Aastra 470 - Page 42

Expansion Stages and System Capacity
42
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
Fig. 7 Aastra 470 basic system fitted with a redundant fan unit
Plug-in connections
for the interface
cards
Backplane (BP2U)
Internal power supply
unit (PSU2U)
Call Manager card
(CPU1)
Standard fan (tted)
Redundant fan
unit as an option
(RFU)