---
title: PTTransmissionMode.halfDuplex
framework: pushtotalk
role: symbol
role_heading: Case
path: pushtotalk/pttransmissionmode/halfduplex
---

# PTTransmissionMode.halfDuplex

A type that indicates a participant can’t simultaneously receive and transmit audio.

## Declaration

```swift
case halfDuplex
```

## Mentioned in

Creating a Push to Talk app

## See Also

### Modes

- [PTTransmissionMode.fullDuplex](pushtotalk/pttransmissionmode/fullduplex.md)
- [PTTransmissionMode.listenOnly](pushtotalk/pttransmissionmode/listenonly.md)