2-Way Audio Microphone Issue
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# Bug Report

### Describe the Bug

So when I press on the microphone to enable two way audio, I can hear the sound of my voice come through the iPhone running IOS 13. But it doesn’t come through the stuck up cam. When I use the ring app it works as it should.  

### To Reproduce
Steps to reproduce the behavior:
 - Start Homebridge
 - Attempt to talk through a stick up battery camera. 
 - See error

### Expected behavior
<!-- ✍️edit: --> I expected to hear my voice come out of the ring camera, not out of my iPhone.


### Screenshots/Logs
<!-- ✍️edit: --> If applicable, add screenshots and log output to help explain your problem.

### Additional context
<!-- ✍️edit: --> Add any other context about the problem here.

### Homebridge Ring Config
Post homebridge-ring platform config  _without sensitive information_
```

{
    "bridge": {
        "name": "Homebridge xxx",
        "username": "xxx",
        "port": xxx,
        "pin": "xxx"
    },
    "accessories": [],
    "platforms": [
        {
            "name": "Config",
            "port": xxx,
            "auth": "form",
            "theme": "dark-mode",
            "tempUnits": "c",
            "lang": "auto",
            "platform": "config"
        },
        {
            "refreshToken": "xxx",
            "hideDoorbellSwitch": true,
            "hideInHomeDoorbellSwitch": true,
            "hideAlarmSirenSwitch": true,
            "cameraStatusPollingSeconds": 1,
            "cameraDingsPollingSeconds": 1,
            "platform": "Ring"
        }
    ]
}

```

### Environment
<!-- ✍️edit: -->
 - OS: Raspbian GNU/Linux Buster (10)
 - Node.js: v12.18.0
 - NPM: v6.14.5
 - homebridge-ring: 9.3.3
 - homebridge: 1.1.1
 - hoobs: N/A
