Summary: This 9-page whitepaper explains the key features of the DNP3 protocol and how it can help in water/wastewater telemetry systems. Developed primarily for use in the power industry, the features of this 20-year-old open protocol that support water/wastewater SCADA systems include classification of field data, report by exception, time-stamped data, support for time synchronization, secure authentication, diagnostic information for each I/O point and communication to multiple masters.

This 7-page white paper examines the Power-over-Ethernet (PoE) standard, IEEE802.3af and the update to it, the IEEE 802.3at (PoE Plus). This technology provides power to difficult-to-reach areas, such as remote network switches, security cameras and outdoor WLAN access points.