User's Manual

106
Sending RTP Stream
To configure a Multicast Paging key via Phone interface
1. Press Menu→ Features→ Function Keys→ Line Keys as Function Keys→ Line Key2(for example).
2. Press and or Switch soft key to select the Multicast Paging in the type field.
3. Enter the multicast IP address and port number (e.g., 224.5.6.20:2000) in the Value field. The valid
multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
4. Press or Save soft key to save the configuration.
To configure a Multicast Paging key via Web interface
1. Click Function Keys→ Line key:
2. Select the desired Line Key and select Multicast Paging in the type field.
3. Enter the multicast IP address and port number (e.g., 224.5.6.20:2000) in the Value field. The valid
multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
4. Click the button to save the configuration.
Sending RTP Stream:
Press the Multicast Paging key when the phone is idle.
The phone sends RTP to a preconfigured multicast address (IP: Port). Any phone in the local network
then listens to the RTP on the preconfigured multicast address (IP:Port). For both sending and receiving
of the multicast RTP, there is no SIP signaling involved.
The Multicast Paging key LED illuminates solid green.
Receiving RTP Stream
You can configure the phone to receive a Real Time Transport Protocol (RTP) stream from the
pre-configured multicast address/addresses without involving SIP signaling. You can specify up to 10
multicast addresses that the phone listens to on the network.
How the phone handles incoming multicast paging calls depends on Paging Barge and Paging Priority
Active parameters configured via web user interface.
Paging Barge
The paging barge parameter defines the priority of the voice call in progress. If the priority of an
incoming multicast paging call is lower than that of the active call, it will be ignored automatically. If
Disabled is selected from the pull-down list of Paging Barge, the voice call in progress will take
precedence over all incoming multicast paging calls.
Valid values in the Paging Barge field:
 1 to 10: Define the priority of the active call, 1 with the highest priority, 10 with the lowest.
 Disabled: The voice call in progress will take precedence over all incoming paging calls.
Paging Priority Active
The paging priority active parameter 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.
Multicast Codec
You can only configure the codec via Web interface.
To configure Multicast Codec via Web interface