I know how you feel. And it becomes really hard when you have strong urge to call but somewhere in your mind, the NC rules. If I have understood the LoA a little bit, then all it says is to be happy and find joy in whatever you do. So I would suggest you to just close your eye and go into a light meditative mode and ask your subconscious that which one gives you more happiness. Either calling him or not calling him. Try to analyse that whether the calling part still have any restriction attached to it. Whether your mind is still having contradictory thoughts that he might not receive your call. If its so, then do not call him at all. But if you find that your instinct is so strong that you are 100%  sure that he will pick up the call and talk, then no matter what the others say, go give him a call.

​This is completely my advice which can be put into debate. So its upto you to decide now.