217 lines
9.7 KiB
Plaintext
217 lines
9.7 KiB
Plaintext
*****************
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A Cellular Guide*
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By: Downtime *
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*****************
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Contents
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~~~~~~~~
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1) Some of the Cellular Phone Basics
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2) The reason for the name Cellular.
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3) Review of the Cellular System.
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4) What goes on during Cellular Calling.
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5) Cellular Cloning and Other Features.
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6) Basic Test Mode Programming
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7) What kind of Cellular is Best?
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8) Where is the Cellular Technology Going?
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9) Closing
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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Introduction
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~~~~~~~~~~~~
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We have all seen them, heard about them, and most people use them. What am I
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talking about? None other than the Cellular Phone. One of the most interesting
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things ever that is associated with the Phreaking Community. This guide will
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not tell you how to do illegal things with your cell but this will give you a
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basic view of how the cellular phone works. Enjoy!
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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1) Some of the Cellular Phone Basics
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The main thing to remember about a cellular phone is that it is a
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radio. It is basically like a hand held walkie talkie except with a cellular
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phone you have alot more capabilities and can talk and listen at the same
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time. Remember though that when you are talking on a cellular phone what you
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say may and possibly will be monitored very easily. There are two main types
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of Cellular Phones Analog and Digital.
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1) Analog: On this the audio is modulated directly onto a carrier
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2) Digital: On Digital, these are converted to digitized samples.
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These are transmitted as 1's and 0's. Then it is converted
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back to voltage so you get the audio signal.
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Each Cellular Phone has to identify itself to its cell site before
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service is allowed. They are identified by what is known as an ESN and a MIN.
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1) ESN: This stands for Electronic Serial Number. This is a 32-bit
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Binary Number if I am not mistaken.
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2) MIN: Mobile Identification Number. This is the phone number of the
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Cellular Phone. 10 digits including area code and all.
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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2) The Reason for the name Cellular.
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The reason for this is that in each city the Cellular Phone System is
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divided into smaller sections also referred to as cells. These usually have an
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antenna on top of a high surface that gives out strong signals therefore giving
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you clear service.
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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3) Review of the Cellular System.
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The main system operating in the United States is the AMPS, Advanced
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Mobile Phone System. The AMPS are composed of two different things:
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1) EAMPS: This system has 832 channels.
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2) NAMPS: This system has three times the amount with very clear
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signals.
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All these have 42 channels that are used to setup calls the rest are
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for talking over the Cellular Phone.
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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4) What goes on during Cellular Calling.
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Just imagine if you are stranded somewhere or possibly just want to
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use your cellular phone to call someone. Have you ever wondered how it worked?
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Why it worked? If so then I will explain how and why in this section here.
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Enjoy!
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1) Scan Channels: In this step the cellular phone scans for the
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closest cell site near you so that you can get
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the strongest signals possible due to your location
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at the moment.
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2) Choose Strongest: As stated above the cellular phone finds the
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closest site to give you the best performance.
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3) Send Message: The phone sends a short message to the cell site
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verifying the MIN, ESN, and the number that you
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have just entered to call.
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4) Assign Channel: After verifying the above information and they
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know that you are a legal paying customer, the
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base assigns a mesage to your phone, telling it
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where the conversation is.
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5) Talk: Phone then gets on that channel and begins to ring. Then
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you begin to talk like normal. The easiest step of them all.
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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5) Cellular Cloning and Other Features.
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Cellular Cloning is one of the newest and more popular things going
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on now a days. What you are basically doing is programming someone else's
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MIN and ESN into your phone in the process of fooling your cellsite into
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thinking that you are actually them. Is this legal? Well it depends on which
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way you use it. If you use it to clone one of your own phones where you can
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have two phones exactly the same then no, but if you are cloning someone
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else's then yes it is very illegal. The philosophy of a cellular phone phreak
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as stated in another text written by John Markoff is to push the machines as
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far as they would go. The possibilites with a cellular phone are practically
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endless. You can make one into a scanner as well as many other things.
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The first step of being able to do ANY of this is getting the cellular
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phone into what people call test mode. This is where you can practically change
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the whole phone's features. The main way to get into this is to crack the access
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code. There is a good site that deals with that at the following URL:
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http://www.radiophone.com They have great information. Another way to get a
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cellular phone is by taking the battery pack off of the back and look in the
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lower corner. Here you will see some little prongs, you can get a small piece
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of tin foil and place it in the center of the prong like so: |*|
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then put the battery pack back on the back of the phone. Then turn the phone
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on and when you turn it on you should see an array of flashing numbers. If
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so you are in luck because you are in test mode! :)~
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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6) Basic Test Mode Programming
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This section will tell you what to do once you get into the test mode.
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This part comes from 1993 Cellular Subscriber Technical Training Manual. I
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give full credit to them for this information. I am not going to include all
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of it because it would take forever. Here are some of the basics. Enjoy!
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32# = clear the phone
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38# = displays the ESN
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55# = test mode programming
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01# = restart
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13# = power off
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16# = setup
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18# = send NAM
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34# = turn DTMF off
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61# ESN transfer
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That is jsut some of the very basics. Of course there is alot more
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and if I ever write another article with Cellular Phones I will include some
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more. Don't want to get very much ahead of ourselves. :)
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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7) What kind of Cellular is Best?
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There are different kinds of cellular phones for different kind of
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people. Me personally I have experience so far with only Motorola. I plan to
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get a Nokia soon. Nokia are very advanced and have many options. There is also
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the OKI those have been stated to be good. The one that interests me at the
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moment are these new ones that are Java based. If you would like to read more
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about these go to the following URL:
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http://www.nortel.com/cool/norteledge/edge298/N._IP_N.html
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But as stated above many people like many different things, there is
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also a new Motorla that is the IDEN I10000. These have two-way radio and
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alphanumeric pager in one. These weigh in at around 5 oz. as well.
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They also include: One touch call back, a speakerphone, and a multilanguage
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operation that displays prompts in one to four different languages. For more
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information on this you can call: 1.800.453.0920
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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8) Where is the Cellular Technology Going?
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This is a very interesting thing to think about including all the
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things that they already have out and available at this point in time. There
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is no way to actually predict what is going to come out next due to people
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having new ideas with each and every passing day. It should be an interesting
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thing to think forward about. Whatever it is, it will turn heads I am sure!
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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9) Closing
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We have seemed to read the end of this guide. I hope this has been
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an informative source and you enjoyed it. I will probably write another cellular
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guide in the future but am not sure at the moment. Remember "Push the Machine
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as Far as it will Go!" =)
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_____________________________________________________________________________
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" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
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10) Shout Outs
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1) DarkCyde: Keeping it real!
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2) #9x: Great channel
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3) Slinker aka _14k4: For getting me interesting
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4) T0n3 K1LL4H: For being there for me
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5) GrinnDaddy: Helping me along the way
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6) Sparky: Being a good friend
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7) Twisted Nickel:
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Sim
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Digital Fokus
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Voltage
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Vyle
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If I left any of ya guys out, ya know who ya are!
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EOF
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