Product Description
26
10/100/1000
Mbps Twisted
Pair Ethernet
Port
Each of the AT-MMC6000 Series media converters have one twisted pair
Ethernet port. The twisted pair port features RJ45 connectors with a
maximum operating distance of 100 meters (328 feet). For the port pinout
details, refer to “RJ45 Connector and Port Pinouts” on page 53.
Type of Cabling
Table 4 contains the cable specifications for the twisted-pair port.
Auto MDI/MDI-X
An RJ45 twisted pair port on a 10/100/1000 Mbps Ethernet network device
can have one of two possible wiring configurations: MDI or MDI-X. The
RJ45 port on a PC, router, or bridge is typically wired as MDI, while the
twisted pair port on a switch or hub is usually MDI-X.
The AT-MMC6000 Series Media Converter feature automatic MDI/MDI-X.
The Ethernet port automatically determines the configuration of the port on
the device to which it is connected and then configures itself appropriately.
For example, if a port on a media converter is connected to a port on a
bridge, which is typically wired as MDI, the port on the media converter
automatically configures itself as MDI-X. This feature allows you to use
either a straight-through or crossover cable when connecting a device to
the media converter.
Auto-Negotiation
The media converter Auto-Negotiates the speed and duplex mode of the
Ethernet link, so that the link comes up in the highest performance
configuration supported by both ends.
Table 4. Twisted-Pair Port Cabling Specifications
Speed Type of Cable
10 Mbps Standard TIA/EIA 568-B-compliant Category 3 or better
shielded or unshielded cabling with 100 ohm impedance
and a frequency of 16 MHz.
100 Mbps Standard TIA/EIA 568-A-compliant Category 5 or TIA/EIA
568-B-compliant Enhanced Category 5 (Cat 5e) shielded
or unshielded cabling with 100 ohm impedance and a
frequency of 100 MHz.
1000 Mbps Standard TIA/EIA 568-A-compliant Category 5 or TIA/EIA
568-B-compliant Enhanced Category 5 (Cat 5e) shielded
or unshielded cabling with 100 ohm impedance and a
frequency of 100 MHz.
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