# crossfireTelemetryPush()

This functions allows for sending telemetry data toward the TBS Crossfire link.

When called without parameters, it will only return the status of the output buffer without sending anything.

@status current Introduced in 2.2.0, retval nil added in 2.3.4

## Parameters

* `command` command
* `data` table of data bytes

## Return value

* `boolean` data queued in output buffer or not.
* `nil` incorrect telemetry protocol.