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

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i need seminar presentaton and report on dcs for btech final year seminars ....etc

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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

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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

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the distributed control system (DCS) is a control system usually of a manufacturing system,process or any kind of dynamic system, in which the controller elements are not central in location (like the brain) but are distributed throughout the system with each component sub-system controlled by one or more controllers. The entire system of controllers is connected by networks for communication and monitoring.

DCS is a very broad term used in a variety of industries, to monitor and control distributed equipment.

Electrical power grids and e ....etc

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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

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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

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DCS APPLICATION


A distributed control system (DCS) refers to a control system usually of a
manufacturing system, process or any kind of dynamic system, in which the
controller elements are not central in location (like the SCADA) but are distributed
throughout the system with each component sub-system controlled by one or more
controllers. The entire systems of controllers are connected by networks for
communication and monitoring.A DCS typically uses custom designed processors a ....etc

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please send me pdf file for short questions on plc. ....etc

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I am looking for detailed info on foxboro Spec 200 Micro DCS.....Manual maybe. looking for associated hardware and cabinet foot print......system connection diagram??

thanks, Gerry Hebert ....etc

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