I remember doing this a few companies ago. Except we didn&#x27;t have a modem, we just found a phone we could send commands to. It had some user interface that would pop up after every sent message, so we rigged up a terrible little hack to press the acknowledge button every few seconds to dismiss it. It worked surprisingly well :)<p>Photo of this amazing disruptive device: <a href="https:&#x2F;&#x2F;i.imgur.com&#x2F;6MNb19R.jpg" rel="nofollow">https:&#x2F;&#x2F;i.imgur.com&#x2F;6MNb19R.jpg</a>