/MDI-X and configures the port as MDI-X.

❑ For the fiber optic port, set the port’s duplex mode using the

appropriate Duplex Mode DIP switch. This setting must match the

duplex mode capability of the end-node to be connected to the port.

Table 6 DIP Switch Settings

DIP

Switch

Number

Port Setting Position Description

1 2 Speed (Mbps) Up

Down

The twisted pair port operates at 10 Mbps.

The twisted pair port operates at 100 Mbps.

2 1 Duplex Mode Up

Down

The fiber optic port operates in half-duplex

mode.

The fiber optic port operates in full-duplex

mode.

3 2 Duplex Mode Up

Down

The twisted pair port operates in half-duplex

mode.

The twisted pair port operates in full-duplex

mode.

42Auto NegUp

Down

Auto-Negotiation on the twisted pair port is

OFF.

Auto-Negotiation on the twisted pair port is

ON.

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Allied Telesis AT-FS232 Guida di Installazione Pagina 31