Expansion Stages and System Capacity
45
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016
Fig. 9 Interfaces, display and control elements of the call manager card CPU1
Tab. 15 Interfaces, display and control elements of the call manager card CPU1
3. 2. 2 Power supply
Internal power supply unit PSU2U
The Mitel 470 communication server is powered as standard directly with a mains ca-
ble. The voltage converter needs to be set to the correct position to match the mains
power (230 VAC or 115VAC) (see also "Powering the communication server",
page 102). The internal power supply unit PSU2U powers all the system components
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.
Interfaces, display and control elements
Num-
ber of
entries
Position Remarks
On/Off button with integrated status LED 1 [1]
Colour display 1 [2]
Navigation keys 4 [3]
Ethernet interfaces 1Gbit/s (LAN) 3 [4] RJ45 sockets
FXS terminal interfaces
1)
1) Multifunctional analogue interfaces
4 [5] RJ45 sockets
Slot for Flash card 1 [6] Device ships already equipped
Slot for DSP modules 2 [7] Can be fitted as an option, stackable
Slot for IP Media module 1 [8] Can be fitted as an option
Slot for RAM module 1 [9] Device ships already equipped
Slot for EIM card 1 [10] Device ships already equipped
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