# Direct Call & Group Call
**URL:** https://community.sendbird.com/t/direct-call-group-call/3291
**Category:** iOS
**Tags:** sendbird-call
**Created:** [October 27, 2021, 5:34am UTC](https://community.sendbird.com/t/direct-call-group-call/3291 "2021-10-27T05:34:28Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@MACAKM](https://community.sendbird.com/u/MACAKM)
#### Post date: [October 27, 2021, 5:34am UTC](https://community.sendbird.com/t/direct-call-group-call/3291/1 "2021-10-27T05:34:28Z")
I have a few questions while using direct calls and group calls.
- Direct Call
1. Is the function to check the communication sensitivity between the sender and the receiver supported?
- Group Call
1. Doesn’t group call support speaker mode?
2. Can I check the communication sensitivity in a group call?
---
### Author:  [@mininny](https://community.sendbird.com/u/mininny)
#### Post date: [October 27, 2021, 5:52am UTC](https://community.sendbird.com/t/direct-call-group-call/3291/2 "2021-10-27T05:52:27Z")
Hello @MACAKM , regarding your question:
Direct Call:
1. There is function to check the audio quality of the call on the dashboard. You can find it at Dashboard → Direct Calls → Call → MOS for audio
Group Call:
1. Group call supports speaker mode.
2. For now, group call does not support checking the quality of the call.
---
### Author:  [@MACAKM](https://community.sendbird.com/u/MACAKM)
#### Post date: [October 27, 2021, 6:09am UTC](https://community.sendbird.com/t/direct-call-group-call/3291/3 "2021-10-27T06:09:51Z")
Direct call
1. Can’t the app detect it?
and
I used route PickerView while looking at the Group Call sample code, but the speaker mode does not come out. But, Direct Call shows speaker mode.
I used the code below in the group call
```auto
private func setupAudioOutputButton() {
let frame = CGRect(x: 0, y: 0, width: 56, height: 56)
if let routePickerView = SendBirdCall.routePickerView(frame: frame) as? AVRoutePickerView {
routePickerView.activeTintColor = .clear
routePickerView.tintColor = .clear
self.speakerButton.addSubview(routePickerView)
}
}
```
---
### Author:  [@MACAKM](https://community.sendbird.com/u/MACAKM)
#### Post date: [October 27, 2021, 10:49am UTC](https://community.sendbird.com/t/direct-call-group-call/3291/4 "2021-10-27T10:49:00Z")
Direct call provides the following functions so you can know the audio type, but is there no corresponding function for group call? I don’t see it in the documentation
```auto
func didAudioDeviceChange(_ call: DirectCall, session: AVAudioSession, previousRoute: AVAudioSessionRouteDescription, reason: AVAudioSession.RouteChangeReason) {
guard !call.isEnded else { return }
guard let output = session.currentRoute.outputs.first else { return }
if output.portType.rawValue == "Receiver" {
speakerButton.setImage(UIImage(named: "ic_call_speaker_off"), for: .normal)
} else if output.portType.rawValue == "Speaker"{
....
} else {
....
}
print("[QuickStart] Audio Route has been changed to \(output.portType.rawValue)")
}
```
---
### Author:  [@MACAKM](https://community.sendbird.com/u/MACAKM)
#### Post date: [November 3, 2021, 2:59pm UTC](https://community.sendbird.com/t/direct-call-group-call/3291/5 "2021-11-03T14:59:59Z")
Can’t Group Called use didAudioDeviceChange function provided by Direct call delegate?
I want to change the image to match the changed audio output.
If not, can you tell me how to access it?