Aastra 470, Системное руководство, Страница: 71 / 250

Expansion Stages and System Capacity
71
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
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 84 ).
Tab. 32 Available power output for various types of power supply
To calculate the power output available for the connected terminals (P
terminals
)
you need to deduct the power consumption of the basic system, the interface
cards, the DSP modules, the IP media modules, the CPU2 applications card and the
redundant fan unit (P
hw
) from the power specifications in Tab. 32, page 71 (P
total
) .
Tab. 33 Power requirements of hardware components Aastra 470
Internal power supply
unit only External auxiliary power
supply unit only
Internal power supply unit
+ external auxiliary power
supply unit
Available power output
(P
total
)
120 Watt 240 Watt 360 Watt
Designation Output P [W]
Basic system with CPU1 call manager card 10
Interface card 1PRI 1.5
Interface card 2PRI 2
Interface card 4BRI 1
Interface card 8BRI 1
Interface card 4FXO 1
Interface card 8FXO 1.5
Interface card 4FXS 1.5
Interface card 8FXS 2
Interface card 16FXS 3
Interface card 8DSI 2
Interface card 16DSI 3
Interface card 32DSI 4
DSP module SM-DSPX1, SM-DSP1 0.75
DSP module SM-DSPX2, SM-DSP2 1.5
IP Media module EIP1-8 2
IP Media module EIP1-32 2.5
4TAX, 8TAX call charge module 0.1
Application card CPU2 21
1)
1)
Up to 9 W more if the front-side USB interfaces are connected.
Redundant fan unit RFU 3.5