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We have T19_E2, T21_E2 and T40 phones. In common.cfg we have this:

Our DHCP servers in all our offices send OPTION 2 to phones with correct offset.
Everything was good on firmware v82.

Yesterday we set new firmware.url in common.cfg for all our phones and today noticed that phone with new v83 firmware display wrong time, because of wrong timezone settings. Now it`s really = 0, it seems that phone did not applied offset received by DHCP.

What i can do to fix this?

Dear Trk,

This is Evan from Yealink Support Team, nice to know you!

For offset time, it works only if the value of the parameter “local_time.summer_time” is set to 1(Enabled).

Please try to below parameters:
local_time.ntp_server1 = company.loc
local_time.interval = 3600
local_time.dhcp_time = 1
local_time.time_zone = 0
local_time.time_zone_name = None
local_time.summer_time = 1
local_time.date_format = 5

Please let me know the test result.

Best Regards,
Evan

(06-01-2018 02:12 AM)Evan_Yealink Wrote: [ -> ]For offset time, it works only if the value of the parameter “local_time.summer_time” is set to 1(Enabled).

Hello, Evan.
Our timezone is always static (UTC+3, +4 and +5), we don`t use DST.

What we should do in this situation?

---

Sorry, look`s like there is some misunderstanding.

When i said "offset" i mean "from UTC time", not "DST time".

(06-01-2018 02:12 AM)Evan_Yealink Wrote: [ -> ]For offset time, it works only if the value of the parameter “local_time.summer_time” is set to 1(Enabled).

Got it, now it works.


Case can be closed.