AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 108 01/2011 Description et caractéristiques d’un PBX
3.8.6.2 Aastra XS/XL
The internal power supplies are distributed by a converter supplied with alternating
voltage: 115/230 V - 50/60 Hz.
This power supply module provides the direct low voltage power supplies for:
• The various cards in the iPBXs, voltages supplied via the back plane (for AXL iPBX)
and via a specific connector (for AXS, AXS12 and AXS6 iPBXs):
- power supplies required by their internal circuits
- ringing current (for certain equipment cards)
- set line current (-48 V)
Each back plane connector of the AXL iPBXs hosting an expansion card has
advanced contacts for earthing and +5 V for hot plugging, during cabinet operation,
of the CLX cards and new generation equipment cards (Lx16-X).
• To the fan(s) of the power supply module
• To be delivered over an ISDN connection: 40V voltage (only for ADS300X power
supply on XL).
An optional, 48 V backup battery, connected to the power supply module, can be installed
to provide direct power supply to the converter in case of mains failure (see Specifications
in Section 3.8.7.1).
The mains is distributed to the power supply module's rectifier through:
• A mains switch used to power the supply module on or off
• Two fuses.
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