Installation
101
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
4. 3. 1 Connecting the earthing wire
The communication server’s earthing connection is located on the rear panel of the
communications server next to the mains power socket. The earthing wire is se-
cured using a screw and a spring washer.
Fig. 20 Earthing connection
Fig. 21 Earthing of the communication server in the case of an direct cabling and indirect cabling
Aastra 470
Aastra 470
Indirect connection
Direct connection
Copper wire yellow/
green 2,5 mm
2
protected 4,0 mm
2
unprotected
Copper wire yellow/ green
2,5 mm
2
protected 4,0 mm
2
unprotected
(Main) distribu-
tion board
Building earth
Building earth
Protective wire
Protective wire
Socket-outlet
Socket-outlet
Mains power
Mains power
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