Architecture of the calling subsystem. SIP, TURN, and PSTN services are... | Download Scientific Diagram
AN44 EcHo Plus (NEETS) for AV applications controlling electrical power sockets 230V | NETIO products: Smart power sockets controlled over LAN and WiFi
Biamp Impera ECHO PLUS control panel
If you haven't been to an Echo LAN/Meet-up, and you have the chance to: DO IT! Never heard anyone say they regretted it, but have heard many say they've regretted missing them.