FXO, FXS Paging Adapter. Viking s FXI-1 universal paging interface allows you to provide paging from virtually any type of phone system instead of from a microphone. You can also provide background music and electronic night bell over the audio system. The FXI-1 provides 30V talk battery for interfacing with an FXO or unused analog line input/trunk port. With the flip of a switch, the unit can connect to a FXS or PABX station ring trip port. No power supply is required in this mode. In the event that it must be connected to a dry 600 ohm paging port, the built-in voice activation (VOX) is in control. This configuration is useful when interfacing with systems that do not provide a paging contact closure, such as Panasonic, South Western Bell, Intertel, etc. In all modes the FXI-1 provides normally open or normally closed relay contacts to activate the central paging amplifier equipment or connect to an external background music source. After paging, the FXI-1 auto disconnects on CPC, busy signal, silence or default disconnect timer. An electronic night bell over paging feature can be activated from a momentary phone system contact closure (FXO and page port mode only). Applications Integrate your paging system with virtually any POTS, Centrex, Digital or IP phone system Suppress background music during paging Provides contact closure to activate paging system if not provided by the phone system Add pre-announce tone to your paging system Features Select: FXO (loop start), FXS (ring trip) or paging port (VOX relay) interface mode No power supply required in FXS interface mode Up to 6 units can be powered from one adapter in the FXO or VOX mode 30V DC talk battery for interfacing with FXO or unused phone system line input/trunk port Floating 600 ohm paging output with volume control Normally open or closed relay for external paging amp activation or interfacing the paging amp with an external background music source 800 Hz pre-announce page tone (on/off) Compatible with 24 to 48 volt FXS operation Calling party control (CPC) detection for immediate disconnect Busy signal detect disconnect 2.5 to 5 second VOX silence disconnect timer Programmable VOX trigger sensitivity 16 or 36 second default disconnect timer Screw terminal block connections Wall mount housing: (2) #6x3/4 panhead screws included.