---
title: "provider(_:didActivate:)"
framework: callkit
role: symbol
role_heading: Instance Method
path: "callkit/cxproviderdelegate/provider(_:didactivate:)"
---

# provider(_:didActivate:)

Called when the provider’s audio session is activated.

## Declaration

```swift
optional func provider(_ provider: CXProvider, didActivate audioSession: AVAudioSession)
```

## Parameters

- `provider`: The telephony provider.
- `audioSession`: The audio session that was activated.

## See Also

### Handling Changes to Audio Session Activation State

- [provider(_:didDeactivate:)](callkit/cxproviderdelegate/provider(_:diddeactivate:).md)