2.4ghz phone with wireless internet?? - Page 2

OldSchool · 12-25-2004

Quote:

Originally Posted by wrzwaldo

There was a time when this was in fact a problem. I recall a couple of instances where several long distance phone calls were made doing this. The charges ended up being reversed and the originator of the calls was charged with (if I remember correctly) theft of service.

Or it may have been diversion of services

Geesh what does a decent 2.4 ghz phone with some kind of line security cost? I seen them at Wal-mart ( the pit of hell before x-mas) for $39.99. Get a decent one for mothers day , slip the ghetto 2.4 interfering one in the trash and sell the 900 Mhz "hack out my cordless phone base" to your neighbor ar your next garage sale.

Even if you buy it at Wal-mart and when you bring it home it messes with your 802.11 network bring it back. Heck put a couple of banannas in the box they will still give your money back J/K.

streaker69 · 12-25-2004

Quote:

Originally Posted by OldSchool

Even if you buy it at Wal-mart and when you bring it home it messes with your 802.11 network bring it back. Heck put a couple of banannas in the box they will still give your money back J/K.

OT but a funny story..

Friend of mine goes to CompUSA to get a CDWriter they had on sale. First one he gets, takes it home, opens it up and it's some old quad speed reader sitting in the box. He takes it back right away explains the situation. They give him some trouble but give him another one. He takes it out to the car, opens it and it has a 5 1/4 drive inside. Brings it right back in. Store Drone goes back and gets another one off the shelf, opens it up and it has another CD Reader inside. Apparently someone was buying these things and returning them with other equipment inside.

RedSector · 12-25-2004

Quote:

Originally Posted by OldSchool

sell the 900 Mhz "hack out my cordless phone base" to your neighbor ar your next garage sale.

You might not want to loose your 900mhz phone yet, Mine is a Digital 900mhz Spread Spectrum, and I pretty sure it has encryption. You might want to see if yours does too. I'd never give up mine for a 2.4ghz one.

fordem · 12-31-2004

For those of you who are outside of the US - you may also need to consider cell phone service interference.

I bought a 900MHz cordless to avoid interference with my 802.11 wireless, and a couple of months later the two cell providers here both rolled out 900MHz GSM - now everytime a cell phone rings the cordless goes crazy.

theprez98 · 05-27-2005

Ok, I confess, I revived an old thread. But it wasn't that old. And besides, it's right on topic. Anyways...

Just an update on a problem I was having. I suspected interference when I kept losing a wireless connection in my house. I had a 2.4 ghz phone hooked up, but wasn't using it (plugged in to the wall, but never actually used the phone). The connection would get lost every hour or sometimes even less. Changing channels did not help to solve the problem. So I literally unplugged the 2.4 ghz phone from the wall. The computer has not lost the connection once in the four days since I unplugged the phone.

Of course it could have been some other source of outside interference that coincided with unplugging the 2.4 ghz phone, but as long as the computer stays connected, I'll lean on unplugging the phone as the solution to the problem. I have enough 900 mhz phones to pick up the slack.

streaker69 · 05-27-2005

Quote:

Originally Posted by theprez98

Ok, I confess, I revived an old thread. But it wasn't that old. And besides, it's right on topic. Anyways...

Just an update on a problem I was having. I suspected interference when I kept losing a wireless connection in my house. I had a 2.4 ghz phone hooked up, but wasn't using it (plugged in to the wall, but never actually used the phone). The connection would get lost every hour or sometimes even less. Changing channels did not help to solve the problem. So I literally unplugged the 2.4 ghz phone from the wall. The computer has not lost the connection once in the four days since I unplugged the phone.

Of course it could have been some other source of outside interference that coincided with unplugging the 2.4 ghz phone, but as long as the computer stays connected, I'll lean on unplugging the phone as the solution to the problem. I have enough 900 mhz phones to pick up the slack.

Was the handset actually on the base during this time period?

theprez98 · 05-27-2005

Quote:

Originally Posted by streaker69

Was the handset actually on the base during this time period?

Yes. 100% of the time. That's what was so intriguing to me. I figured it wouldn't be transmitting, and thus shouldn't be causing any sort of interference. Beats me. When I first mentioned it to you a few days ago I didn't even mention the 2.4 ghz phone because of that exact reason, we weren't even using it, and it was on the base simply charging. Oh well, I can't argue with the results. And I have to be careful experimenting with it anymore, too, because the wife's internet is working now...

beakmyn · 05-27-2005

I believe it was still transmitting. The phone has a built in "security" system and every once in awhile it changes the key. This is to prevent two phones from being able to listen in on one another's conversation. My guess is every hour the phone was talking to the base through wireless and updating it's "key".

theprez98 · 05-27-2005

Quote:

Originally Posted by beakmyn

I believe it was still transmitting. The phone has a built in "security" system and every once in awhile it changes the key. This is to prevent two phones from being able to listen in on one another's conversation. My guess is every hour the phone was talking to the base through wireless and updating it's "key".

