Time localization ensures that the time on the is correctly displayed when the crosses time zones and daylight saving time (DST) boundaries.
Universal time coordinated (UTC) was also called Greenwich Mean Time (GMT). UTC is absolute time used by many communications standards.
All data on the and NEs are stored in UTC format.
Time Zone: The world is split into 24 time zones, each spanning a 15 degree-wide longitudinal band. The time offset between adjacent time zones is one hour.
If the preset time zone of the system is incorrect, the backup operation timed at 04:00 am (the time when the network traffic is small) may be performed in the daytime (the time when the network traffic is heavy). As a result, the CPU is overloaded and this problem is difficult to locate. Therefore, the system time zone must be set to the device location time zone.
People stipulate the DST system to save resources. During the DST implementation, the time is called daylight saving time. In summer, people usually adjust the time one hour earlier because the sun rises earlier in this season. This makes people go to bed and get up early, therefore reducing electric power illumination, making full use of illumination energy, and saving the illumination power.
Countries have different stipulations for DST. Many countries in the world are using the legal form and moving the clock one hour forward during summer days. Few of them also move the clock half an hour or several hours forward. In winter, they adjust the time to its normal state. Such time is called DST, a legal form of time.
If the or the NE is in a DST observing country or region, synchronize the system time and network elements time with DST and adjust time sensitive services based on DST to ensure that time information in accounting, billing, alarm, and log records is correct.
The supports time localization. That is, the time it displays is the local time. The local time is calculated based on the UTC time, time zone, and DST.
The time on the client is displayed in two modes: client local time and server local time.
The also allows users to set the alarm/event time display mode to NE time, server time, or client time.