Azure SDK Review - [Stable SDK for ACS Call Automation]

New SDK Review meeting has been requested.

**Service Name**: ACS Call Automation
**Review Created By**: Anton Samson
**Review Date**: 05/21/2025 02:05 PM PT

**Release Plan**:[](https://web.powerapps.com/apps/821ab569-ae60-420d-8264-d7b5d5ef734c?release-plan-id=)
**Hero Scenarios Link**: Not Provided
**Architecture Diagram Link**: Not Provided
**Core Concepts Doc Link**: Not Provided
**APIView Links**: .NET, Javascript,

**Description**: We are looking to release our public preview for the new Teams Phone Extensibility functionality in ACS Call Automation.

The interface remains the same but we have added support for a new identifier for this use case, TeamsExtensionUser.

Detailed meeting information and documents provided can be accessed [here](https://web.powerapps.com/apps/f0a98ca4-117c-4d4b-a06a-3e2cdfe46753?view=edit&event=8fa42024-862b-f011-8c4c-6045bd06bb0b)

Start with the linked SDK review meeting information and the ACS Call Automation release details. Review the public-preview proposal, including the TeamsExtensionUser identifier and the provided APIView links, then determine the review requirements. Done means the stable SDK review is completed with the required supporting information and any follow-up recorded.

Written by the indexing model from the issue text.