GraphCommunications 

Microsoft Graph Communications Client Core Library - This library builds on the Microsoft.Graph SDK to provide better support for the Communications APIs.

Microsoft Graph Communications Client Library - Common utilites for transport, logging, telemetry, state machines, argument validation, and OData.

Microsoft Graph Communications Client Library - The Communications stateful client base SDK. This package is meant to be used in conjunction with Microsoft.Graph.Communications.Calls or Microsoft.Graph.Communications.Calls.Media libraries.

Microsoft Graph Communications Client Library - The Communications Calling stateful SDK. Make, receive, and join calls with Microsoft Teams users. Create voice and video enabled assistant bots.

Microsoft Graph Communications Client Library - The Communications Calling stateful SDK Media extensions. This library allows developers to use the Calling SDK and gain direct access to the audio, video, screen sharing, and data streams. Note: You may not use this SDK to record or... More information

Microsoft Graph Communications Client Core Calls Library - Additional contracts for Communications Calls APIs not yet published to Graph v1.0.