10/100Base-TX Twisted Pair Port

Allied Telesis AT-PC232/POE manual 10/100Base-TX Twisted Pair Port, Maximum Distance

Chapter 1: Overview

Type of Connector

Port Speed

Duplex Mode

Maximum Distance

The 10/100Base-TX twisted pair port is described below:

The 10/100Base-TX twisted pair port on AT-PC232/POE Media Converter features an 8-pin RJ-45 connector. The port uses four pins when operating at 10 or 100 Mbps. For the port pinout details, refer to Figure 17 , “RJ-45 Connector and Port Pin Layout” on page 54.

The 10/100Base-TX twisted pair port can operate at 10 or 100 Mbps. The speed is set automatically through Auto-Negotiation or you can set the speed manually via the DIP switches located on the back of the unit. With Auto-Negotiation, the speed of the port is set automatically by the converter after it determines the speed of the end-node connected to the port. Auto-Negotiation is designed to ensure that the port on the converter and the end-node are operating at the same speed and that they are communicating at the highest possible common speed of the devices.

Duplex mode refers to how an end-node receives and transmits data. If an end-node can receive or transmit data, but not both simultaneously, the end-node is operating in what is referred to as half-duplex mode. If an end-node can both receive and transmit data simultaneously, the end- node is said to be operating in full-duplex mode. Naturally, an end-node capable of operating in full-duplex can handle data much faster than an end-node that can only operate in half-duplex mode.

The twisted pair port is IEEE 802.3u-compliant and will Auto-Negotiate the duplex mode setting. It can be manually reconfigured to either full or half- duplex mode via the DIP switches located on the back of the unit when the Auto-Negotiate switch is in the OFF position.

Note

In order for a converter port to successfully Auto-Negotiate its duplex mode with an end-node, the link partner should also be using Auto-Negotiation. Otherwise, a duplex mode mismatch can occur. While configured for Auto-Negotiation, a converter port will default to half-duplex if it detects that its link partner is not using Auto- Negotiation. This will result in a mismatch if the end-node is operating at a fixed duplex mode of full-duplex.

The 10/100Base-TX twisted pair port has a maximum operating distance of 100 meters (328 feet).

AT-PC232/POE specifications

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