4
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 liquids onto the telephone since any liquid penetrating the telephone can lead to
malfunctions or destruction of the device.
• Any substances such as alcohol, chemicals, solvents or scouring agents should also be avoided
since these may damage the surface.
• Clean the telephone with a soft cloth moistened with water.
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”
Notes about Place of Use
• Operation of a SIP telephone is only permitted with indoor LAN cabling. The device shall be con-
nected to the IP infrastructure using a shielded LAN cable: Cat-5 for 100 Mb/s or Cat-6 for 1000
Mb/s. The LAN cabling of the building shall ensure that the shield of this cable is grounded.
• The telephone should be operated in a controlled environment with an ambient temperature be-
tween 5 °C and 40 °C (41 °F and 104 °F).
• 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, as this is liable to
damage the electronic equipment and the plastic casing.
• Do not operate the telephone in damp environments such as bathrooms.