Description Yeastar S0 Module  The Yeastar S2 Module is a versatile and practical add-on designed to enhance the functionality of Yeastar S-Series IP PBX systems, including the S20, S50, S100, and S300 models. This module adds two FXS ports, allowing seamless integration of analog devices such as traditional telephones and fax machines into modern VoIP systems. Ideal for hybrid telephony environments, the S2 Module bridges the gap between legacy analog equipment and cutting-edge IP communication technology. With support for popular voice codecs like G.711, G.729A, and G.722, it ensures crystal-clear audio quality. Built-in features like echo cancellation and noise suppression further enhance voice clarity. The module is easy to install, offering a plug-and-play design that eliminates…