Re:DSL modems do exist...
on
WinDSL Coming?
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· Score: 1
It's only 48 volts *until* you pick up the receiver or otherwise put a load on the line. It's that voltage drop that tells the telco central office that you want a dial tone.
Two stories of interest on The Register right now. The first one says that Kingston Technologies is dropping prices on some of its Rambus RIMMs, 35% average, and as much as 68%. The second one says "Micron...will demo three platforms using double data rate (DDR) memory at WinHec 2000 in New Orleans next week." Look for a dual processor platform, a dual processor dual controller platform for the workstation and server markets, and a uniprocessor system, all running 266MHz memory modules and using a 133MHz front side bus. Yes, it's been very entertaining readng the Register articles about how everybody kept badmouthing Rambus and the stock price kept climbing in response, until the other day when investors finally tripped over a clue.
"...and connect every phone in you house through the modem."
They said it, I didn't.
I suppose what could be done is run the phone line into the modem, then run a patch cord from that modem's other RJ-11 jack to one of the jacks on an old 2400 modem modified as I'm about to describe, and plug the house's telephone system into the other jack on the modified modem.
Take the old modem, strip off the parts, build on a touch-tone detector, a ring generator, and an off-hook detector. When the non-telemarketer caller presses "1", the touch-tone detector would activate a relay connecting the jack the house phones were plugged into to the ring generator, feeding the ringing voltage (or actually the current caused by the ringing voltage) into the house phone lines. Then, when someone in the house picks up one of those phones, the off-hook detector would cut out that relay and activate another one that would connect the house phone jack to the jack patched to the answering modem. That same off-hook detector would activate that relay and make that same connection whenever someone picked up one of the house phones in order to call out.
So, did you want to wait 10 years and get it for free, or wait 10 years and then pay a lot to someone else, secure in the knowledge that the original creator got screwed?
If a lot of what used to be your favorite songs are winding up behind commercials now, imagine if advertisers could wait 10 years and use whatever they wanted to for free.
Drop into a Radio Shack or generic equivalent sometime and look at the 2 piece plastic boxes they sell for building electronic projects in. The ones that they've carried for the last 30 years are a medium dark blue.
The article was a little vague as to whether we're talking about screwing up GPS receivers here on earth or screwing up the actual orbiting transmitters themselves. I assume that interfering with reception of the GPS signal within a limited area would be considerably less of a technological and financial challenge, but if you can stick this thing in a truck or jeep and take it where it's needed, wouldn't it be just as easy to carry weapons instead and inflict enough damage to disable whatever you wanted to jam? That way, you're in and out quickly instead of hanging around waiting to get shot or captured, because anything this would be used against wouldn't be sitting around unguarded and unprotected.
"I'm doing it because I want to, not because you tell me to"
How perceptive of you to realise that my actions are, and will be, governed by me, and that any correlation between my actions and your wishes is merely coincidental. You weren't planning on taking credit for any of my previous sig changes, were you?
On a related note, I have relatives that will be 13 in a few years, and our exchanges are no doubt excellent preparation for that, so I suppose you have been of some service, and for me not to thank you would be as poorly mannered as you, so, thank you for having been of service.
If you use capital (uppercase) letters, like this--<A HREF="http://www.jackpot.com"> jackpot.com</A>, Slashdot likes it better.:-) Makes it come out like this-- jackpot.com
Subject: CABLE TV Date: Mon, 17 Apr 2000 02:25:34 -0700 From: cabletv4u1@yahoo.com To: cabletv4u1@yahoo.com
I have no connection with Yahoo. You can see what the address of my account is right up there by my user name. I expect occasional spam with that address in the "To:" line. Why do I get stuff addressed to addresses other than my own, addresses that don't even include the correct domain name? Here's another example
Subject: As seen on tv Date: Sun, 16 Apr 00 22:41:44 EST From: easymoney@earthdome.com To: Friend@public.com and another
Subject: Expose your business to the Internet Date: Wed, 12 Apr 2000 01:54:47 From: lippy222_1999@yahoo.com To: <mecki.colongne@t-online.de> How does this stuff get through?
Normally there's about 50 Volts DC on the phone line before you pick up the handset. When a call is coming in, a rapidly varying signal around 70 to 100 Volts is placed on the line. This either activates mechanical ringers in older phones or triggers a detection circuit in newer phones that in turn triggers another circuit that rings or chirps or whistles or chimes or whatever. That's why not every phone in the house rings in unison. I'm not sure a modem is going to be capable of producing a signal that high in voltage at a high enough current level (think of it as trying to use high water pressure to pump a lot of water at once into a system of pipes and trying to do it with only a squirt gun) to actually cause electromagnetic coils to move a 3 inch rod with a weight on one end back and forth between 2 bells with enough force to cause the weight to strike the bells hard enought to make them ring loudly.
Slashdot Mirror
It's only 48 volts *until* you pick up the receiver or otherwise put a load on the line. It's that voltage drop that tells the telco central office that you want a dial tone.
Thank you for quoting one of my young relative's favorite movies, reminding me of how pointless and fruitless it is to argue with children.
I really miss the days when moderators had a sense of humor. :-(
Two stories of interest on The Register right now.
The first one says that Kingston Technologies is dropping prices on some of its Rambus RIMMs, 35% average, and as much as 68%.
