I understand you're curious about internet delivery and signal reach. Fiber can definitely support strong signals for cell towers if installed properly, even within a local network.
They’re likely different cables, yet they belong together in one bundle. Main fiber lines usually contain 96 strands (48 pairs), which then branch out into structures or limited zones—typically 6 or 12 pairs. Each pair can be assigned to a separate user. It’s common for providers like Spectrum to deliver the entire bundle to a site, using one pair for internet and another for T-Mobile. When damage occurs, the whole set often needs replacement. Even if most strands remain intact, repairs might involve cutting and installing extensions. A repair of 96 strands usually requires 4–8 hours once the skilled team arrives and has access. Ask someone nearby if drivers or heavy machinery cause more problems—most service interruptions are due to construction equipment like backhoes, especially when delays happen with buried cables.
For actual cell sites, fiber is often used as the primary link, while microwave links serve as a backup. Some towers have dedicated fiber connections, whereas others rely on Wi-Fi or point-to-point microwave links. If a tower is hard to reach, it may depend solely on microwaves. In your building, you probably don’t have a cell tower, and there’s likely no backup service for T-Mobile. Many structures use micro-nodes or distributed antenna systems (DAS) inside, which spread signals via coaxial cables to various floors. These antennas connect to a central hub that can accept fiber or Ethernet connections. The hub is usually housed in a shared room with the main internet equipment.
In our company’s headquarters, we have DAS for AT&T using Cox fiber and another for Verizon using Verizon’s own fiber. Neither system has a fallback option. We also buy dedicated fiber from Verizon and Lumen, plus cable internet and phone services from Cox. Even though Cox fiber enters the building, the fiber-to-coax conversion point is outside, serving the whole area. The way these DAS systems are set up matters, as they determine which connections remain reliable.
Sorry, I'll clarify that now. I live in a dedicated house with roommates. We have the 100-dollar half GB down plan for spectrum running through a single modem/router combo with 2 routers for each end of the house. We have what I assume to be our T-Mobile cell tower about 3 miles down the road from the house. (See image) I'd give you a city to look at it further, but internet and all. As for the driver or backhoe thing, I'll have to ask him over the weekend. I have asked him who keeps cutting these fibers and he says he has no clue. He's just called in to fix them when they happen. He basically gets no info and is just told where and when.
It seems the structure should include redundant systems. This approach might help Metro PCS save costs. The backup solutions could be slower for Tmobile clients and other secondary users. Since the fiber runs overhead, it’s likely affected by accidents like drunk drivers or falling trees. If buried, damage is most common during digging activities, except when a vehicle strikes a support structure.
When I reached out, the automated system informed me about a fiber cut. From past incidents, I expected it to be related to a drunk driver again. Regarding the lines being unavailable, I have no idea. It seems likely that the city still has telephone poles and numerous wires supporting the fiber network. As mentioned earlier, now that I can share the actual results, here’s how the situation differs between outages and normal operation. Both images were captured when the device wasn’t connected to Wi-Fi and was using its own service. Most people claim I’m “Being on Wi-Fi and not noticing.”
It's tough to claim you weren't using Wi-Fi while the speed test app displays LTE and MetroPCS clearly! No further comments needed on this point.