Modern Paging with RAD


Allowing users to bring their existing paging system into the modern realm of VoIP/SIP and mobile telecom applications is the RAD-1A remote access device. It is a ring-trip paging device that will answer an incoming phone call and convert that audio into a 600 Ohm output compatible with most paging amplifiers in use today. An optional security code prevents misdials or unauthorized access of your paging system.


A multitude of analog phone line emulators are compatible with the RAD-1A. Cellular-to-analog adapters may be used, or use an FXS port on an ATA to connect hosted and on-premise VoIP/SIP phone systems. CO lines and analog PABX extensions can also be used.


Once a user connects with the RAD-1A, on-board relay contacts can activate the attached paging amplifiers. After the page, the RAD-1A will disconnect on CPC, busy signal, or return to dial tone. User-programmable silence time-out or call-length time out will also trigger a disconnect once the timer has expired.


  • Power: Telephone Line Powered (24VDC / 20mA)
  • Dimensions: 5.25 x 3.5 x 1.75 in. (133mm x 89mm x 44mm)
  • Shipping Weight: 0.9 lb. (0.41 kg)
  • Operating Temperature: 32° to 90°F (0° 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



  • Status LED turns on when the unit is active and brightens to indicate the presence of audio
  • Programmable 6 digit security code
  • Programmable 6 digit access code
  • Separate 600 Ohm audio and telephone line outputs
  • Disconnects on CPC, call time out, silence time out, busy or by dialing #7
  • Programmable 2 hour call timer
  • Programmable 1-99 second silence timer
  • Alternate screw terminal connection for phone line out
  • Connects phone line to the 600 Ohm input / output of one-way paging amplifiers, digital announcers and other audio programs
  • Relay contacts available for systems that need a dry contact closure (activate whenever the unit’s output is active)
  • Non-volatile memory, no batteries required

1 User Review

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Anonymous, Engineering, R&D, Design & Technical Management
i liked it's broad application in varied field