Hi Hussan,
Are you checking the Publisher or the Subscribers for CDR data?
Subscribers send CDR data to the Publisher where they are stored.
As long as you have enabled the CDR service on ALL nodes, you can check that the data is being sent by one of the following methods:
1. Setup a billing server and see if any data is received. (e.g. a basic FTP server or you could use our TIM Plus or TIM Enterprise product)
2. Run a report within the built in reporter for the period required.
3. Export the data to a CSV file for the period required.
Hope this helps.
If you would like any information on our call accounting and billing products see our microsite www.tri-line.com/cisco