I am trying to do a project for data analysis based on the details of calls stored in Call Details Record (CDR) of telecommunications industry. It will take some time to obtain the real data, and before that I want to work on some sample data. Is there any source which provides a very simple CDR database?
I would prefer voice calls but it can be database of other actions like GPRS usage. If CDR is not available anything related to telecom is OK.