---
title: NSURLRequest.NetworkServiceType.callSignaling
framework: foundation
role: symbol
role_heading: Case
path: foundation/nsurlrequest/networkservicetype-swift.enum/callsignaling
---

# NSURLRequest.NetworkServiceType.callSignaling

A service for low-loss tolerant, inelastic flow, jitter tolerant, short but bursty rate, and variable size connections.

## Declaration

```swift
case callSignaling
```

## Discussion

Discussion Use this for establishing, maintaining, and tearing down a VoIP call.

## See Also

### Network service types

- [NSURLRequest.NetworkServiceType.default](foundation/nsurlrequest/networkservicetype-swift.enum/default.md)
- [NSURLRequest.NetworkServiceType.video](foundation/nsurlrequest/networkservicetype-swift.enum/video.md)
- [NSURLRequest.NetworkServiceType.background](foundation/nsurlrequest/networkservicetype-swift.enum/background.md)
- [NSURLRequest.NetworkServiceType.voice](foundation/nsurlrequest/networkservicetype-swift.enum/voice.md)
- [NSURLRequest.NetworkServiceType.responsiveData](foundation/nsurlrequest/networkservicetype-swift.enum/responsivedata.md)
- [NSURLRequest.NetworkServiceType.avStreaming](foundation/nsurlrequest/networkservicetype-swift.enum/avstreaming.md)
- [NSURLRequest.NetworkServiceType.responsiveAV](foundation/nsurlrequest/networkservicetype-swift.enum/responsiveav.md)
- [NSURLRequest.NetworkServiceType.voip](foundation/nsurlrequest/networkservicetype-swift.enum/voip.md)