Unified Communications Module Installation and Maintenance
Page 53
15-601011 Issue 03l (28 August 2012)
IP Office
Server Maintenance: Changing the IP Address Settings
5.7 Date and Time Settings
The date and time settings used by the server PC can be changed through the server's web configuration pages.
By default the Unified Communications Module is set to use NTP with the NTP server address set to 169.254.0.1 which is
the IP Office system. This requires the IP Officesystem to be configured to get its time from a specific external SNTP
server or to have its time set manually.
1.
Login
to the server's web configuration pages.
2. Select Settings.
3. Select System.
4. The date and time settings are shown in the Date Time section.
·
Date
Shows the current date being used by the server. If Enable Network Time Protocol is selected, this is the
date obtained from the NTP server and cannot be manually changed.
·
Time
Shows the current UTC time being used by the server. If Enable Network Time Protocol is selected, this is
the time obtained from the NTP server and cannot be manually changed.
·
Timezone
In some instances the time displayed or used by a function needs to be the local time rather than UTC time.
The Timezone field is used to determine the appropriate offset that should be applied to the UTC time above.
Note that changing the timezone can cause a Session expired message to appear in the browser.
·
Enable Network Time Protocol
If this option is selected, the Unified Communications Module will attempt to obtain the current UTC time from
the NTP servers listed in the NTP Servers list below. It will then use that time and make regular NTP requests
to update the date and time. The following options are only used if Enable Network Time Protocol is
selected.
·
NTP Servers
This field is used to enter the IP address of an NTP server or servers which should be used when Enable
Network Time Protocol is selected. Enter each address as a separate line. The network administrator or
ISP may have an NTP server for this purpose. A list of publicly accessible NTP servers is available at
http://
support.ntp.org/bin/view/Servers/WebHome
, however it is your responsibility to make sure you are aware
of the usage policy for any servers you choose. Choosing several unrelated NTP servers is recommended in
case one of the servers you are using becomes unreachable or its clock is unreliable. The operating system
uses the responses it receives from the servers to determine which are reliable.
·
The IP Office system can also use NTP to obtain its system time. Using the same servers for the
Unified Communications Module and IP Office system is recommended.
·
The default time setting for the Unified Communications Module is to use NTP with the server address
set to 169.254.0.1 which is the IP Office system. When this is set, the IP Office system must be
configured to get its time from an external SNTP server or to have its time set manually.
·
Synchronize system clock before starting service
When using NTP, the time obtained by the operating system is used to gradually change the server's
hardware clock time. If this option is selected, an immediate update of the server's clock to match the NTP
obtained time is forced.
·
Use local time source
When using NTP, the time obtained by the operating system is used to gradually change the server's
hardware clock time. If this option is selected, the server's hardware clock time is used as the current time
rather than the NTP time.
5. Click Save.
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