Overtime TO's

[Texoma_LJ]

Got into a discussion here at work and dont have a rule book handy. I am curious about Time-outs in Overtime, I remember reading that overtimes not used from the final regulation period carries over into the overtime period, but do unused timeouts jsut accumulate in OT, or is there just one (for all OT periods played) plus remaining TO's. I cant remember off hand how TO's work in OT period.