Description
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
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Module type: FXO (Foreign Exchange Office) module
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Number of FXO ports: 2
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Connector type: 2 × RJ11 FXO ports
Telephony / Line Termination
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Designed to terminate two analog PSTN (POTS) lines — allows connecting standard land‑lines to a VoIP PBX
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Enables analog PSTN lines integration into Yeastar IP‑PBX systems
Signalling & Detection
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Ring frequency detection: 15–50 Hz
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Ring voltage detection: 30+ VRMS (depending on FXO mode)
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Supports echo cancellation for improved voice quality
Signaling Modes / Functionality
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Supports multiple signaling modes including:
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Foreign Exchange Office (for two‑way connection to a PBX or key system trunk)
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Foreign Exchange Station (for connection to a carrier or public network)
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PLAR (Private Line Automatic Ringdown) — point‑to‑point unswitched connections
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Compatibility & Use Case
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Compatible with Yeastar S‑Series and many P‑Series (or legacy MyPBX) PBX systems (depending on slot/expansion availability)
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Useful for businesses that need to connect traditional PSTN lines along with VoIP, or as backup / PSTN failover when Internet/VoIP is down
