Mitel Aastra 470 System Manual page 43

Aastra 470 housing
CPU2
CPU1
Interface cards
Fig. 10 Overview of the Aastra 470 power supply concept
Notes
– It is also possible to operate the communication server with the exter-
nal 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
tion server", page
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
Expansion Stages and System Capacity
24 VDC
24 VDC
3.3 VDC
3.3 VDC
control
24 VDC
Power
control
section
24 VDC
100.
Standard fan
Redundant
fan unit
=
=
control
24 VDC
=
~
"Powering the communica-
24 VDC
Auxiliary
power
suply unit
=
~
Mains power
115/230 VAC
43