---
title: CTSlicingManager.TrafficClass.voice
framework: coretelephony
role: symbol
role_heading: Case
path: coretelephony/ctslicingmanager/trafficclass/voice
---

# CTSlicingManager.TrafficClass.voice

A traffic class for voice communication with highest priority and lowest latency.

## Declaration

```swift
case voice
```

## Discussion

Discussion The voice traffic class provides the highest priority and lowest latency for real-time voice communication, such as phone calls and VoIP.

## See Also

### Traffic classes

- [CTSlicingManager.TrafficClass.any](coretelephony/ctslicingmanager/trafficclass/any.md)
- [CTSlicingManager.TrafficClass.background](coretelephony/ctslicingmanager/trafficclass/background.md)
- [CTSlicingManager.TrafficClass.responsiveData](coretelephony/ctslicingmanager/trafficclass/responsivedata.md)
- [CTSlicingManager.TrafficClass.avStreaming](coretelephony/ctslicingmanager/trafficclass/avstreaming.md)
- [CTSlicingManager.TrafficClass.responsiveAV](coretelephony/ctslicingmanager/trafficclass/responsiveav.md)
- [CTSlicingManager.TrafficClass.video](coretelephony/ctslicingmanager/trafficclass/video.md)
- [CTSlicingManager.TrafficClass.signaling](coretelephony/ctslicingmanager/trafficclass/signaling.md)