Air Traffic Control

Overview

Air Traffic Control (ATC) depends on voice communications that are clear, reliable, and intelligible. Whether for ground-to-ground coordination between control centers or air-to-ground exchanges with pilots, voice quality is mission-critical.

Any degradation in audio performance — including distortion, latency, or intelligibility loss — can directly affect operational efficiency and, above all, safety.

In complex ATC environments, the communication chain includes multiple interconnected audio systems such as radios, gateways, recording systems, and switching equipment. Each element may introduce gain variations, noise, or signal processing effects, making objective end-to-end voice quality assessment particularly challenging.

In the transition toward IP-based and 5G-enabled communications for critical services, these challenges become even more significant. New network architectures can introduce latency, jitter, and audio processing variability, requiring objective and advanced measurement tools to ensure performance equal to or better than legacy systems.

Air Navigation Service Providers (ANSPs) need to:

• Accurately measure voice quality across the entire communication path
• Reproduce realistic operational scenarios without disrupting live traffic
• Identify degradations introduced at different points in the audio chain
• Ensure compliance with strict performance and safety requirements

As aN operator or service provider

In order to ensure consistency in use experience, Voice Quality testing is necessary in the lab to validate new devices, services (like VoLTE/VoNR), transcoding, SIP signaling, and codec negotiation and software upgrades. 

Opale Systems helps by offering controlled, repeatable test environments that validate voice performance during device and service development life cycle.

Opale Systems enables operators to simulate network conditions, measure quality metrics, and ensure service compliance from the lab up to live voice network monitoring