This paper investigates using Time-Sensitive Networking (TSN) protocols, particularly from Audio Video Bridging (AVB), to support AES67 audio transport. By leveraging the IEEE 1588 Level 3 Precision Time Protocol (PTP) Media Profile, packet scheduling, and bandwidth reservation, we demonstrate that AES67 can be transported with AVB-equivalent quality guarantees while benefiting from Layer 3 networking advantages. The evolution of professional audio networking has increased the demand for high-quality, interoperable, and efficiently managed networks. AVB provides robust Layer 2 delivery guarantees but is limited by Layer 2 constraints. AES67 offers Layer 3 interoperability but lacks strict quality of service (QoS) guarantees. This paper proposes combining the strengths of both approaches by using TSN protocols to support AES67, ensuring precise audio transmission with Layer 3 flexibility. TSN extends AVB standards for time synchronization, traffic shaping, and resource reservation, ensuring low latency, low jitter, and minimal packet loss. AES67, a standard for high-performance audio over IP, leverages ubiquitous IP infrastructure for scalability and flexibility but lacks the QoS needed for professional audio. Integrating TSN protocols with AES67 achieves AVB's QoS guarantees in a Layer 3 environment. IEEE 1588 Level 3 PTP Media Profile ensures precise synchronization, packet scheduling reduces latency and jitter, and bandwidth reservation prevents congestion. Experiments show that TSN protocols enable AES67 to achieve latency, jitter, and packet loss performance on par with AVB, providing reliable audio transmission suitable for professional applications in modern, scalable networks.
