Cisco Cisco TelePresence MCU 4510 Maintenance Manual
Displaying and resetting system time
Cisco TelePresence MCU Version 4.2 Printable online help
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Displaying and resetting system time
The system date and time for the MCU can be set manually or using the Network Time Protocol
(NTP).
(NTP).
To configure Time settings, go to Settings > Time.
Note that changing the time or NTP settings will have an effect on the recorded times in the Call Detail
Records log. For more information, refer to
Records log. For more information, refer to
System time
The current system date and time is displayed.
If you do not have NTP enabled and need to update the system date and/or time manually, type the
new values and click Change system time.
new values and click Change system time.
NTP
The MCU supports the NTP protocol. Configure the settings using the table below for help, and then
click Update NTP settings.
click Update NTP settings.
The MCU re-synchronizes with the NTP server via NTP every hour.
If there is a firewall between the MCU and the NTP server, configure the firewall to allow NTP traffic to
UDP port 123.
UDP port 123.
If the NTP server is local to Port A or Port B then the MCU will automatically use the appropriate port
to communicate with the NTP server. If the NTP server is not local, the MCU will use the port that is
configured as the default gateway to communicate with the NTP server, unless a specific IP route to
the NTP server's network/IP address is specified. To configure the default gateway or an IP route, go
to Network > Routes.
to communicate with the NTP server. If the NTP server is not local, the MCU will use the port that is
configured as the default gateway to communicate with the NTP server, unless a specific IP route to
the NTP server's network/IP address is specified. To configure the default gateway or an IP route, go
to Network > Routes.
Field
Field description
Usage tips
Enable NTP
If selected, use of the NTP protocol is
Enabled on the MCU.
Enabled on the MCU.
UTC offset
The offset from the time zone that you are
in from Co-ordinated Universal Time
(UTC). UTC is in broad terms equivalent to
Greenwich Mean Time. The offset allows
you to set a local time appropriate to the
geographic location of the MCU and/or
adjust for daylight saving.
in from Co-ordinated Universal Time
(UTC). UTC is in broad terms equivalent to
Greenwich Mean Time. The offset allows
you to set a local time appropriate to the
geographic location of the MCU and/or
adjust for daylight saving.
The offset can be -12 to 14 hours and can
be set in the format hh:mm (or -hh:mm for
negative offsets) to specify locations that
vary from UTC in half hours. For example,
for Rangoon which is six and a half hours
ahead of UTC, the offset is 6:30. You do
not need to enter the minutes for whole
hours, so an offset of one hour is 1.
be set in the format hh:mm (or -hh:mm for
negative offsets) to specify locations that
vary from UTC in half hours. For example,
for Rangoon which is six and a half hours
ahead of UTC, the offset is 6:30. You do
not need to enter the minutes for whole
hours, so an offset of one hour is 1.
You must update the offset manually when
the clocks go backwards or forwards: the
MCU does not adjust for daylight saving
automatically.
the clocks go backwards or forwards: the
MCU does not adjust for daylight saving
automatically.
NTP host
The IP address or hostname of the server
that is acting as the time keeper for the
network.
that is acting as the time keeper for the
network.
Note that square brackets are mandatory
for IPv6 addresses.
for IPv6 addresses.