• When using a wireless network, radio or electromagnetic interference or weak reception may
cause the following problems to occur during meetings:
• Delays in video streaming.
• Video is stopped.
• Audio of other party cuts out.
• Synchronization between video and audio is lost.
• Audio quality deteriorates.
• Meetings are automatically ended or left.
• Delays in video streaming occur when sharing computer screen.
• Your video and the other party’s video disappear and only audio is heard.
• Screen image does not display properly when the screen layout is changed.
• The Contact List or contact status do not appear, or it takes longer than expected for
each to be displayed.
• The attempt to update the firmware fails, or it takes an excessively long time for the
update to finish.
• The machine does not start.
• You cannot connect to other party.
If you experience one of the problems above, take one of the following actions. The action to
be taken depends on the wireless network environment you are using:
• If IEEE802.11b and IEEE802.11g/n are in the same wireless network environment, the
IEEE802.11b connection may be used first. The recommended line speed for the
machine is 1 Mbps. To use the machine at a stable line speed, we recommend using it in
a wireless network environment in which only IEEE802.11g/n is available.
• Avoid environments that have multiple wireless LAN standards.
• Turn off any wireless networking or radio devices that are not being used.
• If there are multiple devices in the environment that support IEEE802.11n, use
IEEE802.11n with a single channel.
• Use the machine in an environment with stable reception, making sure to confirm the
distance from the access point and check for any obstructions.
• If the environment has multiple wireless LAN standards, change the access point channel.
There should be a difference of at least five between the channel settings for each LAN
standard. For example, set one standard to channel 1 and the other to channel 6.
• Keep the machine as far away as possible from highly conductive objects such as metal.
• This wireless product uses the 2.4 GHz band. Make sure there is no industrial, scientific,
or medical equipment that uses the same frequency band currently in operation, such as
a microwave. Interference can cause communication to become unstable. Before using
Using the RICOH UCS Function
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