Correct? Voice & 3G Data networks are seperate?
Somebody in another forum, I will post the link below, says that one of the reasons ATT's 3G network is slowed down is bc it shares voice traffic with the 3G data.
I've always thought that ATT's voice & 3G data networks were seperate? Am I right, or am I wrong???
Here's the link to the discussion:
https://www.phonescoop.com/news/discuss.php?fm=m&ff= ... »
I've always thought that ATT's voice & 3G data networks were seperate? Am I right, or am I wrong???
Here's the link to the discussion:
https://www.phonescoop.com/news/discuss.php?fm=m&ff= ... »
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Your wrong my friend.
Voice and data can be and are in areas both run on ATT'S 3G.
That's why you'll see examples of people saying their voice quality is better while in a ATT's 3G area rather than an area only serviced by their EDGE.
Also 3G was an advertisement ploy for ATT allowing them to tout more voice and data capacity with 3G bands available to them.
Voice and data can be and are in areas both run on ATT'S 3G.
That's why you'll see examples of people saying their voice quality is better while in a ATT's 3G area rather than an area only serviced by their EDGE.
Also 3G was an advertisement ploy for ATT allowing them to tout more voice and data capacity with 3G bands available to them.
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Thanks for responding.
Something else I have trouble understanding is the bands that are 3G for ATT are also the same bands that are quad band GSM. 850/1900. So when 3G was added which bands were added?
Thank you for not being rude or sarcastic. I know quite a bit of things about wireless stuff,. . .but some things I don't know.
Something else I have trouble understanding is the bands that are 3G for ATT are also the same bands that are quad band GSM. 850/1900. So when 3G was added which bands were added?
Thank you for not being rude or sarcastic. I know quite a bit of things about wireless stuff,. . .but some things I don't know.
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It's all radio frequencies. Think of it as a CB radio on steroids, a ton of different channels all able to carry on there own conversation at the same time. But where as CB radio is only good for about 5 miles, cellular is good for infinity and beyond.
Here's link to help explain it.
http://electronics.howstuffworks.com/cell-phone1.htm »
Here's link to help explain it.
http://electronics.howstuffworks.com/cell-phone1.htm »
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Ah. . .good old "How Stuff Works". I have one of they're books @ home. Thanks, I'll check out the link.
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andy2373 said:
It's all radio frequencies. Think of it as a CB radio on steroids, a ton of different channels all able to carry on there own conversation at the same time. But where as CB radio is only good for about 5 miles, cellular is good for infinity and beyond.
Here's link to help explain it.
http://electronics.howstuffworks.com/cell-phone1.htm ... »
CB radios have FAR greater range than just 5 miles. You're probably thinking of FRS walkie-talkies, which usually only have about a 5 mile range.
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CB radios have a maximum legal output of 5 watts. Being an AM signal, that usually figures out to about 1 mile per watt, or 5 miles. However there are other variables at work here. First of all is antenna size and strength. The more gain of an antenna, the farther it will transmit. Also, because it is an AM signal, not FM like cell phones, the signal is not just line of sight. The signal can bounce off of different layers of the atmosphere, thus producing a "skip" signal. This skip is hard to regulate and control and is swomewhat unpredictable, so you can not consistantly count on having the same skip each time you use the radio.
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PhonemanJ said:
CB radios have a maximum legal output of 5 watts. Being an AM signal, that usually figures out to about 1 mile per watt, or 5 miles. However there are other variables at work here. First of all is antenna size and strength. The more gain of an antenna, the farther it will transmit. Also, because it is an AM signal, not FM like cell phones, the signal is not just line of sight. The signal can bounce off of different layers of the atmosphere, thus producing a "skip" signal. This skip is hard to regulate and control and is swomewhat unpredictable, so you can not consistantly count on having the same skip each time you use the radio.
Some CB's have FM capabilities. You can also buy booste ...
(continues)
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I said "Legal maximum Output". If caught with a linear amplifier (which really hasn't been enforced in several years) the equipment will be confiscated and fines up to $10,000. And if the radio has been altered and is interfering with the 10 Meter amateur radio band, higher fines are applicable.
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To answer the question of the original post, the 3G data and voice networks are separate. If you work for ATT you can go to MYCSP and use the MTI Map tool. It will show you the areas of the 3G voice and data, and you can see that the maps are slightly different.
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a few areas will use the same, but where there is 850 and 1900 availible, 3G will operate seperately, 850 for data, 1900 for voice (if there is enough of each spectrum) because 1900 can fit more calls
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PhonemanJ said:
To answer the question of the original post, the 3G data and voice networks are separate. If you work for ATT you can go to MYCSP and use the MTI Map tool. It will show you the areas of the 3G voice and data, and you can see that the maps are slightly different.
CSP and MTi are great tools. However, 3G is voice and data combined. EDGE and GPRS are voice and data separate. While on 3G, have you noticed that you can talk on the phone and surf the web simultaneously? That is an advantage of UMTS/W-CDMA. The reason why the maps vary slightly is to demonstrate that voice and data behaves differently.
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PhonemanJ said:
I said "Legal maximum Output". If caught with a linear amplifier (which really hasn't been enforced in several years) the equipment will be confiscated and fines up to $10,000. And if the radio has been altered and is interfering with the 10 Meter amateur radio band, higher fines are applicable.
My father-in-law's CB antenna will light up a fluorescent bulb!!! He claims to have talked to people in California on it. I'd say if he ever gets caught, he might get the maximum??? 😎
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Not necessarily. In fact, back in the CB boom days of the 70's, I worked for Radio Shack and we used to attach flourescent bulbs to antennas all the time to light up when the operator keyed his mike. It makes for a neat visual effect. Also, your father-in-law may very well have spoken to someone in California. That is the skip effect that I was talking about in one of my previous posts. That is how ham radio operators talk all over the world. The signal bounces off of layers of the atmosphere and skips down sometimes 100s (or in the case of ham radio, because of higher power 1000s) of miles from your location.
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No problem. I'm an old CB and ham radio operator. Your analagy is a good one. A cell phone is nothing but a 1/2 watt FM transciever, designed to contact the nearest antenna. The only difference is that being an FM signal on such a high frequency, a cell phone is line of sight (in other words the tower has to see the signal so that it can be transferred into the system) AM broadcasts on lower frequencies, such as those used on CB, can be line of sight or bounced off the atmosphere.
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