Yealink SIP T46G Administrator's Manual page 148

5. Enter the desired voice 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 WM feature.
The multicast paging feature allows the IP phones to send/receive Real-time Transport
Protocol (RTP) stream to/from the pre-configured multicast address(es) without involving
SIP signaling. You can specify up to 10 listening multicast addresses on IP phones.
Users can send an RTP stream without involving SIP signaling by pressing a configured
multicast paging key. A multicast address (IP: Port) should be assigned to the multicast
paging key, which is defined to transmit RTP stream to a group of designated the IP
phones. When the IP phone sends the RTP stream to a pre-configured multicast address,
each IP phone that has been configured to listen to the multicast address can receive
the RTP stream. When the originator stops sending the RTP stream, the subscribers stop
receiving the RTP stream.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File <y000000000028>.cfg
Configuring Advanced Features
Assign a multicast paging key.
For more information, refer to
Multicast Paging Key on page
135