T28P - 2.73 firmware.. USA Timezone

[toxicfusion]

Hello,

I'm having a difficult time forcing & configuring my auto-provisioned Yealink T28P Phones time zone. This has been a problem for a LONG time. Not sure what I'm doing wrong.

Trying to FORCE the time zone on office phones to -5 United States-Eastern Time.

What is the appropriate syntax?

Currently using:

local_time.time_zone = -5
local_time.time_zone_name = United States-Eastern
local_time.summer_time = 2
local_time.time_format = 0

However -- apparently. When using "local_time.time_zone = -5"

The phone always defaults to -5 Bahama's

need USA - Eastern Time. help!