A callpilot Mini is intended for connection to a Meridian 1, rather than a Norstar - what differentiates it from the Callpilot 150 that shares the same hardware platform is the firmware. So check the NVRAM card to see what version it is running. It should be a CP100/150 firmware, rather than CP Mini.
I'm not sure if a simple card swap will allow the device to be used with a Norstar.
Also, be aware that not all MICS/CICS firmware releases will work with the Callpilot, though it will work with more versions than the handbook claims.
The compatibility matrix says that you must use CP version 3.0 at a minimum with all MICS/CICS running 7.0 or 7.1, any version of CP100/150 firmware will work with all releases from 4.1 to 6.0 - it states that the Callpilot doesn't work with anything below version 4.1 . . . . Note that the CP can also be used with a 3x8 running DR5.1
Good luck