The IEEE Std 1901-2010 is a standard for high speed (up to 500 Mbit/s at the physical layer) communication devices via electric power lines, often called broadband over power lines (BPL). The standard uses transmission frequencies below 100 MHz. This standard is usable by all classes of BPL devices, including BPL devices used for the connection (<1500m to the premises) to Internet access services as well as BPL devices used within buildings for local area networks, smart energy applications, transportation platforms (vehicle), and other data distribution applications (<100m between devices). The IEEE Std 1901-2010 standard replaced a dozen previous powerline specifications. It includes a mandatory coexistence Inter-System Protocol (ISP). The IEEE 1901 ISP prevents interference when the different BPL implementations are operated within close proximity of one another. To handle multiple devices attempting to use the line at the same time, IEEE Std 1901-2010 supports TDMA, but CSMA/CA (also used in WiFi) is most commonly implemented by devices sold. The 1901 standard is mandatory to initiate SAE J1772 electric vehicle DC charging (AC uses PWM) and the sole powerline protocol for IEEE 1905.1 heterogeneous networking. It was highly recommended in the IEEE P1909.1 smart grid standards because those are primarily for control of AC devices, which by definition always have AC power connections - thus no additional connections are required. Status The IEEE P1901 Working Group started in June 2005. More than 90 organizations contributed to the standard. Half of the organizations were from US, a quarter from Japan and the last quarter from Europe. IEEE 1901 completed a formal standard IEEE Std 1901-2010 published in December 2010. The working group which maintains and extends the standards is sponsored by the IEEE Power Line Communication Standard Committee (PLCSC). IEEE Std 1901-2020 has been published in January 2021. Adoptions ITU-T G.9972 The IEEE 1901 ISP coexistence protocol was extended to support the International Telecommunication Union's family of home networking standards known as G.hn, and adopted by the ITU-T as Recommendation ITU-T G.9972. SGIP The Smart Grid Interoperability Panel (SGIP) initiated by the U.S. National Institute of Standards and Technology (NIST) mandates the implementation of the IEEE 1901 ISP coexistence mechanism (or ITU-T G.9972) in all technologies operating over power lines. NISTIR 7862: Guideline for the Implementation of Coexistence for Broadband Power Line Communication Standards The IEEE 1901 standard is included in the SGIP Catalog of Standards DLNA In 2012 the Digital