Power Supply - Mitel Aastra 470 System Manual

Expansion Stages and System Capacity
Tab. 15 Interfaces, display and control elements of the call manager card CPU1
Interfaces, display and control elements
On/Off button with integrated status LED
Colour display
Navigation keys
Ethernet interfaces 1Gbit/s (LAN)
1)
FXS terminal interfaces
Slot for Flash card
Slot for DSP modules
Slot for IP Media module
Slot for RAM module
Slot for EIM card
1)
Multifunctional analogue interfaces
3. 2. 2

Power supply

Internal power supply unit PSU2U
The Aastra 470 communication server is powered as standard directly with a mains
cable. The voltage converter needs to be set to the correct position to match the
mains power (230 VAC or 115VAC) (see also
page 100). The internal power supply unit PSU2U powers all the system compo-
nents and a limited number of connected terminals.
External auxiliary power supply APS2
The external auxiliary power supply APS2 is used for the following purposes:
• Increasing the supply power available. This is required only for systems which
are to operate a large number of terminals without their own power supply.
• As a redundancy for the internal power supply unit PSU2U. If either the internal
or the external power supply unit fails, the system switches over to the intact
power supply, without interruption.
The external auxiliary power supply APS2 is also powered by the 115/230 V mains.
42
Num-
ber of Position Remarks
entries
1 [1]
1 [2]
4 [3]
3 [4] RJ45 sockets
4 [5] RJ45 sockets
1 [6] Device ships already equipped
2 [7] Can be fitted as an option, stackable
1 [8] Can be fitted as an option
1 [9] Device ships already equipped
1 [10] Device ships already equipped
"Powering the communication server",
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014