CDR File Types

Two types of CDR files exist in the CDR directory on the controller:

• .work — The active file that is being updated by the accounting system. The file is closed and renamed with the .dat extension when it attains its maximum size (16 MB) or it has been open for the maximum allowed duration (12 hours). You can back up and copy the .work file from the controller to a remote server.
• .dat — The inactive file that contains the archived account records. You can back up and copy the .dat file from the controller to a remote server.
  

  Note

  The CDR directory on the controller only has two files — a .work file and a .dat file. When the .work file attains its maximum size of 16 MB, or it has been open for 12 hours, it is saved as a .dat file. This new .dat file overwrites the existing .dat file. If you want to copy the existing .dat file, you must do so before it is overwritten by the new .dat file.