Allied Telesis AT-8550SP - Manual (Page 19)

AT-8500 Series Fast Ethernet Switch Installation Guide
19
Maximum
Distance
Each twisted pair port has a maximum operating distance of 100 meters
(328 feet).
Type of Cabling For 10 Mbps operation, Category 3 or better 100 ohm shielded or
unshielded twisted pair cabling is required. For 100 Mbps operation,
Category 5 or Enhanced Category 5 (5E) 100 ohm shielded or unshielded
twisted pair cabling is required.
Auto-MDI/
MDI-X
The twisted pair ports are auto-MDI/MDI-X. They automatically
configure themselves as either MDI or MDI-X, depending on the
configuration of the port on the end node. This feature allows you to use
either straight-through or crossover twisted pair cables to connect
devices to the ports.
Note
The auto-MDI/MDI-X feature on a port is available only when the
port is set to Auto-Negotiation. If you disable Auto-Negotiation and
set a port’s speed and duplex mode manually, the port defaults to
MDI-X. For instructions on configuring a port, refer to the AT-S62
Management Software User’s Guide.
Port Pinouts For the port pinouts for the AT-8524M, AT-8550GB, and AT-8550SP
switches, refer to Table 10 on page 83. For the port pinouts for the
AT-8524POE switch, refer to Table 11 on page 84.