Yeastar O2 Module — 2 FXO Ports
Overview
Looking for a Yeastar O2 module Kenya supplier? The O2 is a small expansion card, not a standalone device. It adds 2 RJ11 FXO ports to a compatible Yeastar PBX. As a result, you can connect your VoIP system directly to analog PSTN lines. Net-Top supplies and installs genuine Yeastar O2 modules in Nairobi, and we include local technical support with every installation.
Compatibility & Signaling
The O2 fits several Yeastar systems, including the S20 and S50. It also supports the S412, S100, and S300. The module handles echo cancellation, so call quality stays clear on analog lines. It also supports multiple signaling modes, including FXO, FXE, and PLAR. This means it adapts to different carrier connection types, not just one standard setup.
Why Businesses Add This Module
Many offices still rely on traditional PSTN lines from their local carrier. Rather than dropping those lines entirely, you simply add an O2 module to your PBX. This lets you keep existing analog connections, while still running a modern VoIP system. So you get the benefits of both, without ripping out working infrastructure.
Installation & Reliability
The O2 installs directly into your PBX’s module slot, so no separate box or extra wiring is needed. It detects ring voltage automatically, at 30+ VRMS, depending on the FXO mode selected. Net-Top handles the installation for you, so your analog lines stay configured correctly from day one.









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