Yealink SIP-T2 SERIES Administrator's Manual page 608

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
5. Enter the desired voice number in the Voice Mail field.
6. Click Confirm to accept the change.
To configure the presentation of audio and visual MWI via web user interface:
1. Click on Account->Advanced.
2. Select the desired account from the pull-down list of Account.
3. Select the desired value from the pull-down list of Voice Mail Display.
4. Click Confirm to accept the change.
SMS feature allows users to send and receive text messages using Yealink IP phones. It
depends on support from a SIP server.
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