Local Calls. After an initial 10 minutes of pay phone use for a local call, a pay phone service provider may impose an additional per-minute charge for the use of the pay phone. The pay phone service provider shall post the initial charge and any additional per-minute charges as required under Regulation .04 of this chapter. If an additional per-minute charge is associated with a pay phone, the pay phone service provider shall ensure that the pay phone has: A verbal warning to a user that the initial paid call period is ending; and Instructions on how to continue the call. Incoming Calls. Except as provided in §C of this regulation, all pay phones shall receive incoming calls without charge. Blocking Incoming Calls. If approved by the Commission, a pay phone service provider may block incoming calls to a pay phone.