An FXO Gateway acts as a vital bridge between traditional PSTN lines and modern IP-based communication systems. It enables businesses and service providers to connect analog telephone lines directly to IP PBX or VoIP networks, ensuring smooth call routing and reliable voice quality. Ideal for organizations transitioning from legacy telephony to VoIP, FXO Gateways help reduce call costs, improve call management, and maintain continuity with existing infrastructure while supporting scalable and efficient communication.