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#11318 - 07/13/02 09:34 PM anyway i could...
Moffesto Offline
UGN Supporter

Registered: 04/22/02
Posts: 730
Loc: Kuntucky
Is there anyway i could wire up a pair of headphones to hook into a phone jack (no mic) just to listen or wire to a tape recorder <img src=" title="" src="graemlins/devil.gif" /> just for fun
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#11319 - 07/14/02 03:59 PM Re: anyway i could...
Curse Offline

Enforcement Admin

Registered: 03/04/02
Posts: 533
Loc: San Andreas
Yes, my home made beige box uses headphones... And I use it for analog recordings...
I'll try to have you some plans tonight...

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#11320 - 07/14/02 04:26 PM Re: anyway i could...
Moffesto Offline
UGN Supporter

Registered: 04/22/02
Posts: 730
Loc: Kuntucky
ok, thanks
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#11321 - 07/14/02 07:30 PM Re: anyway i could...
PychoSamX Offline
Junior Member

Registered: 07/05/02
Posts: 31
Loc: WV
You think i could get them plans to?
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#11322 - 07/14/02 07:33 PM Re: anyway i could...
Gremelin Offline

Community Owner
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Registered: 02/28/02
Posts: 7193
Loc: Portland, OR; USA
Not that hard, I had plans using a phone jack and a headset+mic that I bought from radioshack, just hook the mic to mic and speaker to speaker then you're set, then just plug a line into it, you could tweak it in many ways, add aligator clips, add a phone off of it, etc.
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#11323 - 07/14/02 08:23 PM Re: anyway i could...
Moffesto Offline
UGN Supporter

Registered: 04/22/02
Posts: 730
Loc: Kuntucky
so.... i could take a headset and clamp into to a piece of phone wire and plug it in and it would work? which wire is for mic and which is for headset?
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#11324 - 09/26/03 11:58 AM Re: anyway i could...
smartyhands Offline
Junior Member

Registered: 09/21/03
Posts: 57
Loc: Montana Militant Camp
Just want to let you know that if you direct-connect a speaker or headphones to the phone line, there will be an audible 'click' on the line, just as if someone picked up another phone on the same line. Also, it will open the line if there is no call.

If I remember correctly, it's just the green and red wires.

To tap into the line without the 'click', you need an induction tap.

Without that... you would need something (an alert homo sapiens often does the trick) to connect the device when someone else picked up the phone. I like the HS method because it's cheaper, but it only works if you're in the same residence and can tell when someone picks up the line.
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#11325 - 10/01/03 03:43 AM Re: anyway i could...
GoatDrugE Offline
Junior Member

Registered: 10/01/03
Posts: 14
Loc: california
does any 1 now where i can get a red box, if u do just let me now

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#11326 - 12/06/03 07:44 AM Re: anyway i could...
wtfsos2000 Offline
Junior Member

Registered: 12/05/03
Posts: 4
can sum1 tell me wich wires of the headphones go to the wires on the phone line
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#11327 - 05/01/04 12:48 AM Re: anyway i could...
n0mel Offline
Junior Member

Registered: 04/30/04
Posts: 34
Loc: ...
search on google for how phones work. You'll see that only two wires are used, tip and ring. the other two (yellow and black) are used for additional lines, etc. so, to answer your question both. the two wires are used for sending and recieving the signals.

a little tranformer is used as a duplex coil. seperates the incomming voice and outgoing voice. you would attach the speaker and mic to the proper connections on the duplex coil. information on how duplex coils work is in the first link below. the real use of a duplex coil is so you don't hear your own voice in the earpiece (you can, but just because they found the phone sounds dead to people if they can't hear their own voice a little, so, they usually set the duplex cable to allow a little through).

here's some good phone links
http://web.ukonline.co.uk/freshwater/how700.htm
http://electronics.howstuffworks.com/telephone2.htm

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#11328 - 05/01/04 01:19 AM Re: anyway i could...
Infinite Offline



Registered: 03/09/02
Posts: 1041
Loc: Canada eh
Quote:
Originally posted by n0mel:
search on google for how phones work. You'll see that only two wires are used, tip and ring. the other two (yellow and black) are used for additional lines, etc. so, to answer your question both. the two wires are used for sending and recieving the signals.
Uhh... In ALL twisted pair cables, phone or otherwise, each pair consists of a tip wire and a ring wire. If we're talking about two-pair phone wire, then there is two tips, and two rings: one for each pair.

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#11329 - 05/01/04 03:01 AM Re: anyway i could...
n0mel Offline
Junior Member

Registered: 04/30/04
Posts: 34
Loc: ...
I see what you mean. You're right. The inner two tip and ring wires are used in POTS for a single (first) line.

some wiring links I found
wiring references:
http://yoda.uvi.edu/InfoTech/rj45.htm
http://ckp.made-it.com/twistedpair.html

rj11 and 45 differences:
http://alamo.satlug.org/pipermail/satlug/2003-June/009888.html

on flat vs twisted for data connection:
http://yarchive.net/phone/twisted_pair.html

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#11330 - 05/02/04 08:52 AM Re: anyway i could...
weeve Offline
UGN Super Poster

Registered: 10/29/02
Posts: 616
Loc: The Beach
I had a whole explaination, but um...I got a error, and lost it. Giz is right, go do what he says. Um, box wise.

http://www.totse.com/en/phreak/boxes_old_and_new/

have fun.

Black, and yellow is ground.
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The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
The frumious Bandersnatch!"

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#11331 - 05/02/04 11:38 PM Re: anyway i could...
n0mel Offline
Junior Member

Registered: 04/30/04
Posts: 34
Loc: ...
Black and yellow do not have to have to be connected. They shouldn't be considered as ground. If you rely on them being ground, you'll be screwed if there is a second phone line, if they aren't connected to ground, and if the wiring only has red and green.

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#11332 - 05/03/04 01:37 AM Re: anyway i could...
weeve Offline
UGN Super Poster

Registered: 10/29/02
Posts: 616
Loc: The Beach
no, a good linesman won't consider them "grounded", but is used to it. a GOOD linesman has a voltage tester, like I USED to.

My last post got ate the first time, and explained grounding/wiring/tni/cab/taping/boxes in more definition. Thus I say this, in a short version. for grounding.

If someone doesn't know what a ground is, they shouldn't be in a tni, or a damn cab. Because stupid people don't belong around electricity. I think we both agree on that eh?

My grandfather is the only one in my family that was a linesmen(for nynex I think, after WWII), and during WWII. I know that back then they were much more precautionary of things, because they didn't have such good fail safes as they do today.

Though I have heard of linesmen getting shocked, or killed. I myself used to use certified THICK rubber gloves, and a voltage tester if I was really working on wiring. Anyway I hope this helps. I wish my other post would have gone through.
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"Beware the Jabberwock, my son!
The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
The frumious Bandersnatch!"

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