The reason is that our RTP source/sink can be more extensively configured than the Audio over IP source/sink which are designed to conform to regular AES67/Ravenna configuration.
This section explains how to set up a simple redundancy — a single device sends out redundant streams over two seperate network ports. These are received at one end point, which can switch between the streams for failover redundancy.
Always: The RTP Port the transmitting system is streaming to.
Multicast only: The Multicast source, Multicast group and/or Multicast interface you wish to use.
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How do I find out which ports the transmitting system is streaming to?
You should be able to find this information in the stream setup of the transmitting system. Alternatively, the SDP of the transmission will reveal the used ports (normally a 4-digit number).
Set up the desired PIPE, including an RTP source element.
Click on the RTP source element to open its element configuration menu.
Under Sources, you can define multiple sources. Each Source:
must be added as a New Entry.
must have a unique combination of RTP Port, Multicast group, Multicast source and Multicast interface assigned, corresponding to the incoming stream.
must have matching Group ID.
Click on +Add to add the configured source to the list of Sources.
Repeat steps 3-4 for the desired number of Sources (normally 2).
You may also define a Preferred group ID (this defines which stream to use if both are available, including automatic switch back after failure)
Click Apply.
Your redundant AoIP input is now configured. Continue with configuration of the remaining PIPE.
This section explains how to set up a double redundancy — two (or more) devices each send out two redundant streams over two seperate network ports. The result is that 4 identical streams are sent over four network ports from two devices.