Restoring Firmware at the Touch of a Button
Requirements:
• Firmware update, carried out
Warning: Touching voltage-carrying conductors or phone connections can cause life-threatening electric shocks.• For some installation and maintenance work, it is necessary to open the PBX while it is in operation (qualified electrician only). Make sure that the PBX is never left unattended while working with an open casing.
• Only a qualified electrician may perform installation work within an open casing or service work using the buttons inside the casing.
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.
Note: The previous firmware will only be retained in the flash memory for four weeks. After four weeks, the previous firmware will be overwritten by the current firmware to prevent the restoration of obsolete data.1.Press the Reset button on the COMpact 4000 interface board.
aReset button
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.