The Call class is used to manage the call state and call actions. It is used to accept, decline, end, mute, hold, and send DTMF tones during a call.

In order to accept a call, we simply retrieve the instance of the call and use the .acceptCall(callID) method:

    _telnyxClient.call.acceptCall(_incomingInvite?.callID);

In order to end a call, we can get a stored instance of Call and call the .endCall(callID) method. To decline an incoming call we first create the call with the .createCall() method and then call the .endCall(callID) method:

    if (_ongoingCall) {
      _telnyxClient.call.endCall(_telnyxClient.call.callId);
    } else {
      _telnyxClient.createCall().endCall(_incomingInvite?.callID);
    }

In order to send a DTMF message while on a call you can call the .dtmf(callID, tone), method where tone is a String value of the character you would like pressed:

    _telnyxClient.call.dtmf(_telnyxClient.call.callId, tone);

To mute a call, you can simply call the .onMuteUnmutePressed() method:

    _telnyxClient.call.onMuteUnmutePressed();

To toggle loud speaker, you can simply call .enableSpeakerPhone(bool):

    _telnyxClient.call.enableSpeakerPhone(true);

To put a call on hold, you can simply call the .onHoldUnholdPressed() method:

    _telnyxClient.call.onHoldUnholdPressed();