As you mentioned both North Carolina and Indiana are both members of the Drivers License Compact (DLC) thus once you have been convicted of the speeding offense you were ticketed for in the Indiana their courts will send this information to the NC Department of Transportation (DOT).

Once the NC DOT turns this information over to their Division of Motor Vehicles, which keeps drivers' records, it should be placed on your driving record according to the Driver Handbook which talks about out of state convictions and how they are listed on your driving record.

We have heard that points are only assigned for convictions occurring in state the state of North Carolina however since laws can be changed or updated check with the NC DMV to find out for certain if points can or will be assigned for your out of state Indiana speeding ticket.