Allied Telesis AT-9424T/POE manual Twisted Pair and Fiber Optic Cable Specifications, Maximum

Chapter 2: Installing the Switch

Twisted Pair and Fiber Optic Cable Specifications

Twisted Pair

Cable

Specifications

Table 9 lists the cabling specifications for the 10/100/1000Base-T twisted pair ports.

Table 9. Twisted Pair Cabling and Distances

		Maximum
Speed	Cable Type	Operating
		Distance
10 Mbps	Standard TIA/EIA 568-B-compliant	100 m (328 ft)
	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	100 m (328 ft)
	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	100 m (328 ft)
	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.

Note

The auto-MDI/MDI-X feature on the twisted pair ports automatically configures the MDI/MDI-X setting when a link is established with an end node. Available when a port is at the default setting of Auto- Negotiation, this feature allows you to use a straight-through twisted pair cable when connecting any type of network device to a port.

Disabling Auto-Negotiation on a port and setting the speed and duplex mode manually also disables the auto-MDI/MDI-X feature. A port where Auto-Negotiation has been disabled defaults to MDI-X. Disabling Auto-Negotiation may require manually configuring a port’s MDI/MDI-X setting or using a crossover cable.

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