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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To get more information about the topic Industrial Protection System Using Light Dependent Resistor please refer the page link below

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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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Japanese mobile telephone market.



Characterize the Japanese mobile telephone market.

The Japanese mobile market has shown a remarkable growth in the last decade, with more than 106.2 million 3G subscribers and 4.4 million 2G as of December 2009. The 3G diffusion rate accounts for 90%, followed by that of Korea and this implies the market is almost saturated. Another remarkable transformation is found in its usage: data communication exceeded voice services. Consumers use more often mobile phone as wirele ....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 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

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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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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 industrial protection system using light dependent resistor full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-industrial-protection-system-using-light-dependent-resistor ....etc

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