How are voice and video communications prioritized in Avaya Aura?

In Avaya Aura, voice and video communications are prioritized primarily through the use of Quality of Service (QoS) measures. QoS is crucial for ensuring that time-sensitive data such as voice and video maintains clarity and real-time performance, which is essential for effective communication.

By implementing QoS, network administrators can allocate bandwidth and manage traffic to reduce latency, jitter, and packet loss. This ensures that high-priority applications like voice and video receive the necessary resources over other types of traffic, which may not require the same level of performance. The QoS policies applied might include prioritizing packets based on their type, managing congestion, and implementing different levels of service quality to various applications.

The other methods mentioned in the choices would not effectively address the specific needs of voice and video communication. For instance, reducing overall bandwidth usage might degrade the quality of calls and video streams instead of prioritizing them. Similarly, restricting access during peak hours could lead to frustration for users and doesn't specifically prioritize communications; it could ultimately limit their availability. Finally, while prioritizing voice and video over text-only channels makes sense intuitively, QoS provides a structured, standardized approach to manage all forms of communications based on their specific requirements and quality needs.