how can I turn on only audio without camera ?

[tsolutionsx]

How are you support team ?

now I am going to make the meeting screen as like google.

          {isCamera && (
            <Webcam
              ref={webcamRef}
              audio={isAudio}
              screenshotFormat='image/jpeg'
              videoConstraints={videoConstraints}
              onUserMedia={onUserMedia}
              className='w-full h-full object-cover'
            />
          )}

in this case, how can I enable only audio ? as you know, user can disable camera, then because isCamere will be false, component don't showing. but I want audio is possible even if user disable camera. how can I do ? please help me.