Specifications

Aastra July 2014 PA-001011-03-04
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4.4.4 RTPMTx
The RTPMTx URI instructs the phone to transmit a Multicast RTP stream. The RTPMTx format to
use with the AastraIPPhoneExecute object in the URI is:
RTPMTx:i:p:[mix]:[disableIcon]
Where
• i specifies the Multicast IP Address to which an RTP stream is transmitted.
• p specifies the UDP port on which to transmit the RTP stream. You must ensure that this is
a number greater than 3100 to make sure not to use a port already bound to the phone.
• mix (optional) specifies that the RTP stream sent will be the existing audio stream if it
exists.
• disableIcon (optional) specifies that the “mix” icon is not displayed (if “mix” is configured in
the command).
Scenarios for “mix” RTP
Phone State
Action
Phone is in “idle” state
Phone initiates a new RTP session on the
paging line and the paging line is displayed.
Phone is in “connected” state
Phone starts sending the mixed RTP stream.
Paging line is not displayed.
Phone is in a 3-way conference.
Request for sending RTP is declined.
57iCT/9480iCT, base and handsets are in a
“connected” state.
Request for sending RTP is declined.
57iCT/9480iCT, handset is in “connected” state.
Paging call is initiated using the voice stream
with the mixed audio from the conference
stream, paging line is not displayed.
The active voice call is dropped (RTP stream
was being played on top of this voice call).
RTP stream is dropped as well.
A new call comes in while the active voice call
(RTP stream was being played on top of this
voice call) is put on hold.
RTP mixed stream is sent for the current active
call.
Example 1:
This example orders the phone to send a multicast RTP stream to 239.0.1.20 from UDP port
21000.
<AastraIPPhoneExecute>
<ExecuteItem URI = ”RTPMTx:239.0.1.20:21000”/>
</AastraIPPhoneExecute>