Comparing proprietary and open-source VoIP systems

Your managed services provider may have your business communications covered, but knowing a thing or two about Voice over Internet Protocol (VoIP) will help you understand what VoIP solution best fits your business. What are your choices? Which one is better? Read on to learn more about VoIP.
What are proprietary systems?
When most companies release VoIP software, such as Microsoft Teams or Zoom, they make it almost impossible for users to view or alter the programming code.