Mitel 470 - Page 46

Expansion Stages and System Capacity
46
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016
Fig. 10 Overview of the Mitel 470 power supply concept
Notes
– It is also possible to operate the communication server with the external power supply unit
APS2 only In this case redundancy operation is of course no longer possible.
– To ensure that its operation is maintained even in the event of a mains outage, an external
uninterruptible power supply (UPS) must be used.
See also:
For the available power outputs using the various types of power supply and for connecting the
power supplies, see "Powering the communication server", page 102
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24 VDC
control
24 VDC
3.3 VDC
control
3.3 VDC
CPU1
CPU2
24 VDC
24 VDC
24 VDC
24 VDC
Mains power
115/230 VAC
Power
control
section
Mitel 470 housing
Redundant
fan unit
Standard fan
Interface cards
Backplane
Internal power supply unit
Auxiliary
power
supply unit