Yealink SIP-T2 Series Administrator's Manual page 134

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
Values 1-DST by Week
Default 0
Web UI Settings->Time&Date->Fixed Type
Parameter local_time.start_time
It configures the start time of the Daylight Saving Time (DST).
Description
It works only if "local_time.summer_time" is set to 1 (Enabled).
Month/Day/Hour-DST by Date, use the following mapping:
Month: 1=January, 2=February,..., 12=December
Day: 1=the first day in a month,..., 31= the last day in a month
Hour: 0=0am, 1=1am,..., 23=11pm
Permitted
Month/Week of Month/Day of Week/Hour of Day-DST by Week, use the following mapping:
Values
Month: 1=January, 2=February,..., 12=December
Week of Month: 1=the first week in a month,..., 5=the last week in a month
Day of Week: 1=Monday, 2=Tuesday,..., 7=Sunday
Hour of Day: 0=0am, 1=1am,..., 23=11pm
Default 1/1/0
Web UI Settings->Time&Date->Start Date
Parameter local_time.end_time
It configures the end time of the Daylight Saving Time (DST).
Description
Note: It works only if "local_time.summer_time" is set to 1 (Enabled).
Month/Day/Hour-DST by Date, use the following mapping:
Month: 1=January, 2=February,..., 12=December
Day: 1=the first day in a month,..., 31= the last day in a month
Hour: 0=0am, 1=1am,..., 23=11pm
Permitted
Month/Week of Month/Day of Week/Hour of Day-DST by Week, use the following mapping:
Values
Month: 1=January, 2=February,..., 12=December
Week of Month: 1=the first week in a month,..., 5=the last week in a month
Day of Week: 1=Monday, 2=Tuesday,..., 7=Sunday
Hour of Day: 0=0am, 1=1am,..., 23=11pm
Default 12/31/23
Web UI Settings->Time&Date->End Date
Parameter local_time.offset_time
It configures the offset time (in minutes) of Daylight Saving Time (DST).
Description
Note: It works only if "local_time.summer_time" is set to 1 (Enabled).
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