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Chapter 1: Overview
Twisted Pair Ports
22
The AT-GS950/10PS, AT-GS950/16PS, AT-GS950/28PS, and
AT-GS950/48PS Layer 2 Gigabit Ethernet Switches feature 10, 16, 24,
and 48 twisted pair ports, respectively. All ports are 10Base-T, 100Base-
TX, and 1000Base-TX compliant. You can set the port speeds and duplex
modes either automatically with IEEE 802.3u Auto-Negotiation or
manually with the management software.
The twisted pair ports feature 8-pin RJ-45 connectors. For the port
pinouts, see "Connectors and Port Pinouts" on page 71.
The ports have a maximum operating distance of 100 meters (328 feet).
For 10 Mbps operation, the ports require Category 3 or better 100 ohm
shielded or unshielded twisted pair cabling. For 100 or 1000 Mbps
operation, the ports require Category 5 or Enhanced Category 5 (5E) 100
ohm shielded or unshielded twisted pair cabling.
The ports feature Auto-MDI, which automatically configures the ports as
MDI or MDI-X. This feature allows you to use straight-through twisted pair
cables regardless of the wiring configurations of the ports on the end
nodes.
Note
A switch port connected to an end node that is not using Auto-
Negotiation should not use Auto-Negotiation to set the speed and
duplex mode, because a duplex mode mismatch may occur. In this
case, disable Auto-Negotiation and set the port's speed and duplex
mode manually.
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