Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Format field.
3. Press or , or the Switch soft key to select the desired date format from the Date
Format field.
4. Press the Save soft key to accept the change.
Daylight Saving Time (DST)
Daylight Saving Time (DST) is the practice of temporary advancing clocks during the summer
time 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. By default, the DST is set to Automatic, so it can
be adjusted automatically from the current time zone configuration. You can configure DST for
the desired area as required.
Procedure
Daylight saving time can be configured using the following methods.
Central Provisioning
(Configuration File)
<MAC>.cfg
Configure DST.
Parameters:
local_time.summer_time
local_time.dst_time_type
local_time.start_time
local_time.end_time
local_time.offset_time
Web User Interface
Configure DST.
Navigate to:
http://<phoneIPAddress>/servlet?p=setting
s-datetime&q=load
Details of Configuration Parameters:
Parameters
Permitted Values
Default
local_time.summer_time
0, 1 or 2
2
Description:
Configures Daylight Saving Time (DST) feature.
0-Disabled
1-Enabled
2-Automatic