When it comes to saving money for small businesses, VoIP is one IT tool that is all the rage. For many organizations, it can cut phone expenses in half. So obviously the benefit of a VoIP system can be enormous. But is there a catch? With some VoIP providers, there certainly is.

Voice over Internet Protocol (VoIP) systems are designed to provide a reliable and cost-effective telecommunication environment for businesses. If you’re looking to deploy a VoIP telephony system for your company, you’ll probably come across the acronyms FXS and FXO from time to time.