How to develop a CDR generator

This content originally appeared on Modern Web Development with Chrome and was authored by Paul Kinlan

<p>My Final Year project covered Telecoms fraud. It included a call detail record generator.<p />I have had a fair few queries about this, mostly around how to develop a CDR tool.<p />Whilst I have only ever seen one CDR file. I did do a fair amount of research around the subject and I found out quite a bit.<p />Firstly, I choose to store the least amount of data that I could get away with. The data that I chose was:<ul></p> <li>Caller (source)</li> <li>Callee (destination)</li> <li>Call Type (local, national etc)</li> <li>Start Time</li> <li>Duration</li> </ul><p />With those 5 parameters you can work out the cost of the call and you can also work out a lot of other statistics.<p />To generate a CDR I had to configure a lot of models, high user, low users, business users etc. Each of these models had different parameters. The parameters were attributes such as:<ul> <li>The average cost and STDEV of a local call</li> <li>The average number and STDEV of local calls</li> <li>The average cost and STDEV of a PRS call</li> <li>The average number and STDEV of PRS calls</li> <li>The average cost and STDEV of a national call</li> <li>The average number and STDEV of National calls</li> <li>The times most likely to make a call: 8am -5 pm for a business as an example</li> </ul><p />When you have all these parameters you can get a random number generate to randomly pick values that fall within the bounds set by the model.<p />When the model generator is finished you should have a spread of customers that fit the model described.<p />Using this data you can then simulate your network in whatever manner you need.<p />How you determine the parameters of the model, is upto you because you know the data that you are trying to model.<p />

This content originally appeared on Modern Web Development with Chrome and was authored by Paul Kinlan