The administration of Avaya Aura® Communication Manager (CM) is primarily conducted through two officially sanctioned interfaces. The first is the Avaya Aura® System Manager (SMGR), which offers a centralized, web-based graphical user interface (GUI) for managing various Aura components, including CM endpoints. The second is the System Administration Terminal (SAT), a comprehensive command-line interface (CLI) that allows for direct and granular control over the CM configuration. The SAT is typically accessed via a secure shell (SSH) session to the CM server. Both SMGR and the SAT provide full capabilities to add, change, and remove H.323 endpoints.

B. Avaya Aura Device Services (AADS): This component is designed for managing SIP-based endpoints, particularly for dynamic configuration, firmware downloads, and contact services, not for provisioning H.323 stations within Communication Manager.

C. Linux Command Line at CM Server: The underlying Linux shell is used for server-level operating system tasks, such as file management, patching, and diagnostics, not for application-level administration of Communication Manager features like stations.

E. SMI Web-Interface at CM Server: The Service and Maintenance Interface (SMI) is a web interface on the CM server intended for maintenance tasks like backups, reboots, and software updates, not for routine endpoint administration.

1. Avaya Aura® Communication Manager Documentation, "Administering Avaya Aura® Communication Manager," (03-300509), Issue 13, November 2017.

Page 29, Section: "Communication Manager administration": This section explicitly states, "You can administer Communication Manager by using the following interfaces: • System Manager • System Administration Terminal (SAT)". This directly supports options D and A as the two primary administration interfaces.

2. Avaya Aura® System Manager Documentation, "Administering Avaya Aura® System Manager for Release 8.1.3," (NN43001-701), Issue 1.0, November 2020.

Page 439, Chapter: "Managing Communication Manager endpoints": This chapter details the procedure for using the System Manager GUI to "add, edit, duplicate, and delete Communication Manager endpoints," confirming that SMGR is a correct interface for the task.

3. Avaya Aura® Communication Manager Documentation, "Maintenance for Avaya Aura® Communication Manager...," (03-603578), Issue 1.0, November 2019.

Page 19, Section: "Communication Manager server web interface": This document describes the SMI web interface and its functions, which are centered on server maintenance and troubleshooting. While it provides a link to a web-based SAT (GEDI), its primary purpose is not endpoint administration, making it a less correct answer than the direct SAT interface.