Aastra 470 System Manual

Expansion Stages and System Capacity
92
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
3. 4. 5. 2 Power supply per interface
DSI interface card
The maximal available power supply on the DSI ports per interface is limited. In cer-
tain cases (e.g. 32 connected SB-4+ radio units with HW version " - 2" at a 32DSI in-
terface during simultaneously high traffic load) this value can be exceeded and the
the overload shutdown is triggered. To provide remedy individual terminals must
either be powered locally or spread out on several DSI interface cards.
Tab. 36 Maximal power supply per interface card
3. 4. 5. 3 Power supply per terminal interface
The power supply per terminal interface is determined by the interface type. The
interface load depends on the following variables:
• Terminals used incl. auxiliary devices
• Bus configuration
• Line length and conductor cross-section
For information on the calculations refer to "Terminal interfaces", page 132.
Maximal power supply per interface card Output P [W]
DSI interface card 41.5

Aastra 470 Specifications

General

Brand	Aastra
Model	470
Category	Telephone
Language	English