The YEASTAR S2 is a highly versatile and reliable module designed for expanding your IPBX capabilities. As a part of the advanced IPBX modules category, this dual FXS module seamlessly integrates two analog telephones or fax machines, ensuring a robust and flexible solution for businesses seeking to extend their telecommunication systems. With its easy installation and renowned Yeastar compatibility, the YEASTAR S2 stands out as a practical upgrade for office environments that require dependable analog extensions.