Aastra 470, Системное руководство, Страница: 73 / 250

Expansion Stages and System Capacity
73
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
Tip
With the planning application Aastra Plan the power supply available for
terminals is checked automatically.
Overload shutdown
If 80% of the available power output is exceeded, the event message Terminal
power supply overload is generated.
If 100% of the available power output is exceeded, the event message Terminal
power supply shutdown is generated. The power supply is then shut down step by
step, starting with the expansion slots with the highest numbers and, within the
cards, with the ports with the highest numbers. The terminal ports FXS and BRI-S
are shut down individually; the DSI ports, in groups of 8 ports. The exchange ports
BRI-T and PRI are never shut down.
Once the power required drops below 100% as a result of the shutdowns, the dis-
connected ports are reconnected after approx. 10 seconds. If the limit of 100% is
again exceeded, the overload shutdown is triggered once again.
The overload shutdown works in principle for all three types of power supply (see
Tab. 32, page 71 ). However it triggers particularly in cases where only the internal
Office 10
1)
DSI-AD2 interface 340
Office 25
1)
DSI-AD2 interface 380
Office 35
1)
DSI-AD2 interface 280
5)
Office 45/45pro
1)
DSI-AD2 interface 660
5)
Office 45pro with power supply unit
1)
DSI-AD2 interface < 10
Expansion key module (EKP)
1)
Office 35, Office 45 80
Alphanumerical keyboard (AKB)
1)
Office 35, Office 45 20
ISDN terminal BRI-S interface approx. 500
6)
Analogue terminals FXS interface approx. 500
1)
Although no longer available, the phone is still supported.
2)
An Aastra M535 always requires a power supply unit
3)
The value applies to radio units with hardware version "-2". The value for hardware version "-1" is 300 mW
lower.
4)
The value applies to each interface and to radio units with hardware version "-2". The value per interface for
radio units with hardware version "-1" is 150 mW lower.
5)
The value applies to phones with hardware version "-2". The value for phones with hardware version "-1" is
60 mW lower.
6)
The value depends greatly on the terminal type.
Terminals Connection Output P [mW]