Ensure Clear, Consistent Voice Communication Over Satellite Networks

Welcome to the latest issue of GL's newsletter, offering insights into our Voice Quality Testing Solutions for Satellite Networks. As satellite communications continue to revolutionize global connectivity, ensuring high-quality voice transmission has never been more critical. Our solutions are specifically designed to meet the demands of modern mission-critical communication systems.

Voice Quality Testing Solutions for Satellite Communications

Overview

Satellite communication networks support a wide range of traffic—from commercial internet to government and defense communications. However, they are inherently prone to impairments such as high latency, jitter, packet loss, and limited bandwidth, which can significantly affect voice quality and user experience.

The GL Voice Quality Testing (VQT) solution measures these effects and helps operators improve network performance. GL’s vMobile™ hand-portable device, when connected to your mobile satellite phone or radio, provides reliable, repeatable tests to check clarity, delay, and speech quality over satellite channels, ensuring dependable communication for every use, from military operations to rural broadband services.

vMobile™ for Satellite Voice Testing

GL’s vMobile™ is a compact, portable device designed for end-to-end voice testing over satellite, mobile, and radio networks. vMobile™ connects directly to endpoint devices such as satellite phones or radios to place and receive live voice calls. This solution sends audio through the network and records audio at the other end for automated analysis of the network including the Voice Quality Mean Opinion Score (MOS) using GL’s VQT application which utilizes the POLQA (ITU-T P.863) algorithm.

By comparing reference and received audio, vMobile™ accurately measures delay, jitter, and speech quality, even under long-delay satellite conditions. It also supports testing with a wide range of audio files, including male and female voices, multiple languages, and varying tones—ensuring that the satellite network is evaluated for diverse real-world speech conditions.

Test data can be viewed locally or uploaded to GL’s WebViewer™ dashboard for centralized monitoring, performance trending, and report generation across multiple test locations.

Voice Quality Testing of Radios over Satellite

Voice Quality Testing of Radios over Satellite

Key Features

  • Supports all satellite phone and radio models via Bluetooth® and wired headset connections
  • Enables real-time performance monitoring of voice and data traffic
  • Provides detailed analysis of voice quality, frequency response, one-way and round-trip delay, P.56 power-level analysis, and network audio dropouts
  • Includes portable and rack-mounted equipment for different deployment environments including ground stations and remote locations
  • Utilizes POLQA (ITU-T P.863) and/or PESQ (ITU-T P.862) algorithms for accurate, standards-based voice quality measurement
  • Displays test results on Google Maps, enabling location-based analysis and identification of areas with poor voice or data quality

Use Cases

  • Defense and Military Operations: Ensuring reliable voice links over tactical satellite channels
  • Emergency Response: Verifying voice clarity during disaster or field operations
  • Rural and Remote Connectivity: Assessing VoIP quality over satellite broadband
  • Enterprise and Maritime Networks: Monitoring and benchmarking voice performance
  • Network Trials and Upgrades: Comparing pre- and post-deployment voice quality

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