User Guide for the VC800 Video Conferencing System
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You can also enter other IP address (for example, the IP address of the remote system) in
the Trace Route field.
If the test is successful, the VC800 system lists the hops between the system and the IP
address you entered. You can check whether congestion happens via the time cost
between hops.
6. Press to return to Diagnose menu.
General Issues
Why can’t the system place a call?
Check the network is available.
When making a call using an account, check that the account is registered.
Ensure the remote system supports the same call protocol as the local system. If you want
to place a call using another protocol, refer to Call Protocol on page 84.
Why can’t the system receive calls?
Check the network is available.
When receiving a call using an account, check that the account is registered.
Check that DND (Do Not Disturb) mode is deactivated on your system. Refer to Do Not
Disturb (DND) on page 109.
Why doesn’t the display device display the time and date correctly?
Check whether you have configured the system to obtain the time and date from the SNTP
server automatically. If the system fails to connect to the SNTP server, contact your system
administrator for more information. You can also configure the time and date manually. For
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