Message Waiting Indicator (Mwi) - Yealink SIP-T48S User Manual

You can tap the icon
Note Before listening to voice mails, ensure that the voice mail access code has been configured.
To view the voice mail via phone user interface:
Tap ->Message->View Voice Mail.
1.
The touch screen displays the amount of new and old voice mails.
You can tap the account to listen to voice mails.

Message Waiting Indicator (MWI)

The SIP-T48S IP phone supports MWI when receiving a new voice message. If someone leaves
you a voice mail, you will receive a message waiting indicator. MWI will be indicated in three
ways: a warning tone, an indicator message (including a voice mail icon) on the touch screen,
and the power indicator LED slowly flashes red. This will be cleared when you retrieve all voice
mails or delete them.
The MWI service is unsolicited for some servers, so the SIP-T48S IP phone only handles the MWI
messages sent from the server. But for other servers, the MWI service is solicited, so the
SIP-T48S IP phone must enable subscription for MWI.
Note
MWI service is not available on all servers. Contact your system administrator for more
information.
when the phone is idle to open the dialog box, and then tap Connect.
Advanced Phone Features
241