Connect your telephone system's paging output to an external PA amplifier without expensive interface cards or proprietary equipment — the Viking FXI-1A is a universal paging interface that bridges FXO, FXS, and VOX paging ports to standard PA amplifier inputs with floating 600-ohm output and a relay for amplifier activation. Select from three interface modes: FXO (loop start) for connection to standard CO lines or trunk ports, FXS (ring trip) for connection to analog phone system station ports, or VOX relay for push-to-talk paging systems. In FXS mode no external power supply is required; in FXO or VOX modes up to 6 units can share one power adapter. A floating 600-ohm paging output with volume control feeds the PA amplifier cleanly, and a normally open or closed relay handles external PA amplifier activation or muting. Compact enough to install in the wiring closet alongside the phone system. Our Expert Take: The FXI-1A solves a common integration problem: getting clean paging audio from a phone system into a legacy or third-party PA amplifier. It's particularly useful when moving to a new PBX that uses an FXO paging port where the old system used FXS — the selectable interface mode means you don't need to rewire the PA system. Key Features Selectable interface mode: FXO (loop start), FXS (ring trip), or VOX relay (push-to-talk) No power supply required in FXS mode Up to 6 units from one adapter in FXO or VOX mode 30V DC talk battery for FXO/unused phone system port interfacing Floating 600-ohm paging output with volume control Normally open or closed relay for PA amplifier activation or muting Universal — works with most phone systems and PA amplifiers Technical Specifications Interface Modes: FXO, FXS, VOX relay Output Impedance: 600 ohm floating Relay: Normally open or closed (programmable) Talk Battery: 30V DC (FXO/VOX modes) Power: Not required in FXS mode; shared adapter for FXO/VOX
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