Auerswald COMpact 4000 Operation Manual page 709

Warning: Touching voltage-carrying conductors or telephone connections
can cause life-threatening electric shocks.
• For some installation and maintenance work, it is necessary to open the
• Only a qualified electrician may perform installation work within an open
Warning: Power surges, which can occur during electrical storms, can
cause life-threatening electric shocks and damage or destroy the PBX.
• Do not open the PBX during an electrical storm.
1. Press the Reset button on the COMpact 4000 interface board.
A Reset button
B Altern. button
2. Within the space of two seconds, push the Altern. button on the COMpact 4000
interface board and hold it.
The Status LED (LED at the centre) starts to quickly blink in orange.
After a few seconds, the blinking of the Status LED will slow down.
3. Let go of the Altern. button.
The Firmware is restored.
COMpact 4000 - Firmware V6.6A - Installation, Operation and Configuration V03 03/2016
PBX while it is in operation (qualified electrician only). Make sure that the
PBX is never left unattended while working with an open casing.
casing or service work using the buttons inside the casing.
Restoring the Firmware in use Prior to the Firmware Update
Service and Maintenance
Firmware Update
709