---
title: supportsDTMF
framework: callkit
role: symbol
role_heading: Instance Property
path: callkit/cxcallupdate/supportsdtmf
---

# supportsDTMF

A Boolean value that indicates whether the call can send DTMF (dual tone multifrequency) tones via hard pause digits or in-call keypad entries.

## Declaration

```swift
var supportsDTMF: Bool { get set }
```

## See Also

### Accessing Call Update Attributes

- [localizedCallerName](callkit/cxcallupdate/localizedcallername.md)
- [remoteHandle](callkit/cxcallupdate/remotehandle.md)
- [hasVideo](callkit/cxcallupdate/hasvideo.md)
- [supportsGrouping](callkit/cxcallupdate/supportsgrouping.md)
- [supportsUngrouping](callkit/cxcallupdate/supportsungrouping.md)
- [supportsHolding](callkit/cxcallupdate/supportsholding.md)