• Chapin Preface History
• Chapin M.P.S.C. No. 1R Basic Telephone Service History
• Chapin M.P.S.C. No. 2R Auxiliary Services History
• Chapin M.P.S.C. No. 6R Directory Assistance Service History
• Chapin M.P.S.C. No. 7R General Regulations History
• Chapin M.P.S.C. No. 13R Public Mobile Carrier History
• MECA, M.P.S.C. No. 23R Local Transport and Termination Service History
• MECA, M.P.S.C. No. 25 Intrastate Access Services History
• Chapin M.P.S.C. No. 31R Primary Basic Local Exchange Service History
• NECA, F.C.C. No. 5 Interstate Access Services History

NOTICE REGARDING TARIFFS FOR REGULATED SERVICES

For your convenience, copies of tariffs for services regulated by the Michigan Public Service Commission (MPSC) have been posted on this website on behalf of certain telecommunications service providers operating in the State of Michigan. These tariffs are on file with the MPSC and the filed tariffs are the official reference for tariff information. Although precautions have been taken to ensure that tariffs on this website are identical to the filed versions, undetected production errors may cause discrepancies to occur. In the case of any discrepancies, the official tariffs on file with the MPSC will prevail.