Default TotalCallTime

Hy Guys

Thanks for help.
I need an information if possible:

I need to reset the TotalCallTime on some devices from Samsung. I try *#22558463# and i get de time call for ex: 2h0m0s, but how to reset this time call?

This is because i send devices to warranty reseller and if the device have more than 1h they donīt accept...

Thanks in advance for your help
Best Reguards