Variable RTCDTMFToneChangeEvent
RTCDTMFToneChangeEvent : {
prototype: RTCDTMFToneChangeEvent;
new (type: string, eventInitDict?: RTCDTMFToneChangeEventInit): RTCDTMFToneChangeEvent;
}
prototype: RTCDTMFToneChangeEvent;
new (type: string, eventInitDict?: RTCDTMFToneChangeEventInit): RTCDTMFToneChangeEvent;
}