Wrong area and time.
In 1968, with the goal of single handingly reforming the Arkansas prision system, John F'n Kerry secretly entered the Wakefield State Penitentiary under the code name 'Brubaker'. Upon becoming warden of the prison, one of his first acts of bravery was to discontinue the use of a torture method commonly referred to as 'a phone call'.
Having been hooked up to a TA-312 field telephone with a crank ringer, I can guarantee you that it would smart if somebody hooked it to your nuts. When several of us were hooked up during a little initiation ceremony in one of my old units, it was just hooked to our arms. When the guy on the phone cranked it, it was quite uncomfortable.