The Starlink radio is usually licensed as an STL only (one way operation). It is not a bi-directional radio link. This presents a unique requirement when preparing the Rincon to stream IP based audio over the Starlink radio. The Rincons IP audio stream must be configured for Multicast mode. A TCP-IP configuration will not work over the Starlink because TCP-IP connections require MAC address resolution. MAC address resolution is not possible on a one way path.
To set up a Multicast IP Profile:
1. Navigate to Configuration -> Communication Profiles -> IP
Create an IP profile similar to the one below in the Encoder and Decoder Rincon.
An IP address in the range of 239.0.0.1 thru 239.0.0.10 are recommended. An IP address from 224.0.0.0 thru 239.255.255.254 will work.
Encoder Rincon
Decoder Rincon
2. Navigate to Configuration -> Connection Map
Create a Connection Map entry similar to the one below. Select the desired audio port and desired Codec. Ensure the selected Codec does not exceed the Ethernet capacity of your Starlink MUX card configuration.
Encoder Rincon
Decoder Rincon
When using multicast, be aware how it affects your IP network. By definition, multicast traffic is broadcast to all IP devices on a network unless an Ethernet switch or router is used to stop the multicast traffic to a particular device/port or class of devices. On the flip side, unless Multicast is given priority on your network, it can be subject to interruptions by other IP traffic. Typically, the network might be set up such that RINCON Multicast or audio has the highest QoS priority (by assigning the highest priority to the Multicast IP or IP address), The RINCON “other” traffic for status & control will have 2nd highest priority (by assigning a priority based on MAC address range), and any other IP traffic is forced to have a lower QoS priority. The highest QoS priority is routed to the highest priority queue in the Ethernet switch. This will need to be set up on every Ethernet switch and router in the network. It is also worth noting, that for private IP networks, the router should block outgoing Multicast traffic. Consult your local IT guru for assistance on setting up your network for Multicast and/or QoS priorities.
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