Yealink SIP-T58V/A Administrator's Manual page 513

Parameters
Web User Interface:
Account->Advanced->Voice Mail
Phone User Interface:
Message->Voice Mail->Set Voice Mail->AccountX Code
account.X.display_mwi.enable
(X ranges from 1 to 16)
Description:
Enables or disables the IP phone to present audio and visual MWI when receiving new voice
messages.
0-Disabled
1-Enabled
Note: It always works at the time of Unsolicited MWI; at the time of solicited MWI, MWI
subscription feature should be configured in advance. To present audio MWI, you also need
to set the value of the parameter "features.voice_mail_tone_enable" to 1 (Enabled) in
advance.
Web User Interface:
Account->Advanced->Voice Mail Display
Phone User Interface:
None
To configure subscribe for MWI via web user interface:
Click on Account->Advanced.
1.
Select the desired account from the pull-down list of Account.
2.
Select the desired value from the pull-down list of Subscribe for MWI.
3.
Configuring Advanced Features
Permitted Values
0 or 1
Default
1
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