What is a major concern regarding RFoG and FTTx systems?

A major concern regarding RFoG (Radio Frequency over Glass) and FTTx (Fiber to the x) systems is indeed related to the provision of AC power to the Optical Network Terminal (ONT) at customer premises. This concern arises because the ONT is a crucial component that converts the optical signal from the fiber into an electrical signal that can be used by customer devices.

Depending on the installation and design of the network, providing the necessary AC power can become a logistical challenge. In some cases, it may require additional infrastructure to ensure that power is consistently available at every ONT location. This situation can complicate the installation process, increase operational costs, and create potential points of failure if power is not reliably supplied.

While other factors like installation timeframes, equipment costs, and signal loss do play significant roles in the deployment of these systems, the provision of AC power directly impacts the functionality of the ONT and, by extension, customer experience. Thus, addressing the power supply issue is paramount to ensuring the effective operation of RFoG and FTTx systems.