AT-MC601 and AT-MC602 Installation and User’s Guide
Auto-Negotiation.The network extenders Auto-Negotiate the speed and duplex mode of the Ethernet link, so that the link comes up in the highest performance configuration supported by both ends.
Half- and Full-duplex Mode.Duplex mode refers to the way an end-node sends and receives data on the network. An end-node can operate in either half- or full-duplex mode, depending on its capabilities. An end-node that is operating in half-duplex mode can either send data or receive data, but it cannot do both at the same time. An end-node that is operating in full-duplex mode can send and receive data simultaneously. The best network performance is achieved when an end-node can operate at full-duplex, since the end-node is able to send and receive data simultaneously.
The AT-MC601 and AT-MC602 network extenders can operate in either half- or full-duplex mode. The network extender can operate with end- nodes capable of either half-duplex, full-duplex, or that can Auto- Negotiate the duplex mode. However, it is important to remember that the two end-nodes connected to the ports on the network extenders must be able to operate in the same duplex mode.
RJ-45 Port Pinouts.Figure 4 illustrates the pin assignments of an RJ-45 connector and port.
Figure 4 RJ-45 Connector and Port Pin Assignments
Table 3 lists the RJ-45 10Base-T/100Base-TX connector pins and their signals when the port is operating in either MDI or MDI-X configuration.
Table 3 RJ-45 Port Pinouts
Pin | MDI Signal | MDI-X Signal |
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1 | TX+ | RX+ |
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2 | TX- | RX- |
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3 | RX+ | TX+ |
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6 | RX- | TX- |
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