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O2 Module

Yeastar O2 FXO PBX module reference

Yeastar · Full reference: O2 Module

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Manufacturer reference

Manufacturer details describe the cited version. Confirm the exact unit and intended system.

Product type
2-port FXO module
Ports / interfaces
2 RJ11 FXO ports
Line use
Connects analog PSTN (POTS) lines
Datasheet-listed PBX models
S412, S20, S50, S100, S300, P550, P560, P570

Selection notes

  • O2 is an FXO module for analog lines, not the S2 FXS module for analog handsets. Confirm the exact host PBX hardware, available module slot, firmware and line requirements against current Yeastar guidance before ordering.
  • The manufacturer datasheet is a historical reference and does not confirm ISD stock, actual module revision, price, delivery date, local warranty or package contents.

Official documents

Manufacturer source checked 2026-10-07. The supplied unit and local terms require confirmation.

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