Configuring date and time

Last Updated : Apr 17, 2026 |
Prolog information
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  1. Log in to the web interface.
  2. In the navigation pane, click Date & Time.
  3. In the Daylight Saving section, configure the following:
    • Daylight Saving Mode: Select one of the following options:
      • No daylight saving time
      • Manual daylight savings activated (time set to DSTOFFSET)
      • Automatic daylight savings adjustment (as specified by DSTSTART and DSTSTOP) (Default)
    • DST Offset: Specifies the time in hours between the standard time and daylight savings time. Select one of the following options:
      • 0
      • 1 hour (default)
      • 2 hours
    • DST Start: Specifies when to apply the offset for daylight savings time. The value format must be either odddmmmht or Dmmmht, where:
      • o represents a one-character ordinal adjective. For example, 1 for first, 2 for second, 3 for third, 4 for fourth, or L for last.
      • D represents 1 or 2 ASCII digits or characters representing the date of the month.
      • ddd represents three characters containing the English abbreviation for the day of the week. For example, Sun for Sunday, Mon for Monday, etc.
      • mmm represents a three-character English abbreviation for the month. For example, Jan for January, Feb for February, etc.
      • h represents a one-numeric digit representing the time to make the adjustment at hAM (0h00 in military format).
        The valid values of h are from 0 to 9.
      • t represents one character for the time zone to which the changes are applied. For example, “L” for local time or “U” for Universal Time.
    • DST Stop: Specifies when to stop the offset for daylight saving time. The value format must be either odddmmmht or Dmmmht, where:
      • o represents a one-character ordinal adjective. For example, 1 for first, 2 for second, 3 for third, 4 for fourth, or L for last.
      • D represents 1 or 2 ASCII digits or characters representing the date of the month.
      • ddd represents three characters containing the English abbreviation for the day of the week. For example, Sun for Sunday, Mon for Monday, etc.
      • mmm represents a three-character English abbreviation for the month. For example, Jan for January, Feb for February, etc.
      • h represents a one-numeric digit representing the time to make the adjustment at hAM (0h00 in military format).
        The valid values of h are from 0 to 9.
      • t represents one character for the time zone to which the changes are applied. For example, “L” for local time or “U” for Universal Time.
  4. Click one of the following:
    • Save: To save the configuration changes.
    • Reset to Default: To revert to the default values.
AFTER COMPLETING THE TASK
Note:
The phone can obtain date and time from an NTP server. If an NTP server is not configured or cannot be accessed, a SIP server is used. If the phone operates in CCMS mode in IP Office environment and connects to the SIP server to get date and time and displays incorrect date and time values, the SIP server may have an incorrect or inaccurate date and time configuration.