TR-1 - Viking Electronics

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Prevent Telephone Line Abuse with a Programmable Toll Restrictor

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Product Details

The TR-1 is a cost effective, user programmable Toll Restrictor, ideal for applications where unauthorized phone calls cannot be tolerated.

Concealed in a standard wall mount RJ11C jack, the TR-1 is designed to allow or restrict local and/or specified long distance numbers. The TR-1 provides a 40-number allow/restrict table, a 6-digit bypass code (allows authorized users unrestricted access), and an inbound/outbound call timer with disconnect.


  • Courtesy phones in banks, hotels, etc.
  • Prevent outgoing calls on public phones, etc.
  • Limit call times
  • Force long distance calls through alternate long distance carriers
  • Prevent the use of hand held dialers



  • Phone line powered
  • Non-volatile E2 memory
  • Compatible with Touch Tone or rotary phones
  • .5 to 49.5 minute call timer with disconnect
  • Programmable allow or restrict table stores up to forty 12-digit phone numbers, prefixes or area codes
  • 6-digit bypass code for unrestricted access
  • Programmable to ignore phone system line access numbers
  • Programmable ignore table stores up to twelve 12-digit phone numbers, ideal for ✱67, ✱69, etc.
  • Programmable maximum digit string length
  • Concealed in a standard RJ11C jack
  • Allow or restrict 1-800 numbers
  • Operational alert tones
  • Will not restrict dialing on inbound calls
  • Allows emergency and toll free numbers


  • Power: Phone line powered (24V DC @ 20 mA minimum)
  • Dimensions: 70mm x 57mm x 22mm (2.75” x 2.25” x .88”)
  • Shipping Weight: .45 kg (1 lb)
  • Environmental: 0° C to 32° C (32° F to 90° F) with 5% to 95% non-condensing humidity
  • Connections: Phone- (1) RJ11 jack, Line- (2) screw terminals