A/351, “Techniques for Signaling, Delivery and Synchronization”Approved: 3 April 2024

This document provides recommended practices for the ATSC 3.0 Signaling, Delivery, Synchronization, and Error Protection standard as specified in A/331. The document contains recommendations for broadcasters on the usage of the ROUTE and MMTP protocols and their associated technical capabilities in support of different Service delivery scenarios. In addition, transmission-related guidelines are provided on a variety of other functions and mechanisms as defined in A/331 including Service and audio language signaling, advanced emergency information, Staggercast, and the mapping between Service delivery and lower layer transport.

Download current version: A/351:2024-04, “Techniques for Signaling, Delivery, and Synchronization”, 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/351:2019, “Techniques for Signaling, Delivery, and Synchronization”, approved 28 August 2019.

Download A/351:2019 Amendment No. 1, “appContextID”, approved 20 January 2020.

Download A/351:2019 Amendment No. 2, “appContextID”, approved 15 February 2021.

Download A/351:2021, “Techniques for Signaling, Delivery, and Synchronization”, 15 February 2021. This document is a rollup of Amendments No. 1 and No. 2 to A/351:2019.

Download A/351:2022-03, “Techniques for Signaling, Delivery, and Synchronization”, 31 March 2022.

Download A/351:2023-03, “Techniques for Signaling, Delivery, and Synchronization”, 28 March 2023.