4
Important Notes
Software update
During a software update, the phone must not be disconnected from the power supply unit and/or
the LAN. An update action is indicated by messages on the display and/or by flashing LEDs.
Care and cleaning instructions
• Never spray the phone with liquids as the penetrating fluids may lead to malfunctions or damage
the device.
• Do not use substances such as alcohol, chemicals, solvents, or scouring agents, as these sub-
stances may lead to surface damage.
Clean the phone with a soft and slightly damp cloth.
Online documentation
This document along with additional information is available online at:
Support.
Technical notes, current information about firmware updates, frequently asked questions, and lots
more can be found on the Internet at:
License information
More information about the EULA and Open Source licenses you can find on the Web interface
section ”Licenses”
Installation location information
• The telephone may be operated only using the LAN cabling inside a building. The device should
be connected to the IP infrastructure using a shielded LAN cable: Cat-5 for 100 Mb/s or Cat-6
for 1000 Mb/s. In the building installation, make sure that the shield of this cable is earthed.
• The telephone is designed for operation in a protected environment within a temperature range
of 5 °C to 40 °C.
• Do not install the telephone in a room where large quantities of dust accumulate; this can con-
siderably reduce the service life of the telephone.
• Do not expose the telephone to direct sunlight or any other source of heat. This is liable to da-
mage the electronic components and the casing.
• Do not install the telephone in bathrooms or shower rooms.
