title: How to test the stability of internet connection for this particular scenerio
body: <p>I work for a company and we have a device that we are installing in small shops for their payment transactions. This device uses internet connection as the primary connection and in case internet goes down, it fails to 3G connection. During this time there is a downtime for few minutes</p>
  
  <p>But we are having issues, where customers are calling us and says that their site goes down repeatedly throughout the day. When we look into our logs we see that our device has indeed failed over and back a number of times from primary to 3G and back to primary. We advise them that they need to check with ISP and make sure there is no internet drops.</p>
  
  <p>Often customer say that they have consulted with ISP and they seem to say there are no issues from their end.</p>
  
  <p>The only other possible reason that I can think of as to why the device keeps falling is due to faulty cabling. Are there are other way that we can test out that the problem is to do with Internet and not our device? </p>