Don't see your trunk group defined under interface, maybe try first port with dial-peer and then with trunk group.
Use this command to define the trunk group. Then if you decide to configure an interface for the Network Side ISDN PRI feature, use a trunk-group interface configuration command to assign the interface to a defined trunk group.
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...