A/337, “Application Event Delivery”Approved: 14 October 2025

This document specifies mechanisms for signaling the properties of applications, including their lifecycle states, and also mechanisms for delivering activation notifications synchronized with a time base, so that the actions of applications can be synchronized accordingly.

Download current version: A/337:2025-10, “Application Event Delivery”, 14 October 2025.

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/337:2019, “Application Event Delivery”, approved 30 April 2019. A component of A/337 is in the accompanying schema. This version of the Standard is normatively referenced in A/300:2019, A/300:2020, and A/300:2021.

Download A/337:2022-03, “Application Event Delivery”, and accompanying schema, 31 March 2022. This version of the Standard is normatively referenced in A/300:2022-04.

Download A/337:2023-03, “Application Event Delivery”, and accompanying schema, 28 March 2023. This version of the Standard is normatively referenced in A/300:2023-03.

Download A/337:2024-04, “Application Event Delivery”, 3 April 2024, and accompanying schema. This version of the Standard is normatively referenced in A/300:2024-04.

Download A/337:2024-04 Amendment No. 1, “MMT AET”, approved 14 October 2025.

Download A/337:2025-07, “Application Event Delivery”, 17 July 2025. This version of the Standard is normatively referenced in A/300:2025-07.