A university project in java for the lesson of Computer Networks . The porpuse were to make a serial communication programm in java . We were also asked two run our application (userApplication.java) and collect data from the server ,in two sessions which were at least 48 hours appart (session1.pdf,session2.pdf), for the graphs I used GNU octave software. Another task was to make a small bibliographic report (report.pdf) about technologies used in modems and/or serial communications.