800 Service is the furnishing of facilities for dial type telecommunications from or to a station associated with a 800 Service within the State of South Dakota in accordance with the terms and conditions and schedule of charges specified in this Price List. The rates and charges set forth in this Price List are in payment for the service furnished between the calling and called stations. The rates set forth in the Price List are for a connection of one minute. Messages are billed in increments of tenths of a minute, with any fraction of a minute rounded up to the next tenth of a minute before calculation of the charge for the call. A minimum 30 second charge is applicable on each message.