Line-Bug 4 Phone/ LAN Tester

 

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What's special about this network testing tool?

  • Tests standard telephone jacks and LAN jacks for the connection to telephone system
  • Protects your expensive LAN tester! Checks LAN lines (RJ-45) wired to 568 A/B standard for damaging telephone line current
  • Has both RJ-11 and RJ-45 style plugs
  • 4 tri-color (Red, Green, Amber) LEDs indicate current, polarity and ringing/ AC voltage on each line
  • Read more about this tester
  • Click for More Features

The Line-Bug 4 is a great phone/ LAN line tester. It is so small you can fit it in your shirt pocket!

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PART # DESCRIPTION COLOR PRICE
TR-9615 Line Bug Phone/LAN Tester Red
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  • Tests single line, 2 line, 3 line or 4 line jacks to USOC (telephone) standard
  • Tests LAN jack (RJ-45) wired to 568 A/B standard for telephone line current
  • RJ-45 test plug is selectable via front panel switch for USOC (telephone) or 568 (LAN) connection
  • Compact design - fits in shirt pocket
  • Economical and convenient
  • 1 year limited manufacturer warranty

 

Package Dimensions 13" x 10-1/4" x 3-1/2"
Product Dimensions 6" x 1" x 0.5"
Package Weight 1 lb
Product Weight 3 oz
Warranty 1 year
Plugs RJ11 & RJ45
Tests Current
Polarity
AC Voltage
Phone Line Results GREEN - Line OK
RED - Reversed Line
AMBER - Ringing / AC Voltage
NOT LIT - Dead Line

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REVIEW SNAPSHOT®

by PowerReviews
LINE-BUG4 PHONE- LAN TESTER
 
4.5

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Compact (3)
  • Reliable (3)
  • Versatile (3)

Cons

    Best Uses

    • High-end equipment (3)
    • Small offices (3)
      • Reviewer Profile:
      • Power user (3)
      • Was this a gift?:
      • No (3)

    Reviewed by 6 customers

    Sort by

    Displaying reviews 1-6

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    5.0

    I just got what I expected

    By multiblue

    from Holland MI

    About Me Power User

    Verified Buyer

    Pros

    • Consistent Performance
    • Versatile

    Cons

    • None

    Best Uses

    • High-End Equipment

    Comments about LINE-BUG4 PHONE- LAN TESTER:

    Business

    • Primary use:
    • Business
    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)

     
    5.0

    Great design

    By gergneslo

    from San Antonio, TX

    About Me Power User

    Verified Buyer

    Pros

    • Consistent Performance
    • Good Length
    • Good Warranty
    • Rugged
    • Versatile

    Cons

      Best Uses

      • High-End Equipment
      • Home Theater

      Comments about LINE-BUG4 PHONE- LAN TESTER:

      As good as a Montana Mile.

      • Primary use:
      • Personal
      • Was this a gift?:
      • No
       
      4.0

      Well-Designed and very practical

      By Gerg

      from San Antonio, TX

      About Me Power User

      Verified Buyer

      Pros

      • Consistent Performance
      • Good Length
      • Good Warranty
      • Rugged
      • Versatile

      Cons

        Best Uses

        • High-End Equipment

        Comments about LINE-BUG4 PHONE- LAN TESTER:

        Like the design and the combination of phone polarity tester and NIC off-voltage tester

        • Primary use:
        • Personal
        • Was this a gift?:
        • No
         
        4.0

        good product

        By crisco

        from york,pa.

        About Me High bandwidth user

        Verified Buyer

        Pros

        • Compact
        • Easy To Set Up

        Cons

          Best Uses

          • Home Networks
          • Small Offices

          Comments about LINE-BUG4 PHONE- LAN TESTER:

          used for troubleshooting atm networks and phone connections

          • Primary use:
          • Business
           
          5.0

          Great Product,Even Greater Price!

          By Chuck the repair guy

          from Vermont

          Verified Buyer

          Pros

          • Cheap Protection
          • Compact

          Cons

          • Nothing to Add

          Best Uses

          • Highly Secure Networks
          • Small Offices

          Comments about LINE-BUG4 PHONE- LAN TESTER:

          This is a cheap and easy tester to do an easy diagnostic on any system. You cant beat the price and use this first to protect your expensive tester.

          (2 of 3 customers found this review helpful)

           
          4.0

          Nifty little pre-tester

          By Booster

          from Fort Lauderdale

          Staff Reviewer

          Pros

          • Compact

          Cons

          • difficult to understand

          Best Uses

          • Highly Secure Networks
          • Small Offices

          Comments about LINE-BUG4 PHONE- LAN TESTER:

          When a couple of these units crossed my desk i had to stop a moment to really understand what they are for. The Line-Bug is not a tester to let you know your network or phone lines are running correctly, it is more a safeguard device to pre-test a line before using a more expensive high value tester. The Line-Bug simply tests for an electrical current. Telephone lines should have some current and it lights up denoting that. If it lights up when testing ethernet it has too much current and could damage expensive testers.

