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# routeDataChannel

A data channel for communicating with the extension outside of any media session.

```
final var routeDataChannel: AVSystemRoute.DataChannel { get }
```

## Discussion

Use this channel for control messages, state synchronization, and other bidirectional
communication needs that are not tied to a specific [`AVSystemRouteSession`](/documentation/AVSystemRouting/AVSystemRouteSession-gp78).

---

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