Jabra PANACAST 50 Administrator's Manual page 51

which in turn points to the public ntp time server pool.ntp.org
The PanaCast 50 Video Bar System also supports setting up an NTP server address
via DHCP option 42, or a user can manually enter an NTP server address using the
Web Console.
If the default NTP server ntp.jabra.com is not reachable during the initial out of box
setup, the PanaCast 50 Video Bar System would provide an option to set a custom
NTP server.
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