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Autoprovisioned settings reverting to defaults after a period of time
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Kevin_Yealink Offline

Posts: 204
Joined: Jul 2016
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Post: #2
RE: Autoprovisioned settings reverting to defaults after a period of time
(02-01-2018 11:29 PM)Inline Computer Support Wrote:  Hello, I have posted this in SFB section but received no response, trying here.

I have a network of ten T46S and two T48S phones, configured using autoprovisioning. For the most part this seems to work, the phones pick up the settings correctly. However after some time (15-60 minutes) the phones will revert several of the autoprovisioned settings back to defaults. The settings that revert are:

Time&Date -> Time Format: reverts to 24 hours after being set to 12 hours.
Power Saving -> Idle TimeOut: Office Hour Idle TimeOut is set to 960 minutes, but reverts to 15 minutes.

There are other settings this happens on but these are the most important to my users. Autoprovisioning is configured to repeat every 60 minutes but that does not help - once the settings are reverted they do not update again. Rebooting or autoprovisioning triggered manually via the web interface does not help. Making changes to the config files (even superficial changes) and then trying an autoprovision will usually make it work, but then once again after some time it reverts.

I have also noticed that the phones do not detect updated firmware files on tftp, example my phones are on firmware, I have changed the tftp firmware file to (filename remains the same), but no phones have updated. What is wrong here?

My autoprovision config files:


static.network.cdp.enable = 0
features.remember_password.enable = 1
features.intercom.enable = 1
features.intercom.outgoing = 1
features.intercom.allow = 1
static.firmware.url = tftp://
features.sign_in_via_btoe.enable = 0
features.pin_authentication.enable = 0
features.web_sign_in_enable = 1
features.user_sign_in.enable = 0
phone_setting.phone_lock.enable = 0


static.auto_provision.repeat.enable = 1
static.auto_provision.repeat.minutes = 60


local_time.time_zone = -8
local_time.time_zone_name = Canada(Vancouver,Whitehorse)
local_time.ntp_server1 =
local_time.ntp_server2 =
local_time.interval = 3600
local_time.summer_time = 2
local_time.dst_time_type = 0
local_time.manual_time_enable = 0
local_time.manual_ntp_srv_prior = 0
local_time.time_format = 0
local_time.date_format = 3

Dear friend,

For your first question about time format, it is about server policy issue. So you need change it from SFB policy. Just like:
Set-CsIPPhonePolicy -DateTimeFormat 12

For your second questions, after auto provision for first time, if you don't change your cfg file, then it will provision failed as Yealink phone will compare MD5 of CFG file every time. If the MD5 is the same, then it will not update as phone think it don't need update the same configuration.

So if you want to upgrade firmware or do auto provision, please change that cfg file.
Let me know if any update.

Best Regards,
02-05-2018 09:58 AM
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RE: Autoprovisioned settings reverting to defaults after a period of time - Kevin_Yealink - 02-05-2018 09:58 AM

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