Power Supply Capacity; Supply Power Available For Terminals - Mitel Aastra 470 System Manual

3. 4. 5

Power supply capacity

The maximum number of terminals connected to the system can be limited by the
supply power available for terminals. It is also important to take note of the maxi-
mum load per terminal interface.
3. 4. 5. 1

Supply power available for terminals

The internal power supply unit (PSU2U) is rated for the power requirements of a
typical system expansion. An external auxiliary power supply unit (APS2) is used for
purposes of redundancy or if a large number of terminals are operated without
their own power supply. It can either handle the power supply on its own or be
used in combination with the internal power supply unit (see also the overview
"Powering the communication server", page
Tab. 35 Available power output for various types of power supply
Available power output
(P )
total
To calculate the power output available for the connected terminals (P
you need to deduct from the power specifications in
sumption of the basic system, the interface cards, the DSP modules, the IP media
modules, the CPU2 applications card and the redundant fan unit (P
Tab. 36 Power requirements of Aastra 470 hardware components
Designation
Basic system with CPU1 call manager card
Interface card 1PRI
Interface card 2PRI
Interface card 4BRI
Interface card 8BRI
Interface card 4FXO
Interface card 8FXO
Interface card 16FXO
Interface card 4FXS
Interface card 8FXS
Interface card 16FXS
Interface card 32FXS
Interface card 8DSI
Interface card 16DSI
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
Expansion Stages and System Capacity
Internal power supply
unit only
120 Watt
100).
External auxiliary power
supply unit only
240 Watt
Tab. 35
Output P [W]
10
1.5
2
1
1
1
1.5
2.5
1.5
2
3
4.5
2
3
Internal power supply unit
+ external auxiliary power
supply unit
360 Watt
)
terminals
(P ) the power con-
total
).
hw
85