An FXO Gateway is a practical solution for businesses that want to connect their traditional PSTN lines to an IP-based communication system. It acts as a bridge between analog telephone lines and VoIP networks, allowing companies to make and receive calls through their existing infrastructure while benefiting from modern IP telephony features. By integrating an FXO Gateway, businesses can reduce communication costs, ensure call continuity during network issues, and smoothly transition from legacy systems to advanced IP PBX environments without replacing all their hardware at once.