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# FaxAction

> Action handle for an active fax send or receive operation.

[call-send-fax]: /docs/server-sdks/reference/typescript/relay/call/send-fax

[call-receive-fax]: /docs/server-sdks/reference/typescript/relay/call/receive-fax

[base-action-interface]: /docs/server-sdks/reference/typescript/relay/actions

[stop]: /docs/server-sdks/reference/typescript/relay/actions/fax-action/stop

Returned from [`call.sendFax()`][call-send-fax] or
[`call.receiveFax()`][call-receive-fax]. Tracks
an active fax send or receive operation. Terminal states: `finished`, `error`.

Inherits all properties and methods from the
[base Action interface][base-action-interface] (`controlId`,
`isDone`, `completed`, `result`, `wait()`).

## **Properties**

No additional properties beyond the [base Action interface][base-action-interface].

## **Methods**

#### [stop](/docs/server-sdks/reference/typescript/relay/actions/fax-action/stop)

Stop the fax operation.

## **Example**

```typescript {11}
import { RelayClient } from '@signalwire/sdk';

const client = new RelayClient({
  project: process.env.SIGNALWIRE_PROJECT_ID!,
  token: process.env.SIGNALWIRE_API_TOKEN!,
  contexts: ['default']
});

client.onCall(async (call) => {
  await call.answer();
  const action = await call.sendFax('https://example.com/invoice.pdf', {
    identity: '+15559876543',
  });

  const event = await action.wait();
  const faxInfo = (event.params.fax ?? {}) as Record<string, unknown>;
  console.log(`Fax pages: ${faxInfo.pages}`);
});

await client.run();
```

> Action handle for an active fax send or receive operation.

## Docs

- [stop](https://signalwire.com/docs/server-sdks/reference/typescript/relay/actions/fax-action/stop.md): Stop the fax operation.