Aastra 470 System Manual

Expansion Stages and System Capacity
88
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
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 103).
Tab. 33 Available power output for various types of power supply
To calculate the power output available for the connected terminals (Pterminals) 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 re-
dundant fan unit (Phw) from the power specifications in Tab. 33 (Ptotal) .
Tab. 34 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 16FXO 2.5
Interface card 4FXS 1.5
Interface card 8FXS 2
Interface card 16FXS 3
Interface card 32FXS 4.5
Interface card 8DSI 2
Interface card 16DSI 3

Aastra 470 Specifications

General

Brand	Aastra
Model	470
Category	Telephone
Language	English