Check that the Publisher CM server has the following services running: "Cisco CDR Insert" and "Cisco CDR Analysis and Reporting Scheduler". If any of those services is stopped, please start them as they are required for CDR functionality.
Do you know what changes occurred on on your network? Were any upgrades done to CM servers? Any other changes to the CM servers?
Are there any errors in the System and/or Application logs on the CM Publisher?
When you log into CAR, are you able to search CDR records after ?
If so, the records are in the CDR database, but for some reason are not being loaded into the ART database.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...