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# activity$

> Observable of active call states for this address.

```ts
get activity$(): Observable<CallState[]>
```

Observable of active call states for this address.

> **Warning**
>
> **Not yet implemented in v4.** `activity$` and `activity` require presence support and throw when accessed.

## **Throws**

Requires presence support.

## activity

```ts
get activity(): CallState[]
```

Active call states for this address.

## **Throws**

Requires presence support.

## **Examples**

```ts
address.activity$.subscribe((activity) => {
  console.log('activity:', activity);
});
```

> Observable of active call states for this address.