OLT stands for Optical Line Terminal. It is a device used in fiber optic communication networks to connect the service provider's network to the customer premises. The OLT acts as a central hub, managing and controlling multiple Optical Network Units (ONUs) or Optical Network Terminals (ONTs). It uses light signals to transmit data over long distances at high speeds. The combination of "🔍💡💻" represents the search for knowledge and solutions using the power of light and technology provided by the OLT.