Okla. Stat. tit. 63, § 63-2803: Establishment of basic or sophisticated system

Every public agency or public safety agency within its

respective jurisdiction may establish a basic or sophisticated

system. The establishment of such systems shall be centralized

where feasible. Any system established pursuant to the Oklahoma

Emergency Telephone Act may include a segment of the territory of a

public agency. All systems shall be designed to meet the

requirements of each community and public agency served by the

system. Every system, whether basic or sophisticated, may be

designed to have the capability of utilizing at least three of the

four methods specified in paragraphs 3, 8, 9 and 11 of Section 2802

of this title, in response to emergency calls. In addition to the

number “9-1-1”, a public agency or public safety agency may maintain

a separate secondary backup number, and shall maintain a separate

number for nonemergency telephone calls.