Installation
103
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016
Tab. 40 Power supply types for the communication server
4. 4. 1 Internal power supply unit
The communication server is powered via the supplied mains power cord.
The following points are to be observed:
• The mains connector acts as a disconnecting device and must be positioned so that
it is easily accessible.
• The voltage selector must be set to the voltage of the connected mains power (see
Fig. 24).
Warning
PCBs may be damaged or become defective if the communication server is operated on
230 V mains power and the voltage selector is set to 115 V or if the communication server is
operated on 115 V mains power and the voltage selector is set to 230 V.
4. 4. 2 External auxiliary power supply unit
The use of the external auxiliary power supply unit APS2 is necessary to increase the
operating reliability (redundancy operation) or if the internal power supply unit is no
longer sufficient based on the power requirement calculations or any event messages
generated (power supply overload). It is also connected directly to the 230 VAC or 115
VAC mains. However, unlike the internal power supply unit it does not have a voltage
converter. The voltage automatically adapts to the mains voltage.
Power supply type
Available power
output
Redundancy
operation pos-
sible
Remarks
Internal power supply unit
only
120 Watt No Suitable for a typical system configuration
Internal power supply unit +
external auxiliary power sup-
ply unit
120 Watt yes Suitable for a typical system configuration
with power supply redundancy
External auxiliary power sup-
ply unit only
240 Watt No Minor heat generation inside the Mitel 470
housing
Internal power supply unit +
external auxiliary power sup-
ply unit
360 Watt No Suitable for maximum power requirements
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