Message; Mwi（Message Waiting Indicator - 2N IP Handset User Manual

user to send a Real Time Transport Protocol (RTP) stream to the pre-configured
multicast address without involving SIP signaling. You can also configure the phone to
receive an RTP stream from pre-configured multicast listening address without involving
SIP signaling. You can specify up to 10 multicast listening addresses.

9.3 Message

MWI（Message Waiting Indicator）
9.3.1
If the service of the lines supports voice message feature, when the user is not available
to answer the call, the caller can leave a voice message on the server to the user.
The user will be notified of the server voice message and the status of the power lamp.
Picture 10 - New Voice Message Notification
To listen to a voice message, the user must first configure the voicemail number. After
the voicemail number is configured, the user can retrieve the voicemail of the default
line.
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