Yealink SIP-T4X, Administration Manual

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Configuring Advanced Features
147
Multicast paging allows IP phones to send/receive Real-time Transport Protocol (RTP)
streams to/from the pre-configured multicast address(es) without involving SIP signaling.
Up to 10 listening multicast addresses can be specified on the IP phone.
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 IP phones.
When the IP phone sends the RTP stream to a pre-configured multicast address, each IP
phone that preconfigured to listen to the multicast address can receive the RTP stream.
When the originator stops sending the RTP stream, the subscribers stop receiving it.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File <y0000000000xx>.cfg
Assign a multicast paging key.
For more information, refer to
Multicast Paging Key on page
394 .
Specify a multicast codec for the
IP phone to use for multicast RTP.
For more information, refer to
Sending RTP Stream on page 334 .
Local
Web User Interface
Assign a multicast paging key.
Navigate to:
http://<phoneIPAddress>/servlet
?p=dsskey&model=1&q=load&li
nepage=1
Specify a multicast codec for the
IP phone to use to send the RTP
stream.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Phone User Interface Assign a multicast paging key.
To configure a multicast paging key via web user interface:
1. Click on DSSKey->Line Key.