Steelmaking is, in part, a logistics challenge. Cranes receive wireless instructions about which coil to pick up, where to move it, and when, while a scheduling system tracks thousands of coils in a single building. If wireless connectivity falters, even briefly, an automated crane stops — and lost production follows.
The problem wasn't simply fixing wireless issues. It was knowing what was happening on the network in real time and over time, independent of the vendors whose hardware was generating that data.
"We wanted something that could assess our network and look at wireless without coming from the hardware manufacturers themselves. The manufacturers do a specific function very well, but we wanted something that could be a judge and jury of the environment without having to trust the manufacturer of the gear."
With Cisco managing much of the wireless infrastructure, the IT team was dependent on a single view. If Cisco's dashboards reported network health but a crane operator reported problems, who was right? The mill needed an independent answer — across a large operation running a variety of endpoint devices deployed by its Control System, Field Service, and Engineering teams.
Truth at the Edge
The mill deployed 7SIGNAL's sensors throughout its facilities, placing independent monitors that collect data from the perspective of the end-user device, not the access point. The result is a view of wireless performance that no equipment vendor can provide for its own gear. The monitors are patented RF hardware appliances deployed on-site as a vendor-agnostic monitoring layer, with a single sensor capable of monitoring up to six access points continuously.
Proactive and Reactive, Simultaneously
The mill's wireless manager runs 65 to 70 reports weekly. Some are reactive, helping the team pinpoint root causes when something breaks. Others are predictive, tracking trends that surface problems before they hit production.
"If you set up the 7SIGNAL tool to do events and alarms, then you're commissioning that tool to be almost proactive. Those reports offer trends to help predict where problems are. We can set thresholds."
The sensor data lets the team catch access points that look functional in Cisco Prime Infrastructure but are quietly dropping clients — a critical distinction in an environment where a dropped connection can stop a crane.
Eliminating Finger-Pointing
In large IT organizations, wireless problems trigger a cycle of blame between teams. Without objective data, each group points elsewhere and resolution drags out.
"With 7SIGNAL, there is far less finger-pointing. 7SIGNAL tells you what's wrong."
Armed with evidence, the team directs the right people to the right fix without debating — and minutes matter when a downtime event can become a multi-hour production lapse.
Validating Coverage Without Waiting for Problems
Before 7SIGNAL, validating coverage meant sending a technician into the mill with a spectrum analyzer and a laptop to wait for a problem to materialize. The sensors turned that into a continuous, data-driven process.
"I use 7SIGNAL for base-level testing. It helps us define coverage without having to do reactive troubleshooting. Before, I'd tell a technician to go out with a spectrum analyzer and laptops and wait in the mill for a problem to happen. It's a proactive approach now."
Why 7SIGNAL: Support That Works
Asked why the mill hasn't evaluated competing products, the manager points to the technology and to support that is categorically different from what large vendors provide.
"Whenever we have a bug, 7SIGNAL is immediately on it; they have the right people on the phone, and they'll get back to us within an hour. For manufacturing, this is the best Wi-Fi monitoring software."
By contrast, the mill spends up to $1 million annually on other wireless vendor support and has cases that have stayed open for 18 months.
"At 7SIGNAL, I talk to high-level, knowledgeable people about RF, and they look at what I need and solve it. They'll explain wireless to people who don't know wireless. You don't often see that kind of effort to make a customer successful."
