I. INTRODUCTIONModern networking technologies are making important contributions to our information technology industry. Remote systems are recognized as one of the most important innovations in today's reality. The cheapest standalone device used for communication is Intercom. Almost all of your workplaces, as well as homes, contain these types of convenient products. These plans are mounted for security reasons so that the authenticated person is easily identifiable. However, a lot of development is needed in these types of technologies and devices. Most of the exploration, modeling and setup was done in the simulation procedure by the automation devices. In any communication technology, mobile devices are very common nowadays, and their network is based on special methods and systems. In Remote Intercom Access, 1.1 Project ObjectiveThe project objectives are given below:• Design a scheme for an automatic intercom system.• Finally, make life more comfortable with safety, quality, reliability and strength.1.2 Design ChallengesLayout related to a The actual process involves the overall performance of other functions. Designing such a system requires performing the following tasks simultaneously. • The circuit should have a new centralized command model that can access almost all remote nodes that enable it using DTMF decoding. • In an ideal system the separation between speakers and microphones should be maximized to optimize performance. • It should have some kind of intelligence built by it.. • It should generate alerts in critical application or real time operations. Examples: Monitoring of lar...... middle of paper ......phone number inserted as shown in Figure 14. Communication can be done using the microphone and speaker, and after communicating, if the owner presses 1 on the keypad, the decoder will decode the tone into a 4-bit number and the master controller will unlock the door as shown in Figure 15. If you press button 2 on the keypad, the trip circuit will be activated to disconnect the call as shown in Figure 16. Then the microcontrollers need to be reset by changing the logic on the RST pins, to make them ready for the next round. If button 2 on the keypad is pressed, the release circuit will be activated to disconnect the call, as shown in Figure 16. Some of the important functions and features for the development and design of this system are mentioned in this thesis to make sure that "remote intercom access" can work in the desired/specific environment.