Allied Telesis IE340 Series, Installation Manual, Page: 25 / 136

Chapter 1: Overview
25
SFP Slots
The number of SFP slots and types of supported transceivers are given
here:

Four SFP slots on the IE340-12GP, IE340-12GT and IE340-20GP
switches

Two SFP slots on the IE340L-18GP switch

100Base-FX transceivers (All models except the IE340L-18GP
switch.)

1000Base-SX/LX transceivers

Single-port Bi-directional (BiDi) 1000Base-LX transceivers

1000Base-ZX transceivers

1000Base-T twisted pair transceivers
Note
SFP transceivers are purchased separately.
Protection
Circuits
The switches have optimized protection circuits to guard against the
following abnormal conditions:

Reverse input voltage polarity

Over- and under-voltage

Over-current

Peak-current and short-circuit

Over-temperature
Alarm
Monitoring
The alarm facility lets you monitor the switch’s environment and respond to
problems as they occur. Example of alarm events include:

Main power supply failure

Over-temperature

Port link down

Power requirements of all powered devices exceeding available
power budget

Powered devices exceeding individual port budgets

External Alarm contact input
Alarm
Connectors
The switches have two alarm connectors:

Alarm In connector for an external sensor, such as a motion
detector or door relay, to monitor the wiring closet or cabinet.

Alarm Out connector for an external alert device, such as a buzzer
or LED, to indicate switch alarms.