Installation and Commissioning
Preparation
Removing the Cover Panel
Removing the Cover Panel
Warning: Touching voltage-carrying conductors or telephone connections
may cause a life-threatening electric shock.
• Remove the power supply units – if connected – for both the PBX and all
• If necessary, also disconnect the devices from auxiliary power sources
Warning: Power surges, which can occur during electrical storms, can
cause life-threatening electric shocks.
• Do not open an already connected PBX during an electrical storm.
1. Grasp the cover panel from below (under the rim) to the left and right with the fingers
of both hands. Place the thumbs in the middle section next to the LED display.
2. Pull the cover panel away from the chassis slightly on both sides to unlatch the
locking.
The figure below shows the position of the hands on the cover panel and the direction
in which you have to pull the panel.
3. Lift the upper cover panel vertically off the casing. To support this action, press with
the thumbs against the casing.
44
accessories from the power socket before you open the casing.
(e. g. UPS).
COMpact 3000 analog/ISDN/VoIP - Firmware V4.0 - Operating Manual V06 12/2020