Raymond Voet is a district court judge in Ionia, Michigan.  And he has a strict policy that if your cell phone goes off in the courtroom, he'll hold you in contempt of court.

And on Friday, during a trial, a phone went off in Voet's courtroom.  There was only one problem . . . it was HIS OWN PHONE.

And to his credit, he stuck by his rules . . . and held HIMSELF in contempt of court.  He hit himself with the standard $25 fine.

Voet says he just switched from a BlackBerry to a Windows phone, and he must've bumped the phone.

He said; "That's an excuse, but I don't take those excuses from anyone else.  I set the bar high, because cell phones are a distraction and there is very serious business going on . . . I broke the rule and I have to live by it."