Case Study: Cactus Computer achieves seamless dual‑carrier mobile connectivity for Grand Prairie Water with Digi International TransPort WR21

Innovative Dual-Carrier Solution from Cactus Computer Eliminates Dead Zones, Keeps Operations Flowing for Grand Prairie Water

Cactus Computer, a Texas systems integrator with 28 years’ experience, was hired by the Grand Prairie Water Department to solve chronic cellular “dead zones” that disrupted laptops in a 61‑truck fleet. Lost connections were causing wasted time, reduced productivity, and slower emergency and maintenance response across the city.

Cactus built the Cactus 2x4GLTE: a dual‑router mobile hotspot using paired Digi TransPort WR21 routers and Cactus‑developed failover software to switch seamlessly between Verizon and AT&T in seconds. The solution eliminated dropout delays, let crews update work orders and receive assignments instantly, improved redeployment and repair speed, and delivered more reliable, cost‑effective field operations.

Cactus Computer

Jake Smith

President