Allied Telesis AT-GS950/48 - Manual (Page 18)

Chapter 1: Overview
18
The ports have a maximum operating distance of 100 m (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 might occur. You
should disable Auto-Negotiation and set the port’s speed and duplex
mode manually.
Combo Ports
The AT-GS950/8 and AT-GS950/16 Switches have two combo ports. The
AT-GS950/24 and AT-GS950/48 Switches has four combo ports. Each
combo port consists of one 10/100/1000Base-T twisted pair port and one
slot for an optional 100Base-FX or 1000Base-SX/LX SFP transceiver. The
twisted pair ports are identified with the letter “R” for “Redundant” on the
front face plates of the units. The combo ports and slots are listed in
Table 1.
Table 1. Combo Ports
Switch Twisted Pair Port SFP Slot
AT-GS950/8 7R 7
8R 8
AT-GS950/16 15R 15
16R 16
AT-GS950/24
21R 21
22R 22
23R 23
24R 24