I figured it was something like that. It just didn't occur to me when I first thought about potential sources of interference. Oh well, just dig up another 900 mhz phone...

Dutch · 05-27-2005

Quote:

Originally Posted by theprez98

Yes. 100% of the time. That's what was so intriguing to me. I figured it wouldn't be transmitting, and thus shouldn't be causing any sort of interference. Beats me. When I first mentioned it to you a few days ago I didn't even mention the 2.4 ghz phone because of that exact reason, we weren't even using it, and it was on the base simply charging. Oh well, I can't argue with the results. And I have to be careful experimenting with it anymore, too, because the wife's internet is working now...

Finally... Emperical data proving that females have a special relationship with telephones.

From now on, we can refer to your example, and say to our spouses : "Stop using the phones, and your computer won't fuck up so much...".

I just wonder if it will work with teen daughters...

Dutch

Thorn · 05-27-2005

Quote:

Originally Posted by Dutch

Finally... Emperical data proving that females have a special relationship with telephones. ...

You needed outside data to prove this? I always thought it was one of those things which is immediately obvious to the most casual observer.

skizziks · 05-27-2005

Wireless Lans will not transmit if there is another transmission on the same band....The Lan or the AP will wait until there is no traffic on that band before it sends its packets... Thus an ap will not transmit when there is a 2.4ghz phone transmitting on the same band....

Dutch · 05-27-2005

Quote:

Originally Posted by skizziks

Wireless Lans will not transmit if there is another transmission on the same band....The Lan or the AP will wait until there is no traffic on that band before it sends its packets... Thus an ap will not transmit when there is a 2.4ghz phone transmitting on the same band....

<AlexTrebek>
B eeeeep.. Wrong answer, next contestant please...
</AlexTrebek>

What happens is that there is to much NOISE due to interference on the same frequency, so the AP and/or the client is unable to decode the data it receives, as it comes through mangled, and the data therefore needs to be retransmitted.

Proof: Use a 2.4 Ghz cordless phone, while running Kismet. You will see the beacons from the AP (i.e. the AP is transmitting) and if you have a card which reports noiselevels correctly, you will see the noisefloor rise, possibly even forcing the client and AP to resync at lower transmission rates, and even dissassociate.

Dutch

Dutch · 05-27-2005

Quote:

Originally Posted by Thorn

You needed outside data to prove this? I always thought it was one of those things which is immediately obvious to the most casual observer.

Think it over Thorn....What happens to you, if you say to your spouse that you have observed she and her fellow females use the phones to much ??

Now you can point her to an emperical dataset, AND pass any blame to theprez98

CMB in effect

Dutch

theprez98 · 05-27-2005

Quote:

Originally Posted by Dutch

Think it over Thorn....What happens to you, if you say to your spouse that you have observed she and her fellow females use the phones to much ??

Now you can point her to an emperical dataset, AND pass any blame to theprez98

CMB in effect

Dutch

Oh sure, blame it all on me!

05-27-2005	#23 (permalink)
beakmyn Free Public Wifi Join Date: Aug 2003 Posts: 5,068	I believe it was still transmitting. The phone has a built in "security" system and every once in awhile it changes the key. This is to prevent two phones from being able to listen in on one another's conversation. My guess is every hour the phone was talking to the base through wireless and updating it's "key". __________________ ┌──────────────────────────────┐ ╞ NS Icons Explained\|et hoc genus omne ╡ └──────────────────────────────┘ Creating yesterday's future, Today!

05-27-2005	#27 (permalink)
skizziks Registered Member Join Date: May 2005 Posts: 118	2.4ghz Phones and Wireless Lans Wireless Lans will not transmit if there is another transmission on the same band....The Lan or the AP will wait until there is no traffic on that band before it sends its packets... Thus an ap will not transmit when there is a 2.4ghz phone transmitting on the same band....

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12-31-2004	#19 (permalink)
fordem Tropical Stumbler Join Date: Apr 2002 Posts: 575	For those of you who are outside of the US - you may also need to consider cell phone service interference. I bought a 900MHz cordless to avoid interference with my 802.11 wireless, and a couple of months later the two cell providers here both rolled out 900MHz GSM - now everytime a cell phone rings the cordless goes crazy.

05-27-2005	#20 (permalink)
theprez98 SpoonfeederExtraordinaire Join Date: Jan 2005 Location: Maryland Posts: 3,755	Ok, I confess, I revived an old thread. But it wasn't that old. And besides, it's right on topic. Anyways... Just an update on a problem I was having. I suspected interference when I kept losing a wireless connection in my house. I had a 2.4 ghz phone hooked up, but wasn't using it (plugged in to the wall, but never actually used the phone). The connection would get lost every hour or sometimes even less. Changing channels did not help to solve the problem. So I literally unplugged the 2.4 ghz phone from the wall. The computer has not lost the connection once in the four days since I unplugged the phone. Of course it could have been some other source of outside interference that coincided with unplugging the 2.4 ghz phone, but as long as the computer stays connected, I'll lean on unplugging the phone as the solution to the problem. I have enough 900 mhz phones to pick up the slack.