The QuadroFXO-4 is a modular approach to adding additional outside PSTN lines (POTS) to a corporate phone network that utilises an Epygi Quadro IP PBX. Each QuadroFXO-4 is a stand-alone SIP gateway device with 6 outside POTS lines. Multiple QuadroFXO-4 gateways can be added to a Quadro IP PBX depending on how many additional lines are required. Uses include the addition of inbound lines, the balancing of outbound call volumes from a combination of analogue and IP phones, fax lines, emergency lines and individual direct dial numbers for each salesperson.

FXO Extension for Quadro IP PBX
Connected via Ethernet to the LAN interface of a Quadro IP PBX, QuadroFXO-4 delivers six addional POTS lines for PSTN calls. Minimal configuration is needed, the Quadro IP PBX will automatically use the new POTS ports and present them within its management system as additional FXO lines. These lines may be co-located with the IP PBX or located remotely as an "extension cord" to another office in another city or even another country.

Mini Point of Presence (POP)
The QuadroFXO-4 can be used as a low cost, mini Point of Presence (POP). In this configuration you remove the IP PBX altogether by assigning VoIP network DID numbers from an ITSP directly to the QuadroFXO-4 lines. Think of it as a smaller scale alternative to the QuadroE1/T1 gateway. It truly is the lowest cost for creating a local presence anywhere on the globe.

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