Yeastar VoIP PBX Modules Prices

Yeastar PBX Modules such FXS, FXO & GSM are designed to expand the capabilities of Yeastar S-Series and P-Series PBX systems, adding physical ports for analog phones and external lines.

• S2 Module – Adds 2 FXS ports for analog telephones.
• O2 Module – Adds 2 FXO ports for PSTN lines.
• SO Module – 1 FXS + 1 FXO port, with PSTN fallback for reliability.
• GSM Module – 1 GSM channel for cellular voice calls.

Compatibility

• Small PBXs (S20, P520) – 2 onboard module slots.
• Mid-sized PBXs (S50, S412, P550) – 4 onboard module slots.
• Larger PBXs (S100, S300, P560, P570) – Expansion boards required. Example: S300 supports up to 3 expansion boards + 2 D30 DSP modules.