<!--
{
  "availability" : [
    "iOS: 10.0.0 -",
    "iPadOS: 10.0.0 -",
    "macCatalyst: 10.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 9.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CallKit",
  "identifier" : "/documentation/CallKit/CXSetMutedCallAction",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "CallKit"
    ],
    "preciseIdentifier" : "c:objc(cs)CXSetMutedCallAction"
  },
  "title" : "CXSetMutedCallAction"
}
-->

# CXSetMutedCallAction

An encapsulation of the act of muting or unmuting a call.

```
class CXSetMutedCallAction
```

## Overview

[`CXSetMutedCallAction`](/documentation/CallKit/CXSetMutedCallAction) is a concrete subclass of [`CXCallAction`](/documentation/CallKit/CXCallAction). When the user or the system mutes a call, the provider sends [`provider(_:perform:)`](/documentation/CallKit/CXProviderDelegate/provider(_:perform:)-4u3yu) to its delegate. The provider’s delegate calls the [`fulfill()`](/documentation/CallKit/CXAction/fulfill()) method to indicate that the action was successfully performed. When a caller mutes a call, that caller is unable to communicate with other callers until they unmute the call. A muted caller still receives communication from other unmuted callers.

## Topics

### Creating New Actions

[`-  initWithCallUUID:muted:`](/documentation/CallKit/CXSetMutedCallAction/init(call:muted:))

Initializes a new action for a call identified by a given UUID, as well as whether the call is muted.

[`-  initWithCoder:`](/documentation/CallKit/CXSetMutedCallAction/init(coder:))

Creates a new action for a call with data in an unarchiver.

### Accessing Action Attributes

[`muted`](/documentation/CallKit/CXSetMutedCallAction/isMuted)

A Boolean value that indicates whether the call is muted.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

### Inherits From

[`CXCallAction`](/documentation/CallKit/CXCallAction)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)