GE DS2020FECNRP025A Serial Link Controller

To connect two 10 Mbps or 100 Mbps network devices together that have dissimilar port wiring configurations, such as MDI to MDI-X, you use a straight-through cable. To connect two network devices that have an RJ-45 port with the same wiring configuration, such as MDI to MDI, you use a crossover cable. The RJ-45 port on the media converters features an MDI/MDI-X switch. You can use this switch to configure the twisted pair port on the media converter as either MDI or MDI-X. This feature allows you to use a straight-through cable regardless of the type of end-node connected to the port.

NML/LNK TST Switch 

The NML/LNK TST (Normal MissingLink/Link Test) button allows you to perform a link test on the ports on the media converter. This button also allows you to activate the MissingLink feature on the unit. The MissingLink and Link Test features are describe below. MissingLink. The MissingLink feature allows the ports on the media converter to pass the “Link” status of their connections to each other. When the media converter detects a problem with one of the ports, such as the loss of connection to a node, the media converter shuts down the connection to the other port, thus notifying the node that the connection has been lost.

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