Sam Rayburn Tollway dispatch zones kill callback speed
A 3-truck Frisco plumbing shop typically covers Stonebriar to Little Elm, east to Plano, north to Prosper. That's a 25-minute drive from Newman Village to The Colony during off-peak, 45 minutes at rush hour on Preston Road. You take a no-hot-water call at 7am while driving southbound on the Dallas North Tollway toward a warranty inspection in The Trails. By the time you pull over at Frisco Square and call back, the homeowner booked with a McKinney outfit that answered on the first ring. Narlo replies within 10 seconds via SMS—dispatcher tone, no hold music—qualifies whether it's tank or tankless, and books the slot before you hit FM 423. The callback race ends.