SDN: Software-defined network; an architecture that aims to make networks agile and flexible. The goal of SDN is to improve network control by enabling enterprises and service providers to respond quickly to changing business requirements.
OSP: Outside plant; any physical cabling, equipment, and infrastructure for a telecommunication network which is located between two demarcation or customer points.
OLT: Optical line termination; a device which serves as an endpoint of a passive optical network, typically found at a service provider’s central office.
ONT: Optical network termination; sometimes referred to as an ONU (optical network unit). A device which serves as an endpoint of a passive optical network, typically found on customer premises.
Light path: Refers to the physical route a signal takes in connecting a telecommunications network from terminal to terminal point.
EPON: Ethernet passive optical network; a passive optical network which transports Ethernet as the data link layer. See ITU-T recommendation G.9801 for more detail.
GPON: Gigabit passive optical network; a passive optical network which can transport not only Ethernet, but also ATM and TDM traffic. Typically consists of two main active transmission equipments - OLT and ONU/ONT. See ITU-T recommendation series G.984.1 - G.984.6 for more detail.
Geospatial platform: A portfolio of common geospatial data, services, and applications hosted on a shared infrastructure.
HitL: Human in the loop; the theory that suggests the necessity of including a human
