Configuring Advanced Features
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3. Select the desired value from the pull-down list of Voice Mail Display.
4. Click Confirm to accept the change.
Multicast Paging
Multicast paging allows IP phones to send/receive Real-time Transport Protocol (RTP) streams
to/from the pre-configured multicast address(es) on the desired channel without involving SIP
signaling. Up to 31 listening multicast addresses can be specified on the IP phone.
Yealink IP phones support the following 31 channels:
0: Yealink IP phones running old firmware version (old paging mechanism) and third-party
devices (e.g., Cisco IP phones) supporting paging with Yealink IP phones running old
firmware version are all grouped into the channel 0. This is for compatibility with the old
Yealink IP phones and third-party devices.
1 to 25: each corresponds to the Polycom’s channel 1 to 25 respectively. This is for
compatibility with the Polycom IP phones.
26 to 30: This is for separate communication among the Yealink IP phones running new
firmware version (new paging mechanism).
The IP phones will automatically ignore all incoming multicast paging calls on the different
channel.
Sending RTP Stream
Users can send an RTP stream without involving SIP signaling by tapping a configured multicast
paging key or a paging list key. A multicast address (IP: Port) and a channel (0 to 30) should be
assigned to the multicast paging key, which is defined to transmit RTP stream to a group of
designated IP phones on the desired channel.
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