Yealink SIP-T2xP Auto Provisioning Manual page 207

Parameter
features.ringer_device.is_use_headset =
features.factory_pwd_enable =
features.export_cfg_erase_pwd =
Permitted Values
using the handset.
0-Disabled
1-Enabled
The default value is 1.
It configures the ringer device for the phone
in the headset mode.
0-Use Speaker
0, 1 or 2
1-Use Headset
2-Use Headset & Speaker
The default value is 0.
It enables or disables the phone to prompt
for the administrator password when you
long press the OK key to perform factory
reset.
0 or 1
0-Disabled
1-Enabled
The default value is 0.
It configures the phone to export the
0 or 1 configuration file with what type of
password.
Descriptions
Features->Audio-> Ringer Device for
Headset
Appendix
Web Setting Path
197