- 15W of paging power- Drive up to 15 8-ohm speakers- 600-ohm output to drive additional amplifiers- Select: FXO (loop start), FXS (ring trip), or paging port (VOX relay) interface mode- Independent volume controls for Paging, Ringing Tones, and Background Music- 36V DC talk battery for interfacing with FXO or unused phone system line input/trunk port- Compatible with 24V to 48V FXS (ring trip) analog station operation- 800Hz pre-announce page tone (on/off)- Provides Night Bell warble tone via contact clo