Receiving Rtp Stream - Yealink SIP-T41S User Manual

User Guide for the DECT Desk Phone

Receiving RTP Stream

You can configure the phone to receive a Real Time Transport Protocol (RTP) stream from the
pre-configured multicast address(es) and channel(s) without involving SIP signaling. You can specify up
to 31 multicast addresses and channels that the phone listens to on the network.
RTP stream is listened in the speakerphone mode by default. If you want to listen the RTP stream
Note
using the engaged audio device (speakerphone, handset, or headset), contact your system
administrator for more information.
Fixed volume to play RTP stream for specified paging group is configurable by your system
administrator.
How the phone handles incoming multicast paging calls depends on Paging Barge and Paging Priority
Active parameters are configured via web user interface.
Paging Barge
Paging Barge feature defines the lowest priority of the multicast listening address from which the phone
can receive an RTP stream when there is an audio call (not a multicast paging call) in progress. If it is
disabled, all incoming multicast paging calls will be automatically ignored. If it is set to a specify priority
value, the incoming multicast paging calls with higher or equal priority are automatically answered and
the ones with lower priority are ignored. Valid values for Paging Barge:
1 to 31: Define the lowest priority of the multicast listening address from which the phone can

receive an RTP stream, 1 with the highest priority, 31 with the lowest.
Disabled: The audio call in progress will take precedence over all incoming paging calls.

Paging Priority Active
Paging Priority Active feature decides how the phone handles incoming multicast paging calls when there
is already a multicast paging call on the phone. If enabled, the phone will ignore incoming multicast
paging calls with lower priorities, otherwise, the phone will answer incoming multicast paging calls
automatically and place the previous multicast paging call on hold. If disabled, the phone will
automatically ignore all incoming multicast paging calls.
To configure multicast listening addresses via web user interface:
Click Directory->Multicast IP.
1.
Select the desired value from the pull-down list of Paging Barge.
2.
Select the desired value from the pull-down list of Paging Priority Active.
3.
Enter the multicast IP address(es) and port number (for example, 224.5.6.20:10008) which the phone
4.
listens to for incoming RTP multicast in the Listening Address field.
(Optional) Enter the label in the Label field.
5.
Label will appear on the LCD screen when receiving the multicast RTP stream.
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