I am making a kiosk app running on an iPad (iOS 12) that makes a video call with a simple one-button operation.
The app is able to make a video call to another Rainbow agent on a Windows PC, an iphone and an android device. However the app does not play an audio file (mp3) that I set to appSoundOutgoingCall of rtcService.
I set this, rtcService.appSoundHangup = "tone_ringback_1.mp3" right before callingrtcService.beginNewOutgoingCall().
Am I missing something?
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