The ECP connects after the set-top box (STB) to provide feedback on various service quality parameters to a central site. It's designed to emulate an end-user changing channels on a STB via a built-in infrared (IR) transmitter. Service plan verification, channel switching and multiple measurements on service quality for each channel are reported to a central management console to give service providers insight into the viewer experience and confirm the availability of subscribed-to channels.
Also new for the ECP is the Video Quality Index (VQI), which is designed to scan all channels; identify common video impairments such as macro-blocking, tiling and freeze frame; then combine them into a single, integrated metric. Results are consolidated across all channels and remote sites.