Installation
118
Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014
Power available B:
Applies to the SB-4+/SB-8 DECT radio units with hardware version "-2" if they are
connected to a basic system with hardware version "-2" or to an EADP4 interface
card with hardware version "-3".
Fig. 44
Power available B on the DSI-AD2 bus
Notes
– If another system phone is operated on the DSI-AD2 bus in addition to
an Aastra 5361, Aastra 5370 or Aastra 5380, at least one phone must be
powered by a local power supply unit.
– An Aastra 5370 or Aastra 5380 with an Aastra M535 expansion key
module always requires a power supply unit.
– An Aastra 5380 with 3 Aastra M530 expansion key modules always
requires a power supply unit. With 2 expansion key modules the use of
power supply unit depends on the line length and the line cross-sec-
tion.
d = 0.6 mm
d = 0.5 mm
d = 0.4 mm
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d=0.6mm
d=0.5mm
d=0.4mm
Pmax [mW]
R [Ohm]
d=0.4mm
d=0.5mm
d=0.6mm
Power available B on the DSI-AD2 bus Pmax [mW]
Loop resistance R [Ohm]
Line length L [m]
d: Wire diameter
