To avoid unexpected accident, personal injury or device damage, read the safety disclaimers and installation warnings.

Power Safety

  • Use only the power cord or power adapter provided with the PBX.
  • Keep the power off during the installation.
  • Make sure that the supply voltage matches the specifications indicated on the back panel of the device.
  • To avoid the electric accident, do not open or remove the cover of PBX when it is working as well as off the power.
  • Before cleaning the device, cut off the power supply.


Install the PBX in a location that is clean, free from vibration, electric shock, and temperature/humidity extremes.

The operating temperature should be kept below 104°F (40°C)