new MJ has reversed polarity

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Popgory
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new MJ has reversed polarity

Post by Popgory »

Hi All,

Went live with mJ in early April. Usual learning curve, now have good service 95% of the time.

Today, out of the blue, I put a Line Tester in the RJ-11 on the mJ device. Low and behold, it came up RED - reversed polarity. I know the tester is good as I had the lineman check it against his equipment many years ago.

I am requesting the other members of the forum with line testers to check their mJs and post. Mine is 45 days old. I am wondering if anybody else has a mJ that comes up as reversed polarity?

Thanks in advance for your help and posts.
Popgory
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Matt9876
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Post by Matt9876 »

If it is truly backwards most phones will not produce touch tones on a reverse line.
netstat
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Post by netstat »

Matt9876 wrote:If it is truly backwards most phones will not produce touch tones on a reverse line.
rofl, where did you get that information? I have never worried about polarity on any wall jacks I have ever installed and not once have I ever had a phone not produce DTMF tones. Somehow I really don't think I just happened to get the polarity "right" on all of them.
VaHam
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Telephone Line Polarity

Post by VaHam »

When ringing a telephone line uses AC and is thus not polarity sensitive. When talking or not in use the telephone line is DC and the tip or green wire is positive. The Ring or red wire is negative.

This used to be important in older phones and they would not perform an out going touchtone call if the polarity was reversed even though they could answer and incoming one.

Most modern phones have a circuit which corrects the polarity inside the phone if it is wired incorrectly; so the newer phones will work even when wired wrong.
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mufon
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Post by mufon »

I just plugged mine into the usb port upside-down, problem solved. Funny thing, however is that people's voices sound just like a record being played backwards.
"Looking for a new job. I have worked for Adelphia, Enron, Health South, Worldcom, and most recently British Petroleum."
but2002
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Post by but2002 »

mufon wrote:I just plugged mine into the usb port upside-down, problem solved. Funny thing, however is that people's voices sound just like a record being played backwards.
I call BS on this one
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anonyjack
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Post by anonyjack »

but2002 wrote:I call BS on this one
I agree with the BS Flag. If you can backward/reverse plug in your magicjack to a usb, Id say you have a bigger problem with your computer hardware than your magicjack.

Cheers.
VaHam
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Post by VaHam »

mufon wrote:I just plugged mine into the usb port upside-down, problem solved. Funny thing, however is that people's voices sound just like a record being played backwards.
I want some of what your smoking :roll:
Sad Times Ahead for this Obamanation !!!! Psalms 109:8
Crusty
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Post by Crusty »

Maybe he was pulling your leg and you didn't recognize it as a humorous post.
stephen88
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Post by stephen88 »

mufon wrote:I just plugged mine into the usb port upside-down, problem solved. Funny thing, however is that people's voices sound just like a record being played backwards.
I did the same thing but then ran the MJ input/output channels through a reverse mixer to correct the funny voices.

Now MJ pays ME $19.95 a year....
Sparki
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Post by Sparki »

I discovered the same thing awhile ago when heating up the house phone wiring with MJ. I was obsessed about keeping the polarity right just for the fun of it. I noticed that my MJ was reversed polarity at its output jack. Not a problem really because ALL of those short modular phone jumper cables, the flat silver ones, are all wired as REVERSERS. So coming off of the MJ with a flat silver modular cable to plug it into the properly wired house wiring reversed the reversed MJ and made it true. Yay. But then there were all those darned silver reversing modular jumpers coming off of the telco jacks leading to the actual phone units that caused it to all reverse again! WHY DO THEY DO THAT? I have yet to grok the zen behind making all modular jumpers reverse. There must be something like a rule that says "wire your house wiring backwards because all the modular jumpers will reverse it back true" ha right. I just got out the bag of RJ11 connectors and the crimper and fixed some modular cords. In the end none of it made any difference probably :)
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