Auto provision username and password

[Yealink Support]

Pleaes let's know which version of your T28 is ,yealink latest version is 2.72.0.75 which you can download from Yealink website.
http://www.yealink.com/SupportDownloadfi...4&flag=142

normally if your provisioning server need user name and password to authenticate and you configure the user name and password in the phone, the phone will send the user name and password.
for example , your provisioning server is 10.2.1.199, the user name is wxh, pw is 2333,
you can configure the auto provisioning server url with http://wxh:233@10.2.1.199
or you can configure the user name for example wxh in the User Name and the password 233 in the password under Auto Provision->
Settings page.
please test and let us know if any question.