With CallManager Express (CME), there is no native call detail record (CDR) available on the router. When using CME, you will have to use an External Server where you can export call records and other details. Here is a link which should help you better understand how this works:
But for my CUCM Express, still not displaying the Call History. Please see attached image below.
The Cisco Unified CME GUI provides call history information in the Reports > Call History window so that a network administrator can monitor for unknown callers or disallowed calling activities based on calling patterns.
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...