Yealink SIP-T41P User Manual page 159

The IP phone will subscribe to the account number for MWI service by default.
The phone will send SUBSCRIBE messages for the MWI service to the account or the
Note
voice number MWI service depending on the server. Contact your system administrator
for more information.
To enable subscribe MWI to voice mail via web user interface:
1. Click on Account->Advanced.
2. Select the desired account from the pull-down list of Account.
3. Select Enabled from the pull-down list of Subscribe for MWI.
4. Select Enabled from the pull-down list of Subscribe MWI To Voice Mail.
5. Enter the desired voice mail number in the Voice Mail field.
6. Click Confirm to accept the change.
The IP phone will subscribe to the voice mail number for MWI service using
Subscribe MWI To Voice Mail.
Note
MWI subscription is configurable via web user interface only.
Advanced Phone Features
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