Oklahoma Natural Gas customers with speech or hearing impairments communicate with the company's customer service representatives over the telephone using special devices that transmit typewritten messages back and forth in real time. All requests for service, information inquiries, and/or questions about billing are handled between the customer and the company using special TDD equipment.

To connect directly to one of the Oklahoma Natural Gas TDD lines, speech and hearing impaired customers with TDD equipment should use the following numbers:

• Tulsa (918) 838-0302,
• Oklahoma City (405) 232-1486