Yeastar O2 Module 2FXO

O2 Module 2FXO Compatible with MyPBX series and Asterisk card
The O2 is a module with 2 FXO ports to terminate two analog PSTN(POTS) lines

Yeastar O2 Module – 2 FXO Ports

General

• Module type: FXO (Foreign Exchange Office) module

• Number of FXO ports: 2

• Connector type: 2 × RJ11 FXO ports

Telephony / Line Termination

• Designed to terminate two analog PSTN (POTS) lines — allows connecting standard land‑lines to a VoIP PBX

• Enables analog PSTN lines integration into Yeastar IP‑PBX systems

Signalling & Detection

• Ring frequency detection: 15–50 Hz

• Ring voltage detection: 30+ VRMS (depending on FXO mode)

• Supports echo cancellation for improved voice quality

Signaling Modes / Functionality

• Supports multiple signaling modes including:

  • Foreign Exchange Office (for two‑way connection to a PBX or key system trunk)

  • Foreign Exchange Station (for connection to a carrier or public network)

  • PLAR (Private Line Automatic Ringdown) — point‑to‑point unswitched connections

Compatibility & Use Case

• Compatible with Yeastar S‑Series and many P‑Series (or legacy MyPBX) PBX systems (depending on slot/expansion availability)

• Useful for businesses that need to connect traditional PSTN lines along with VoIP, or as backup / PSTN failover when Internet/VoIP is down