The correct answer isOLT + ODN + ONU + eSight. The Campus OptiX (POL) solution includes the following key components:

OLT (Optical Line Terminal):Centralized device at the service provider's end for managing and controlling the network.

ODN (Optical Distribution Network):Passive optical splitters and fiber cables that distribute signals to end users.

ONU (Optical Network Unit):End-user devices that connect to the ODN and provide services like data, voice, and video.

eSight:Huawei's network management system that provides centralized monitoring, configuration, and maintenance for the entire POL network.

WhileU2000is another Huawei network management tool, it is more commonly used for carrier-grade networks rather than enterprise-focused solutions like Campus OptiX.