Allied Telesis AT-MCF2000, Installation Manual

Page: 35 / 190

AT-MCF2000 Media Converter Series Installation Guide
Section I: Features 35
Twisted Pair Ports
Table 5 lists the cable specifications for the twisted pair ports.
The twisted pair ports feature standard RJ-45 8-pin connectors. For the
port pinouts, refer to “Twisted Pair Port Pinouts” on page 174.
The ports are IEEE 802.3u. compliant and use Auto-Negotiation to
automatically set their speeds and duplex modes. To adjust the ports
manually, you have to use the optional management module.
The twisted pair ports also have auto-MDI/MDI-X, which enables them to
automatically adjust their wiring configuration to MDI or MDI-X, depending
on the wiring configuration of the end nodes. This allows you to use a
straight-through twisted pair cable regardless of the wiring configuration of
the ports on the network devices.
The auto-MDI/MDI-X feature is only available when the twisted pair ports
are using Auto-Negotiation, the default setting. If you disable Auto-
Negotiation on a port and set the speed and duplex mode manually, this
feature is also disabled and the port defaults to the MDI-X setting.
Table 5. Twisted Pair Cabling and Distances
Speed Cable Type
Maximum
Operating
Distance
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 m (328 ft)
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. 100 m (328 ft)
1000 Mbps
(AT-MCF2032SP
only) 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. 100 m (328 ft)