Sending Rtp Stream - Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
to people who are listening to a specific multicast group. You can configure a multicast paging
key or a paging list key on the phone, which allows you to send a Real Time Transport Protocol
(RTP) stream to the pre-configured multicast address(es) without involving SIP signaling. You
can configure the phone to receive an RTP stream from pre-configured multicast listening
address(es) without involving SIP signaling. You can specify up to 31 multicast listening
addresses.
Yealink IP phone supports the following 31 channels:
0: It is the default channel. This channel is for compatibility with the Yealink IP phones

running firmware version 80 or prior and third-party devices.
1 to 25: These channels are for compatibility with the Polycom IP phones.

26 to 30: These channels are used for separate communication among the Yealink IP

phones running firmware version 81 or later.
The IP phones will automatically ignore all incoming multicast paging calls on the different
channel.

Sending RTP Stream

To configure a multicast paging key via phone user interface:
Tap More.
1.
Tap the desired line key.
2.
Tap the gray box of the Type field, and then select Key Event from the pull-down list.
3.
Tap the gray box of the Key Type field, and then select Multicast Paging from the
4.
pull-down list.
(Optional.) Enter the string that will appear on the touch screen in the Label field.
5.
Enter the multicast IP address and port number (e.g., 224.5.6.20:10008) in the Value field.
6.
The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
Enter the desired channel in the Channel field.
7.
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