This document provides recommended practices for the ATSC Link-layer Protocol (ALP) standard specified by A/330.
Download current version: A/350:2024-04, “Guide to the Link-Layer Protocol”, 3 April 2024.
Previous Versions
There are multiple versions of this document. Please be sure to download the desired version. For amendments, the text includes a list of changes, the rationale for the changes, and compatibility considerations.
Download A/350:2019, “Guide to the Link-Layer Protocol”, approved 19 July 2019.
Download A/350:2022-03, “Guide to the Link-Layer Protocol”, 31 March 2022.
Download A/350:2023-03, “Guide to the Link-Layer Protocol”, 28 March 2023.
Subscribe to The Standard, our monthly newsletter, to stay up-to-date with ATSC news and events around the world.
Advanced Television Systems Committee, Inc.
1300 I Street NW, Suite 400E
Washington, DC 20005
Do you have questions about ATSC?
The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards and recommended practices for digital terrestrial broadcasting. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC also develops digital terrestrial broadcasting implementation strategies and supports educational activities on ATSC standards.
© 2025 ATSC