The second one says "Micron...will demo three platforms using double data rate (DDR) memory at WinHec 2000 in New Orleans next week."
Look for a dual processor platform, a dual processor dual controller platform for the workstation and server markets, and a uniprocessor system, all running 266MHz memory modules and using a 133MHz front side bus.
Yes, it's been very entertaining readng the Register articles about how everybody kept badmouthing Rambus and the stock price kept climbing in response, until the other day when investors finally tripped over a clue.
It's not unheard of for dead artists to have left behind families in financial need.
They said it, I didn't.
I suppose what could be done is run the phone line into the modem, then run a patch cord from that modem's other RJ-11 jack to one of the jacks on an old 2400 modem modified as I'm about to describe, and plug the house's telephone system into the other jack on the modified modem.
Take the old modem, strip off the parts, build on a touch-tone detector, a ring generator, and an off-hook detector. When the non-telemarketer caller presses "1", the touch-tone detector would activate a relay connecting the jack the house phones were plugged into to the ring generator, feeding the ringing voltage (or actually the current caused by the ringing voltage) into the house phone lines. Then, when someone in the house picks up one of those phones, the off-hook detector would cut out that relay and activate another one that would connect the house phone jack to the jack patched to the answering modem. That same off-hook detector would activate that relay and make that same connection whenever someone picked up one of the house phones in order to call out.
If a lot of what used to be your favorite songs are winding up behind commercials now, imagine if advertisers could wait 10 years and use whatever they wanted to for free.
Yes, but before would have been even better.
Does that mean you'll go there to annoy people instead of here? Then let me be among the first to wish you every success with it.
They posted the explanation in the same place as the explanations for stories that get "disappeared". :-)
Poe has about 50 years worth of prior art claim on that one.
Actually analog computers could do bouncing balls before that.
Drop into a Radio Shack or generic equivalent sometime and look at the 2 piece plastic boxes they sell for building electronic projects in. The ones that they've carried for the last 30 years are a medium dark blue.
Sure, look how much Tolkien raked in during the first 10 years after he wrote "Lord of the Rings".
The article was a little vague as to whether we're talking about screwing up GPS receivers here on earth or screwing up the actual orbiting transmitters themselves.
I assume that interfering with reception of the GPS signal within a limited area would be considerably less of a technological and financial challenge, but if you can stick this thing in a truck or jeep and take it where it's needed, wouldn't it be just as easy to carry weapons instead and inflict enough damage to disable whatever you wanted to jam?
That way, you're in and out quickly instead of hanging around waiting to get shot or captured, because anything this would be used against wouldn't be sitting around unguarded and unprotected.
I suspect that they believe the author has a right to license it as *they* see fit.
How perceptive of you to realise that my actions are, and will be, governed by me, and that any correlation between my actions and your wishes is merely coincidental.
You weren't planning on taking credit for any of my previous sig changes, were you?
On a related note, I have relatives that will be 13 in a few years, and our exchanges are no doubt excellent preparation for that, so I suppose you have been of some service, and for me not to thank you would be as poorly mannered as you, so, thank you for having been of service.
I experimented with changing it because so many of you idiots were too stupid to get the joke, so if you want to claim credit on that basis...:-)
"Well, the risk of anyone reading a /. post older than a day is rather slim, don't you think?" :-)
Unless you're in a running battle with a sig nazi
Well, you're obviously an expert on the topic of how to waste space.
You better hope nobody else sees that post :-)
But what's the price difference with or without an OS? In other words, is there a Windows tax?
If you use capital (uppercase) letters, like this--<A HREF="http://www.jackpot.com"> jackpot.com</A>, Slashdot likes it better. :-)
Makes it come out like this-- jackpot.com
This is from one I got the other day
Subject: CABLE TV
Date: Mon, 17 Apr 2000 02:25:34 -0700
From: cabletv4u1@yahoo.com
To: cabletv4u1@yahoo.com
I have no connection with Yahoo. You can see what the address of my account is right up there by my user name. I expect occasional spam with that address in the "To:" line. Why do I get stuff addressed to addresses other than my own, addresses that don't even include the correct domain name?
Here's another example
Subject: As seen on tv
Date: Sun, 16 Apr 00 22:41:44 EST
From: easymoney@earthdome.com
To: Friend@public.com
and another
Subject: Expose your business to the Internet
Date: Wed, 12 Apr 2000 01:54:47
From: lippy222_1999@yahoo.com
To: <mecki.colongne@t-online.de>
How does this stuff get through?
Normally there's about 50 Volts DC on the phone line before you pick up the handset.
When a call is coming in, a rapidly varying signal around 70 to 100 Volts is placed on the line.
This either activates mechanical ringers in older phones or triggers a detection circuit in newer phones that in turn triggers another circuit that rings or chirps or whistles or chimes or whatever.
That's why not every phone in the house rings in unison.
I'm not sure a modem is going to be capable of producing a signal that high in voltage at a high enough current level (think of it as trying to use high water pressure to pump a lot of water at once into a system of pipes and trying to do it with only a squirt gun) to actually cause electromagnetic coils to move a 3 inch rod with a weight on one end back and forth between 2 bells with enough force to cause the weight to strike the bells hard enought to make them ring loudly.