Yeastar SO 1FXS+1FXO Yeastar Yeastar S-Series PBX Module

The Yeastar SO 1FXS+1FXO is an analogue expansion module designed for Yeastar S-Series IP PBX systems. It provides one FXS (Foreign Exchange Subscriber) port for connecting an analogue telephone or fax machine, and one FXO (Foreign Exchange Office) port for connecting to an analogue PSTN line or legacy PBX trunk.

This module enables hybrid telephony deployments where businesses need to integrate traditional analogue devices and lines alongside modern VoIP infrastructure. The FXS port allows users to retain existing analogue endpoints, while the FXO port provides a backup PSTN connection or enables connection to legacy telephone systems.

The SO module is intended for installation in Yeastar S-Series PBX platforms, offering a cost-effective method to expand analogue connectivity without replacing the core IP telephony system. It is particularly useful for small to medium businesses transitioning from legacy telephony or requiring PSTN failover capability.

Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.