Yealink SIP-T23 Provisioning Manual page 227

Parameter
features.voice_mail_tone.enable
features.missed_call_popup.enable
features.forward_call_popup.enable
Permitted
Descriptions
Values
0-Disabled
1-Enabled
The default value is 1.
It enables or disables the IP phone to play a
warning tone when it receives a new voice
mail.
0 or 1
0-Disabled
1-Enabled
The default value is 1.
It enables or disables the IP phone to display
the pop-up message when the phone misses
a call.
0 or 1
0-Disabled
1-Enabled
The default value is 1.
It enables or disables the IP phone to display
the pop-up message when the phone
forwards an incoming call to other party.
0 or 1
0-Disabled
1-Enabled
Appendix
Web Setting Path
Features->Notification Popups->
Display Missed Call Popup
Features->Notification
Popups->Display Forward Call Popup
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