          Displaying reviews 1-6

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          A Basic Overview of the Line-Bug 4

           

          General Description

          The Triplett Line-Bug 4 is intended to test for the presence and polarity of telephone current on circuits terminated in an RJ-11 or RJ-45 connector.

          The Connectors

          • An RJ-11 is the common connector used for telephone, often called a 'modular' jack or plug.
          • An RJ-45 is a jack, originally used for telephone, but now commonly used for LAN systems.
          • The Line-Bug 4 has both an RJ-11 and an RJ-45 plug, allowing it to plug into either type of jack.

          The Switch

          Since the RJ-45 has been used for both telephone and LAN connections, the switch on the front of the Line-Bug 4 allows the user to select which type of connection will be tested. Setting the switch to 'USOC' configures the RJ-45 plug on the Line-Bug 4 to test per the telephone wiring standard. Setting the switch to '568 A/B' configures the RJ-45 plug on the Line-Bug 4 to test per the LAN wiring standard. The setting of the switch has no effect on the RJ-11 plug.

          The Indicator Lights

          Line-Bug 4

          The indicator lights show the presence and polarity of the circuit that the Line-Bug 4 is plugged in to. If any light turns on, a telephone circuit is present on the wires corresponding to the illuminated light.

          An RJ-11 circuit can have as many as 3 circuits present.. so 1, 2, or 3 lights may come on with a "good" circuit, with each illuminated light indicating the presence of a telephone line. If the lights are Green, the polarity is normal. If the lights are Red, the polarity is reversed. Often, telephone circuitry will work OK with reversed polarity, so, in general, a Red light is not a reason for concern. If no lights come on when the RJ-11 plug is connected to a mating jack, the jack is either disconnected from telephone service, or it is wired differently than a standard telephone jack.

          An RJ-45 circuit can contain as many as 4 telephone lines... so 1, 2, 3, or 4 lights may come on. As before, if the lights are Green, the polarity is normal. If the lights are Red, the polarity is reversed. If no lights come on when the RJ-45 plug is connected to a mating jack, move the switch to its opposite position and see if any lights come on. If lights do not come on in either position, the jack is either disconnected from telephone service, or it is wired differently than 568 A/B or USOC.

          Telephone lines cause a telephone to ring by rapidly reversing the polarity of the telephone current. This causes the light on the Line-Bug 4 to rapidly change color from Green to Red. and it looks Amber. When a pulsating Amber light is seen, the phone line is ringing. Care should be exercised when testing a ringing telephone line. In addition to reversing the current, the voltage is also boosted. A ringing telephone line can deliver a pretty good electrical shock. so be careful.

          LAN Systems and Telephone Lines

          The RJ-45 connector used for the typical 10MHz or 100MHz LAN system only uses 4 of the 8 wires in the connector. In some localities, the 4 unused LAN wires are being used for telephone circuits. That means an RJ-45 jack can have a LAN connection and 2 telephone lines all on the same jack. The jack can provide LAN service, telephone service, or both.

          Many LAN Test Sets were not designed to be connected to telephone lines. An unprotected Test Set can be damaged by inadvertent connection to a telephone line. The Line-Bug 4 gives the LAN Test person an inexpensive way to determine if telephone current is present on an RJ-45 connection, before plugging his expensive LAN Test Set in.

          How to Use

          Using the Line-Bug 4 is very simple.

          • Plug it into the circuit to be tested. Use the plug (RJ-11, the 'small' plug. or RJ-45, the 'big' plug) that fits the circuit to be tested.
          • Observe the lights. If testing an RJ-45 connection, move the switch to both positions and observe the lights. A light will light for each telephone circuit present. Interpret their meaning:
            • No Light: Dead Circuit (As far as telephone is concerned. It may be a live LAN connection)
            • Green Light: A telephone line is present in the correct polarity
            • Red Light: A telephone line is present in reversed polarity
            • Amber Light: A ringing telephone line is present

          Frequently Asked Questions

          Q: Does the Line-Bug 4 tell me if a LAN jack is connected to a LAN system?
          A: No. The Line-Bug 4 only tests for telephone current. It does not test for the presence of a LAN signal.

          Q: Does the Line-Bug 4 tell me if the line is a 'digital' phone line.
          A: No. The Line-Bug 4 will often light up on a digital phone line, as is not damaged by the digital line, but nothing gives an indication to the user that the line is digital.

           

          *Note: Products designed to work on analog telephone lines are often damaged when plugged into digital phone lines. Digital phone lines are seen most often in hotels and businesses.

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