Yeastar O2 2-Port FXO Expansion Module

The Yeastar O2 module is a 2-port FXO expansion card that adds analogue PSTN trunk connectivity to compatible Yeastar S-Series IP-PBX systems, available from Procure.ae in the UAE.

The O2 module plugs into an expansion slot on a compatible Yeastar IP-PBX and adds 2 FXO (Foreign Exchange Office) ports, letting the PBX connect directly to analogue PSTN or PABX trunk lines via standard RJ11 connectors. This is the module to use when a site still relies on analogue phone lines alongside, or instead of, SIP trunks, giving the PBX a path to place and receive calls over the traditional telephone network.

It suits small and mid-sized offices across the UAE and GCC that are migrating to IP telephony gradually, keeping existing analogue lines in service during the transition, or that simply need PSTN connectivity as a backup to SIP trunking. As an internal expansion module it is fitted inside the host Yeastar PBX rather than used as a standalone device.