Cisco strongly recommends that you install a security agent to protect your servers against unauthorized intrusion. Cisco offers two security agent options: Cisco Security Agent (CSA) for Cisco CallManager and Management Center for Cisco Security Agent (CSA MC).
Check this document for more details:
Which Cisco IP telephony applications may I install on the Cisco CallManager server?
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...