Universal Paging Interface (Model PI-1)

The PI-1 provides a 600 ohm output and will interface with a standard paging port or with an unused telephone line port when no paging port is provided. The PI-1 also provides voice activated (VOX) or AC ring activated contacts for muting background music during paging or night bell.
Interface your Existing Public Address System with Nearly any Phone System!
Now you can integrate any phone system with your public address or distributed amplifier audio system. Viking’s Universal Telecom/Paging Interface allows you to provide paging from any phone (or selected phones) instead of from a microphone. You can also provide background music and electronic night bell over the audio system.

The PI-1 has a built-in voice activated (VOX) or AC ring activated relay which provides D.P.D.T. contacts for muting the background music during paging or electronic night bell. These contacts are necessary when interfacing with systems such as Panasonic, SW Bell, Intertel, etc., which do not provide a paging contact closure

In the event a paging port is not available, the PI-1 can provide talk battery to allow connection of the public address system to an unused trunk input on the phone system.

The electronic night bell feature is activated by a standard ringing C.O. line, analog PABX/KSU station circuit or by a common audible contact closure provided by the phone system.

  • Integrate your public address system with any phone system
  • Cut out background music during paging
  • Electronic night bell from ringing line or contact closure
  • Floating 600 ohm output
  • Selectable 12V DC talk battery for interfacing with C.O. ports
  • Paging port interface
  • Ringing analog line input for night bell
  • Contact closure input for night bell
  • Normally open and normally closed VOX activated contacts for cutting out background music
  • Adjustable VOX contact time-out
  • Adjustable ring volume
  • 1 year warranty
  • Made in the USA
  • Power: 120V AC/12V DC 500mA, UL listed adapter provided
  • Dimensions: 133mm x 89mm x 44mm (5.25" x 3.5" x 1.75")
  • Shipping Weight: .45 kg (1 lb.)
  • Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-condensing humidity
  • Relay Contacts: 30V DC@1A, 110V DC@0.3A, 125V AC @0.5
  • Maximum Ring Output: 400mV AC RMS (no load, 150mV AC RMS@600 ohms)
  • VOX Minimum Audio Signal to Activate Relay: 50mV AC RMS@1K Hz
  • Talk Battery: 12V DC