Installation144 Aastra 470 as of R1.2syd-0337/1.2 – R1.2 – 11.2011Ambient conditions• When installing: Ensure convection (space for ventilation).• Avoid excessive dust.• Avoid exposure to chemicals.• Avoid direct sunlight.• See also technical data in Tab. 129, page 236.Note:If these requirements cannot be met (e.g. outdoor installation), use theappropriate protective housing.4. 8. 2. 1 Installing the radio unitsDo not remove the cover of the radio unit. (Warranty protection will lapse if thecover is removed)Fit the mounting bracket (see Fig. 71, page 144 dimensional drawing for wallmounting). Observe the minimum distances (see Fig. 72, page 145).Position the DSI socket(s) near the radio unit.Each radio unit requires one DSI bus (two optional on the SB-8): Do not connectany other terminals.The radio units can be powered from the communication server up to the maxi-mum line length of 1200 m specified for operation (wire diameter 0.5 mm). Theplug-in power supply unit for is the same as the one for the Office 135 chargingbay.Fig. 71 Dimensional drawing for wall-mounting the mounting bracket1601003784168Mounting bracketø screw : 4 mmAll dimensions in mm