If you’re setting up or expanding a VoIP phone system, you’re likely to encounter the terms FXS and FXO. They refer to two types of analog telephony interface ports, and understanding the difference between them is more than a technical detail. The relationship between FXS and FXO ports determines how your phones connect to your […]

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.