Yealink SIP-T48G - Manual (Page 152)

User Guide for the SIP-T48G IP Phone
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To view the voice mail via phone user interface:
1. Tap ->Messages->View Voice Mail.
The touch screen displays the amount of new and old voice mails
You can tap the account to listen to voice mails.
The SIP-T48G 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 slow 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-T48G IP phone only handles
the MWI messages sent from the server. But for other servers, the MWI service is
solicited, so the SIP-T48G IP phone must enable subscription for MWI.
Note
The MWI subscription parameters you need to know:
Options Description
Subscribe for MWI Enable or disable a subscription for MWI service.
MWI Subscription Period
Period of MWI subscription. The IP phone sends a
refresh SUBSCRIBE request before initial subscription
expires.
Subscribe MWI To Voice
Mail
Enable or disable a subscription to the voice mail
number for MWI service.
To use this feature, you should also configure the
MWI service is not available on all servers. Contact your system administrator for more
information.