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Telecom Paging Interface

Model: PI-1A

  • Floating 600 ohm output
  • Selectable 22V DC talk battery for interfacing with unused phone system line input / trunk ports
  • Paging port interface
  • Ringing analog line input for night bell
  • Contact closure input for night bell
  • DPDT normally open and normally closed VOX activated contacts for cutting out background music
  • Adjustable VOX contact time-out
  • Adjustable VOX trigger sensitivity
  • Adjustable ring volume
  • Adjustable ring pitch
  • Wall mount housing, (2) #6 x ¾ panhead screws included
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Product Manual

Application Note

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Product Details

Viking’s Telecom Paging Interface allows you to provide paging from nearly any phone system instead of from a microphone. You can also provide background music and electronic night bell over the audio system.

The PI-1A features a built-in voice activated (VOX) relay which provides DPDT contacts for muting background music during paging. The relay is also activated by AC ring for providing electronic night bell. These contacts are necessary when interfacing with systems such as Panasonic, South Western Bell, Intertel, etc., which do not provide a paging contact closure.

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

The electronic night bell feature is activated by a standard ringing analog PABX/KSU station circuit or by a common audible contact closure provided by an electronic key system. The ring pitch and volume are adjustable allowing you to differentiate between multiple ringing lines.

Applications

  • Integrate your public address system with nearly any phone system
  • Cut out background music during paging
  • Electronic night bell from ringing line or contact closure

Features

  • Floating 600 ohm output
  • Selectable 22V DC talk battery for interfacing with unused phone system line input / trunk ports
  • Paging port interface
  • Ringing analog line input for night bell
  • Contact closure input for night bell
  • DPDT normally open and normally closed VOX activated contacts for cutting out background music
  • Adjustable VOX contact time-out
  • Adjustable VOX trigger sensitivity
  • Adjustable ring volume
  • Adjustable ring pitch
  • Wall mount housing, (2) #6 x ¾ panhead screws included

Specifications

  • Power: 120V AC/12V DC 500mA, UL listed adapter provided
  • Dimensions: 4.38” x 2.97” x 1.38” (111mm x 76mm x 36mm)
  • Shipping Weight: 1.06 lbs (0.48 kg)
  • Environmental: 32°F to 90°F (0°C to 32°C) with 5% to 95% non-condensing humidity
  • Relay Contacts: 30V DC@1A, 110V DC@0.3A, 125V AC @ 0.5A
  • Maximum Ring Output: 0.5V AC RMS no load, 0.4V AC RMS @ 600 ohms
  • VOX Minimum Audio Signal to Activate Relay: At 1KHz with VOX sensitivity POT set to minimum: -17dbm, with POT set to maximum: -37dbm
  • VOX Time Out Delay: 0.9 second minimum and 4.3 second maximum
  • Talk Battery: 22V DC

Tones

Tone Description Preview Download
PI-1WarbleC Electronic warble N/A

Compare With Similar Items

  • Power: 120VAC / 12VDC 500mA UL listed adapter included (not required in FXS mode)
  • Dimensions: 4.38″ x 2.97″ x 1.38″ (111mm x 76mm x 36mm)
  • Shipping Weight: 1.06 lbs (.48 kg)
  • Operating Temperature: 32°F to 90°F (0°C to 32°C)
  • Humidity: 5% to 95% non-condensing
  • Relay Contacts: 1A @ 30VDC / 0.5A @ 125VAC, 250VAC maximum
  • Minimum VOX Audio Signal to Activate Relay (normal sensitivity): -28dBm minimum @ 1KHz
  • Minimum VOX Audio Signal to Activate Relay (lower sensitivity): -25dBm minimum @ 1KHz
  • VOX Time Out Disconnect: 2.5 to 10 seconds or disabled
  • Page Time Out Disconnect: 5 to 60 seconds or disabled
  • Talk Battery: 30VDC
  • Connections: (10) cage clamp screw terminals
  • Power: Telephone Line Powered (24VDC / 20mA)
  • Dimensions: 5.25″ x 3.5″ x 1.75″ (133mm x 89mm x 44mm)
  • Shipping Weight: 0.9 lbs (0.41 kg)
  • Operating Temperature: 32°F to 90°F (0°C to 32°C)
  • Humidity: 5% to 95% non-condensing
  • Relay Contact Ratings: 1A @ 30VDC / 0.5A @ 125VAC, 250VAC maximum
  • Audio Loss (through unit): 1dB
  • Connections: (2) RJ11 modular jacks, (7) cage clamp screw terminals

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