The motivations for security in cellular telecommunications systems are to secure conversations and signaling data from interception as well as to prevent cellular telephone fraud. With the older analog-based cellular telephone systems such as the Advanced Mobile Phone System (AMPS) and the Total Access Communication System (TACS), it is a relatively simple matter for the radio hobbyist to intercept cellular telephone conversations with a police scanner. A well-publicized case involved a potentially embarrassing cellular telephone conversation ....etc

[:=Read Full Message Here=:]

hii need a clear info about it..plzz dp send dis.. ....etc

[:=Read Full Message Here=:]

i want a source code for algorithmic paging ....etc

[:=Read Full Message Here=:]

Vasundhra jaitly



Introduction to paging:
• Memory is divided into fixed size chunks; FRAMES
• Process is divided into fixed size chunks;PAGES
• A frame can hold one page of data
• Physical address space of a process need not be contiguous
• Very limited internal fragmentation
• No external fragmentation

Paging is one of the memory-management schemes by which a computer can store and retrieve data from secondary storage for use in main memory. In t ....etc

[:=Read Full Message Here=:]

Introduction

In computer operating systems, demand paging is an application of virtual memory. In a system that uses demand paging, the operating system copies a disk page into physical memory only if an attempt is made to access it (i.e., if a page fault occurs). This is an example of lazy loading techniques.

The compressed ROM file system (or cramfs) is a free read-only Linux file system designed for simplicity and space-efficiency. It is mainly used in embedded systems and small-footprint systems. Unlike a compressed image of a ....etc

[:=Read Full Message Here=:]

Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz. It is estimated that many countries outside of Europe will join the GSM partnership.
Throughout the evolution of cellular telecommunications, various systems have been developed without the benefit of standardized ....etc

[:=Read Full Message Here=:]

yes i'm looking for paging and page fault ppt .
plz send the material to me. ....etc

[:=Read Full Message Here=:]

I need the project report for gsm based home security system
and also the ppt for it.can u plz send it.........my mail is [email protected] ....etc

[:=Read Full Message Here=:]

Done by:
Ahmed Sudqi Hussein Abdul-Rahman
Ahmad Nasr Raja Mohammad
Supervised by:
Prof. Nihad Dib

Abstract
This report presents the design, implementation, and testing of a dual-band cell-phone jammer. This jammer works at GSM 900 and GSM 1800 simultaneously and thus jams the three well-known carriers in Jordan (Zain, Orange, and Umniah). This project went through two phases:
Phase one: studying the GSM-system to find the best jamming technique, establishing the system d ....etc

[:=Read Full Message Here=:]

Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz. It is estimated that many countries outside of Europe will join the GSM partnership.Throughout the evolution of cellular telecommunications, various systems have been developed without the benefit of standardized s ....etc

[:=Read Full Message Here=:]