implimentation of landline switching system using vhdl

A landline telephone (also known as land line, land-line, main line, home phone, landline, fixed-line, and wireline) refers to a phone that uses a metal wire or fibre optic telephone line for transmission as distinguished from a mobile cellular line, which uses radio waves for transmission. In 2003, the CIA reported approximately 1.263 billion main telephone lines worldwide. China had more than any other country at 350 million and the United States was second with 268 million. The United K ....etc

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SMS through Telephone using AT89S8252
This system can transmit message or text through ordinary Land Line Telephone from one end (source) to another end (designation). The tecnology used is the DTMF(Dual Tone Multiple Frequency). technology. The system has two sections one for editing the text and to transmit the edited text and the other section consist for receiving the text message.There are several steps for this project:
* DTMF decoding/Encoding process
* Ring sensing
* ON/OFF hook detection
* Displaying the message in LCD
T ....etc

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Introduction
With online business more important now than in yesteryears, importance of securing
data present on the systems accessible from the Internet is also increasing. If a
system is compromised for even a small time, it could lead to huge losses to the organization.
Everyday new tools and techiniques are devised to stop these malicious
attempts to access or corrupt data.
Traditionally firewall have been used to stop the intrusion attempts by an
attacker. But firewalls have static configurations that bloc ....etc

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I want a power point presentation on wireless messaging through landline ....etc

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ABSTRACT
The objective of this project is to design an embedded system which can control appliances remotely. This project is designed to study the basic implementation of DTMF (Dual Tone Multi Frequency).
The DTMF signal is composed of high frequencies & low frequencies. Each key is assigned a low frequency and a high frequency. When a particular key is pressed, the frequencies those are specific to that particular key are transmitted. Therefore, no two keys will have a same set of low & high frequencies ....etc

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Interactive Program(me) Guide (IPG) or Electronic Service Guide (ESG), EPG is an on-screen guide to scheduled broadcast television programs, permitting a viewer to browse, select, and discover contents based on time, title, channel, genre, etc, using their remote control, a keyboard or a phone keypad. This technology is predominant in the digital television and radio world however EPGs exist that rely upon analogue technology (using the VBI or vertical blanking interval). EPG broadcasts data to an application residing within middleware in a se ....etc

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Encryption and decryption are fundamental requirements of every secure-aware application, therefore the Java platform provides strong support for encryption and decryption through its Java Cryptographic Extension (JCE) framework which implements the standard cryptographic algorithms such as AES, DES, DESede and RSA. This tutorial shows you how to basically encrypt and decrypt files using the Advanced Encryption Standard (AES) algorithm. AES is a symmetric-key algorithm that uses the same key for both encryption and decryption of data.

package ....etc

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To get full information or details of project customer satisfaction for landline please have a look on the pages

http://seminarsprojects.net/Thread-customer-satisfaction-on-mobile-service-provider-networks

if you again feel trouble on project customer satisfaction for landline please reply in that page and ask specific fields in project customer satisfaction for landline ....etc

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To get full information or details of sms on landline telephone please have a look on the pages

http://seminarsprojects.net/Thread-sms-through-landline

if you again feel trouble on sms on landline telephone please reply in that page and ask specific fields in sms on landline telephone ....etc

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to get information about the topic landline telemetryfull report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-telemetry?pid=54188&mode=threaded

http://seminarsprojects.net/Thread-telemetry ....etc

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