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# INCallsDomainHandling

Provides a convenient way to adopt all of the protocols in the VoIP calling domain.

```
protocol INCallsDomainHandling : INSearchCallHistoryIntentHandling, INStartAudioCallIntentHandling, INStartVideoCallIntentHandling
```

## Overview

The [`INCallsDomainHandling`](/documentation/Intents/INCallsDomainHandling) protocol is a convenience protocol that adopts all of the protocols used to handle call-related intents. When your app adopts all of the protocols associated with call handling, you can adopt this one protocol instead of adopting the [`INStartAudioCallIntentHandling`](/documentation/Intents/INStartAudioCallIntentHandling), [`INStartVideoCallIntentHandling`](/documentation/Intents/INStartVideoCallIntentHandling), and [`INSearchCallHistoryIntentHandling`](/documentation/Intents/INSearchCallHistoryIntentHandling) protocols separately.

An object that adopts this protocol must be able to respond to the following intents:

- [`INSearchCallHistoryIntent`](/documentation/Intents/INSearchCallHistoryIntent), a request to search for an entry in the app’s call logs.
- [`INStartAudioCallIntent`](/documentation/Intents/INStartAudioCallIntent), a request to start an audio-only call.
- [`INStartVideoCallIntent`](/documentation/Intents/INStartVideoCallIntent),  a request to start a video call.

Your handler object must be prepared to resolve any parameters associated with these intents and to confirm and handle the requests. When confirming and handling a request, you provide the response object that matches the specified intent.

---

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