The Yeastar O2 Module 2 FXO is a wise choice for businesses seeking to seamlessly integrate analog telephone lines into their VoIP communication systems. By adding FXO ports to compatible Yeastar PBX systems, this module allows for efficient bridging between traditional analog telephony and modern VoIP technology. This versatility ensures that organizations can maintain existing analog phone lines while enjoying the benefits of VoIP, such as cost savings and enhanced features.