Q: What are subscription tooltips?
In the Routing tab of Dante Controller, hovering over a subscription icon (at the intersection of a Tx channel and an Rx channel) shows a tooltip. If the subscription is healthy, it just shows the channel/device names and subscription type (unicast/multicast). If something's wrong, it shows a status message explaining why.
Q: What do the subscription status icons themselves mean?
| Icon/state | Meaning |
|---|---|
| Subscribed (green) | Connection established and fully functional |
| In progress / Pending (hourglass) | Subscription is still being set up (common when subscribing many channels at once) |
| Warning (yellow) | Subscription is unresolved — usually the transmitting device isn't visible on the network (removed, powered off, etc.). A firewall block can impact this process. |
| Error (red) | An error occurred, e.g. insufficient bandwidth to establish the subscription |
Q: What do the specific error/warning messages mean?
| Message | Meaning |
|---|---|
| No audio | Receiver isn't getting any audio packets. Common causes: firewall/antivirus on the machine blocking traffic, something on the network blocking propagation, or the transmitting device asleep/sleeping. |
| Incorrect sample rate: source and destination do not match | Sample rate mismatch — the receiver and transmitter are set to different sample rates. |
| Mismatched clock domains: The transmitter and receiver are not part of the same clock domain | One device has a sample rate pull-up/down setting that doesn't match the other or the device is still enrolled in a domain (DDM or Dante Director). |
| Tx Scheduler failure | Usually caused by trying to use sub-millisecond latency over a 100 Mbps link (1 ms is the minimum supported latency on 100 Mbps). |
| No Receive flows: receiver cannot support any more flows | The receiver is subscribed to too many devices — it's run out of available flows (devices generally support fewer flows than channels). |
| No more flows (TX): transmitter cannot support any more flows | Too many devices are subscribed to this transmitter via unicast (fanout limit reached). Switch the transmit channels to multicast. |
| Cannot change: Locked receiver. | The receiver is locked, so its existing subscription can't be changed. Unlock it in the Lock tab. |
| Warning: Locked transmitter. | The transmitter is locked — no new subscriptions can be created to it. Unlock it through the Lock tab. |
| Access control failure: Transmitter is locked. | A subscription attempt failed because the transmitter is locked. |