Official: Control unit gives command to VVPAT that you print info related to button no. 3. Slip gets cut and falls in sealed box attached to VVPAT. Slip visible for 7 seconds to voter. VVPAT sends signal to Control Unit

Official: VVPAT only communicates with CU

J Khanna: the button nos. can change, how is that configured?

Official: No need for configuration. Everything stored in Control Unit