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Cellular Phreaking - School Essays

Cellular Phreaking

The cellular/mobile phone system is one that is perfectly set up to be
exploited by phreaks with the proper knowledge and equipment. Thanks to
deregulation, the regional BOC's (Bell Operating Companies) are scattered and do
not communicate much with each other. Phreaks can take advantage of this by
pretending to be mobile phone customers whose "home base" is a city served by a
different BOC, known as a "roamer". Since it is impractical for each BOC to
keep track of the customers of all the other BOC's, they will usually allow the
customer to make the calls he wishes, often with a surcharge of some sort.
The bill is then forwarded to the roamer's home BOC for collection. However,
it ...

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of transmission, it transmits its phone number
and its 8 digit ID number to that cell, who will keep track of it until it gets
far enough away that the sound quality is sufficiently diminished, and then the
phone is "handed off" to the cell that the customer has walked or driven into.
This process continues as long as the phone has power and is turned on. If the
phone is turned off (or the car is), someone attempting to call the mobile phone
will receive a recording along the lines of "The mobile phone customer you have
dialed has left the vehicle or driven out of the service area." When a call is
made to a mobile phone, the switching equipment will check to see if the mobile
phone being called is "logged in", so to speak, or present in one of the cells.
If it is, the call will then act (to the speaking parties) just like a normal
call - the caller may hear a busy tone, the phone may just ring, or the call may
be answered.
How does the switching equipment know whether or not ...

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Cellular Phreaking. (2008, January 21). Retrieved August 22, 2025, from http://www.essayworld.com/essays/Cellular-Phreaking/77808

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PAPER DETAILS

Added: 1/21/2008 07:28:25 AM
Category: Legal Issues
Type: Free Paper
Words: 886
Pages: 4

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