Which Avaya product is primarily responsible for call processing in the Avaya Aura system?

Avaya Aura Communication Manager is the central element in the Avaya Aura system responsible for call processing. It handles the management of voice calls, implementing features such as call routing, control, and the setup for both traditional and VoIP communications. This product effectively integrates various communication modes and systems, making it essential for the operational effectiveness of the entire Avaya Aura architecture.

While other components play significant roles in the Avaya ecosystem, they serve different functions. The Avaya Aura Media Server, for example, is primarily used for media handling, including conferencing and multimedia services, rather than direct call processing. Avaya Aura System Manager is focused on administration, configuration, and monitoring of the entire system, which is also distinct from processing calls. Lastly, Avaya Aura Session Manager is utilized for managing and routing SIP sessions, which enables the interconnectivity of different components, but again, it is not the main call processing entity like Communication Manager. Thus, it is clear why Communication Manager is positioned as the primary product for call processing within the Avaya Aura system.