Paper Title
Single Channel Telecommunication

In today’s fast paced world, though wireless communication is at its peak, wired communication has still not vanished. This is because of the security, reliability and speed it offers. In the present system of landline telephony, each phone is individually connected to the telephone exchange and data communication is analog. This paper proposes a bus network manner of connection of these phones wherein data communication is done digitally instead of traditional analog communication. This not only reduces the cost of wiring but also the cost of maintenance at telephone exchange where huge amount of money is spent annually on cooling systems. Keywords - Digital communication, Telecommunication, Bus network topology, Voice encoder, CMX 638, Microcontroller Atmega8, Two Wire Interface (TWI)