Internal Description - Aastra AXD Installation And Maintenance Manual

3.1.6.2

Internal description

The main cabinet and expansion cabinet include, in addition to the slots for the CPU cards
and removable subassemblies:
• A backplane (UCV-S for a main cabinet or RUCV-S for an expansion cabinet) meant to
host expansion cards
• The expansion cards can be plugged in along the guides located on the sides of the
cabinets.
• A power unit connected to the backplane (UCV-S or RUCV-S)
• A fan.
AMT/PTD/PBX/0058/4/6/EN
Page 70 01/2011 Description et caractéristiques d'un PBX
Installation and Maintenance Manual - Aastra 5000