What role do Avaya Aura gateways serve in communication systems?

Avaya Aura gateways play a crucial role in communication systems by connecting IP telephony networks with traditional Public Switched Telephone Networks (PSTN). This function is essential as it allows for seamless communication between modern digital and IP-based systems and legacy telephony systems. By acting as a bridge, gateways enable users to make and receive calls from both IP phones and traditional analog devices, thus facilitating interoperability.

This connection is vital in hybrid environments where organizations might be transitioning from PSTN to VoIP services, allowing for greater flexibility and cost savings while maintaining existing infrastructure. The gateways also handle various tasks such as media conversion, signaling translation, and ensuring Quality of Service (QoS) for voice communications, which enhances the overall functionality and performance of the communication system.