Most failures tend to be in the OSP, and are caused by improper installations which can be caused by microbends, splices, connector damage, and improper fiber management. Splitter failures can also be intrinsic, which we'll address. The actual issue is that none of the ONTs (which are identical) actually "handshake" the fiber (the fiber LED is ON, but it is never really connecting (the internet nor the VoIP works). After connecting the fiber directly, I get an internet connection in ~10s, as usual. I have looked at the. Optical splitters in the outside plant (OSP) are used mostly in passive optical networks (PONs) for fiber-to-the-user (FTTx) networks, and are often overlooked as failure points. In this article I focus on a few basics of optical splitters, their applications, typical causes of failures, and how to. Are you experiencing issues with your internet connection, and you suspect that your Optical Network Terminal (ONT) box might be the culprit? Resetting your ONT box can often resolve connectivity problems, but it's essential to do it correctly to avoid any unintended consequences. Therefore, being able to identify and fix these issues is paramount in ensuring the longevity and efficiency of the network. This guide will walk you through diagnosing and resolving common.