oval by the SASB itself. One of the most notable successes of the IEEE SA is the IEEE 802 family of standards. As of today, the IEEE 802 family of standards consists of more than 70 published standards with at least 50 more under development. IEEE 802 covers all things Ethernet, as well as local-area networks (LAN), wireless local-area networks (WLAN), metropolitan-area networks (MAN), and more. One section of the 802.1 group is the Time-Sensitive Networking (TSN) Task Group, which among other things, developed a precision time protocol (PTP) profile, IEEE 802.1AS. More information on TSN is provided in the upcoming section, "IEEE TSN," and "Chapter 7. Precision Time Pro- tocol", includes in-depth coverage of PTP profiles. One IEEE society, the Instrumentation and Measurement Society, formed the Precise Networked Clock Synchronization (PNCS) Working Group, also known as P1588, to work on precise time dis- tribution in Ethernet-based networks. The following section briefly discusses the contribution of these IEEE groups to time synchronization standards. 4.3.1 IEEE PTP In 2002, IEEE introduced the 1588 standard that defined a precision clock synchronization protocol to synchronize distributed clocks using a packet network. IEEE 1588, widely known as PTP, was designed to improve timing accuracy in local systems compared to other common protocols such as Network Time Protocol (NTP). The first approved version of IEEE 1588, published in November 2002, was titled "Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems." However, many people refer to the original 1588-2002 as IEEE 1588v1. IEEE 1588-2002 was later revised with the IEEE 1588-2008 standard, also referred to as IEEE 1588v2 or PTP version 2 (PTPv2). As of writing, the IEEE has added another version, SO there are three generations of the 1588 standard titled, "Standard for a Precision Clock Synchronization Pro- tocol for Networked Measurement and Control Systems": IEEE 1588-2002: The original edition IEEE 1588-2