Additional Features
227
GROUP RTP PAGING
You can configure the phone to allow it to receive a Real Time Transport Protocol (RTP) stream
from pre-configured multicast address(es) without involving SIP signaling. This is called Group
Paging on the IP phones. You can specify up to 5 multicast addresses that the phone listens
for on the network. This feature is configurable using the Mitel Web UI only.
The 6873i in the local network listens for RTP on the pre-configured multicast address. The
Phone displays the Paging message to the phone’s LCD. It uses the G711 uLaw CODEC for
multicast RTP.
The recipient can drop the incoming page if required. The recipient can also set DND to ignore
any incoming pages.
For incoming RTP multicasts, the ringing display is dependent on the setting for the
Allow
Barge In
parameter (see
“Allow Barge In”
on
page 225
). If this parameter is disabled, and there
is no other call on the phone, then the paging is automatically played via the default audio device.
If there is an existing call on the phone, the call initially displays in the ringing state. The user
has the option to accept/ignore the call. If the
Allow Barge In
parameter is enabled, the RTP
multicast call barges in, and any existing calls are put on hold.
If an RTP multicast session already exists on the phone, and the phone receives another
incoming RTP multicast session, the priority is given to the first multicast session and the second
multicast session is ignored. The behavior for the incoming calls in this case is also based on
the setting for the
Allow Barge In
parameter. The incoming call is handled as if there were an
existing call already on the phone.
CONFIGURING GROUP RTP PAGING
1.
Click on
Basic Settings > Preferences > Group Paging RTP Settings
.
2.
In the
Paging Listen Addresses
text box, enter the multicast IP address(es) and port
number on which the phone listens for incoming multicast RTP packets.
Enter the IP address in dotted decimal format
(for example, 239.0.1.15:10000,239.0.1.20:15000)
You can enter up to 5 listening multicast addresses.
If this field is blank, the paging listening capability is disabled on the phone.
3.
Click
Save Settings
.
MITEL WEB UI
Notes:
1.
Recipient of a paging call can set a global DND to ignore any incoming pages.
2.
For incoming paging, the phone uses the Intercom configuration settings. The
incoming page is dependent on the
Allow Barge In
parameter setting and the
idling/on call state.
