This article outlines how a service provider is leveraging AmZetta zWAN to enhance VoIP traffic performance across distributed customer environments.

The deployment focuses on packet-based routing, bidirectional QoS, DSCP marking, and monitoring voice quality metrics to ensure reliable, high-quality voice communications.

Architecture Diagram (High-Level Topology)

The provider required packet-level processing rather than session-based flow handling to ensure:

zWAN handles packet-based routing by default for tunneled traffic, making it ideal for VoIP workloads.

The deployment required priority control for:

Priority classification was performed using:

This ensured audio streams were protected in both directions, which is critical for stable VoIP.

The provider validated DSCP handling using:

Example DSCP validation command:

The provider used zWAN TWAMP to track:

These metrics were used to validate real-time call quality under different bandwidth and failover conditions.

Voice sessions continued seamlessly during WAN link interruptions, thanks to:

This ensured uninterrupted VoIP during outages or poor network conditions.

Priority queues ensure voice packets are processed first, minimizing jitter and delay.

Markings set at the client or at either zWAN endpoint are preserved across tunnels.

Both outbound and inbound VoIP traffic receives correct classification and guaranteed bandwidth.

Admins gain insight into:

Fast, stable WAN failover protects live voice calls.

This deployment demonstrates how a service provider successfully optimized VoIP performance using AmZetta zWAN. With packet-based routing, enhanced QoS capabilities, detailed analytics, and reliable failover, zWAN ensures high-quality voice communication across distributed environments.