If LOS is red, there's an issue with the optical signal; contact your service provider. This user manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the HG8245C XPON/EPON Optical Network Terminal (ONT). The HG8245C is a high-performance device designed to provide broadband access, voice, and Wi-Fi services to home and small. It acts as the essential bridge, converting the high-speed fiber optic signal coming into your home or business into a format that your everyday devices can understand. This. PON (Passive Optical Network), as an access network technology, can implement fiber optic to the home, satisfying the high-bandwidth requirement of the "last kilometer" in the access layer network. 🧭 Future Updates. The unit connects to any network it finds, recognizes the type of network and performs tests using built-in thresholds that follow IEEE protocols and standards. Starting/stopping/restarting measurements from the OPM menu (see OLT Information Table) starts/stops/resets items in the OPM Summary. 1 Note 1. 1 Installation Precautions Do not near flammable or conductive items, high temperature, direct sunlight or moist environment, or on PC chassis, and check whether other home equipment placed around stability Check the cable line.