CDR Report
Log in the PBX web interface, go to Reports > CDR Report
Set the Time to filter the call logs during the date duration.
Set other searching criteria,such as Call From、Call To、Talk Duration、Call Status and so on
Click Search.The filtered call logs will display.
Select the checkbox beside the cdr, click Delete button to delete the CDR.
Select the format in the drop-down list(CSV as default), click Generate button to download the CDR.