> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognigy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# unregistered

Emitted when the SIP client is unregistered.

## Category

Connection

## Callback Parameters

None.

## Example

```typescript theme={null}
client.on('unregistered', () => {
  console.log('SIP client unregistered');
});
```

## More Information

* [registered](/click-to-call/sdk/event-reference/registered)
* [disconnect](/click-to-call/sdk/api-reference/disconnect)