Wister residents are asked to call 911 to report fires instead of the old Fire Department number.
The old number was disconnected Wednesday, according to City Manager Linston Chronister.
Under the new system, firefighters will be dispatched by radio from the LeFlore County 911 center in Poteau. The center dispatches fire and ambulance calls and routes other emergency calls to the appropriate law enforcement agency.
Wister officials posted news of the change on the city marquee at the park.
Non-emergency calls still can be made to City Hall at (918) 655-7421.