Specifications

User Guide for the SIP-T48G IP Phone
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2. Tap the desired group.
3. Tap the Paging soft key to send RTP.
4. Tap the Hold soft key to place the current multicast RTP session on hold.
5. Tap the End Call soft key to cancel the multicast RTP session.
You can configure the phone to receive a Real Time Transport Protocol (RTP) stream from
the pre-configured multicast address(es) 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