File Transfer using PSTN

Create your own File transfer application that uses normal PSTN as a medium to send and recieve files. For this purpose you will need a modem connected to your PC. You also will be required to study the necessary AT commands to make your modem dial an outgoing number and accept incoming connections. ATDT for dialling ATA for answering You can create your own packet structure and implement your own error checking and retransmission. This project is your chance to experiment with modems and serial ports. Also you can try to implement the core networking concepts you have learned. The project can be extended to support multiple files simulateneously. Also a chat application can be provided. All these magic is done by your packet structure.

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