Interfacing and analysis of EI streams

Abstract

Most telephonic communication is carried out using E1 stream therefore there is a need to analyze this data on the computer system. Computers today, have applications in all kinds of communication systems, and by connecting an E1 stream to a computer, the analysis of a telephonic communication can be done in various ways. This type of interfacing will allow data of an E1 stream to be transmitted into a computer. Different types of analysis can then be done on this data. E1 stream will be interfaced to the computer through the USB port and the analysis of data and signaling channels will be done by writing software programs. In order to interface E1 stream to the computer, a circuit will be designed to convert HDB3 bipolar to unipolar and then decode HDB3 line code. Software will be written for frame alignment, recognition of frame, recognition and splitting of channels and graphical representation and analysis of each channel.