What will I need to do to prepare for the Oklahoma 918 / 539 Area Code Overlay?
In addition to dialing the area code + telephone number for all calls, you also will need to: • Update any preprogrammed seven-digit telephone numbers in your phone to include the area code, as well as any text or email alert services. • Reprogram all services, automatic dialing equipment, or other types of equipment that are programmed with a seven-digit telephone number to include the area code. Some examples are life safety systems, fire or burglar alarm and security systems, security gates, speed dialers, call forwarding settings, fax machines, Internet dial-up numbers, voice mail services, and similar functions. • Check your websites, business stationery, advertising materials, personal checks, contact information, and your ID tags to ensure the area code is included.
