Telephone Access Module PRS2403 needed. - Loop start, ground start, and station port (90V ring up) compatibility - 600-ohm output - Pre-announce and confirmation tones (defeatable) - Adjustable tone volume - Works with paging only and two-way (talk back) systems - Background music input with volume control - Suppresses background music during paging - Station access disconnect is dynamically controlled using a combination disconnect timer, and VOX disconnect timer or Calling Party Control (CPC) signal detection - Station port maximum page times from 1- 200 seconds - Disconnect VOX timer is adjustable from 1 to 11 seconds of silence - VOX and default timers independently inhibitable - Calling Party Control (CPC) signal from switch immediately disconnects station port - 24V Talk Battery - 1 Rack space unit height - Flexible Mounting Configuration: wall, single unit rack, and dual side-by-side rack mount - Easily accessible controls and switches - Trunk Timer feature helps prevent system blockage - 24V power supply required for all modes of operation (150mA min. capacity) - 1 C-Form (N.O. and N.C.) contact pair available for operating external equipment - Pluggable terminal strip connectors - FCC Part 68 registered, ETL Listed BGTAMB2