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
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.
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