Avaya Aura® Application Enablement Services (AES) is a server-based software solution that provides an enhanced set of telephony APIs for application developers. Its primary function is to enable Computer Telephony Integration (CTI). The core supported standards include the Telephony Server API (TSAPI), which is Avaya's implementation of the ECMA Computer Supported Telecommunications Applications (CSTA) standard, and the Java Telephony API (JTAPI), a standard Java-based interface for CTI. Therefore, CSTA, TSAPI, and JTAPI are the fundamental standards and APIs supported by AES for building third-party applications.

B. Media Stream Reservation Protocol (MSRP): This protocol is used for session-based instant messaging, not for the CTI call control functions that are the primary purpose of AES.

E. Far End Camera Control (FECC): This is a protocol used within video conferencing standards (like H.224/H.281) to control a remote camera, which is outside the scope of core AES CTI functionalities.

1. Avaya Aura® Application Enablement Services Overview and Specification, Release 8.1.3, Issue 1, December 2020.

Page 8, Section: Application Enablement Services APIs: "Application Enablement Services provides an open, standards-based and extensible set of APIs... These APIs include Telephony Services API (TSAPI), Java Telephony API (JTAPI), and Web Services."

Page 9, Section: Telephony Services API (TSAPI) Service: "The TSAPI Service is an Avaya implementation of the Computer Supported Telephony Applications (CSTA) Phase III standard, as specified by ECMA International." This statement directly supports answers A and C.

Page 9, Section: Java Telephony API (JTAPI) Service: "The JTAPI Service provides a Java-based programming interface to the telephony features and capabilities of Communication Manager." This supports answer D.

2. Administering Avaya Aura® Application Enablement Services, Release 8.1.3, Issue 1, December 2020.

Page 11, Chapter 2: AE Services Management Console: The main menu of the administration interface lists key services, including "CSTA," "TSAPI," and "JTAPI," confirming these are the primary, configurable components.

Page 109, Chapter 9: TSAPI link administration: This chapter is dedicated to the configuration of TSAPI links, demonstrating it is a core supported service.

Page 117, Chapter 10: JTAPI Service: This chapter details the configuration of the JTAPI provider, confirming its support.