Miss. Code Ann. § 25-53-117

No agency shall be permitted to obligate the state to any vendor source for a telecommunications system of any kind. All transactions dealing with a telecommunications system shall be conducted through the bureau, and any vendor found in violation of this policy may be prohibited from bidding on such systems for a period of time commensurate with the severity of the violation. Provided, however, that this period shall not exceed twenty-four (24) months.