TELEPHONE OPERATED CALLING SYSTEM

ABSTRACT
This Telephone Operated Calling circuit is used where persons have to be called or signaled. When you need to call a person amongst many standing outside a cabin, just lift the telephone handset off the cradle and press the respective number. The number of the person called will be displayed and a bell will sound to inform the person that it is his turn. This circuit is very useful for doctors for calling patients, in banks and in various other situations.


MINI PROJECT ....etc

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weight operated material handling vechile

Material handling equipment is mechanical equipment used for the movement, storage, control and protection of materials, goods and products throughout the process of manufacturing, distribution, consumption and disposal. The different types of material handling equipment can be classified into four major categories:transport equipment, positioning equipment, unit load formation equipment, and storage equipment. ....etc

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CALLING NUMBER IDENTIFICATION USING CALCULATOR

Description: Dial-up users need to install the resurgence Caller ID client software; The user needs to be opened in the local switch busy transfer business; Access servers need to have a caller identification service; Called user receives the information of the gatekeeper, the client automatically pop up a dialog box prompts the user to have telephone access, and access user phone numbers, by the user to decide whether to answer the call; Called the user clicks on the pop-up dialog box client A ....etc

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how can I get the source code of emergency calling project. ....etc

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ABSTRACT

This project is used to control device from the remote place through DTMF. DTMF stands for . This is the latest technology used in telephone dial. The program waits for the ringing of the telephone. When the telephone rings the ring detector detects the ring

When the phone rings it should be cut off. This is made possible through ON\OFF hook controller. When there is a ring outputted to the ON\OFF hook Control circuit .If the phone line is connected means the device can be controlled through phon ....etc

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