Ohio Tariff No 20

• Part-1 Preface
• Part-2 General Terms and Conditions
• Part-3 Service Charges
• Part-4 Exchange Access Services
• Part-5 Vacant
• Part-6 Central Office Services
• Part-7 Central Office Optional Features
• Part-8 Miscellaneous Services
• Part-9 Vacant
• Part-10 Vacant
• Part-11 Vacant
• Part-12 Listing Services
• Part-13 Public Telephone Services
• Part-14 Vacant
• Part-15 Vacant
• Part-16 Vacant
• Part-17 Vacant
• Part-18 Vacant
• Part-19 Unbundled Network Elements and Number Portability
• Part-20 Grandfathered Services
• Part-21 Access Services