Content
D-SERIES
Advanced - SIP/RTP (Tab) - Multicast(Section): Multicast Support
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<multicast_listen perm="PERMISSIONFLAGS">VALIDVALUE</multicast_listen>
If enabled, the phone receives RTP G.711 u-law (20 ms) packets sent to the given multicast addresses and plays them out. It can be used for listening, in handsfree mode, for streaming audio broadcasts or public announcements etc.
on, off
off