How to wire an RJ type phone jack.

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Uploaded by on May 6, 2010

Rich shows how to wire an RJ type phone jack.

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Howto & Style

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  • Keep in mind. If you get caught doing this it's a $12,000 fine. Is it illegal to do this yourself

  • @mba2ceo we normally have a typical idle voltage of -46VDC to -52VDC, when your set goes off hook/when you pick up the phone, we go down to a carrier voltage of -6VDC to -10VDC.

    I believe Voip, or cable based phone systems use -20VDC idle, and KSU/PBX systems will read the same as a typical line, on the CO side, but on the set side i believe there is no visible idle voltage as its all a digital signal. (tho I would need to check on that to be 100% sure)

  • Thank You! I pulled the RJ jack from the wall and you saved me a call to the cable company! <3

  • If the voltage difference is ~50V where does the 9V premiss come from ?

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