Matrix SPARSH VP110 User Guide 61
In this case, if the Manual Time option is also disabled (see the web interface) and the IP phone receives
date and time in 200 OK SIP response from the SIP server, then the IP phone will automatically update the
time as obtained from the SIP server. To update the time from the NTP server next time (provided the NTP
server is functional and the IP phone can query for the updated time from the NTP server), you must restart
the IP phone.
The time and date display can use one of several different formats.
Time Zone
A time zone is a region on Earth that has a uniform standard time. It is convenient for areas in close commercial or
other communication to keep the same time. When configuring the IP phone to obtain the time and date from the
NTP server, you must set the time zone.
Daylight Saving Time
Daylight Saving Time (DST) is the practice of temporary advancing clocks during the summertime so that evenings
have more daylight and mornings have less. Typically, clocks are adjusted forward one hour at the start of spring
and backward in autumn. Many countries have used the DST at various times, details vary by location. The DST
can be adjusted automatically from the time zone configuration. Typically, there is no need to change this setting.
The following table lists available configuration methods for time and date.
Procedure
Configuration changes can be performed using the configuration files or locally.
Option ConfigurationMethods
TimeZone
ConfigurationFiles
WebUserInterface
PhoneUserInterface
Time
WebUserInterface
PhoneUserInterface
TimeFormat
ConfigurationFiles
WebUserInterface
PhoneUserInterface
Date
WebUserInterface
PhoneUserInterface
DateFormat
ConfigurationFiles
WebUserInterface
PhoneUserInterface
DaylightSavingTime
ConfigurationFiles
WebUserInterface