End-to-End Voice Quality Testing Across Modern Networks

21st, Aug 2026

Voice services across any Mobile network, Radio network, Satellite, PSTN, VoIP, and virtually any network which includes voice require consistent speech quality. Network impairments such as delay, jitter, packet loss, noise, clipping and codec-related distortions can degrade the end-user experience, creating a need for objective and repeatable end-to-end voice quality testing.

GL Communications' Voice Quality Testing (VQT) solutions support POLQA® (ITU-T P.863) to objectively measure and analyze speech quality across diverse communication networks. Integrated with vMobile™, VQuad™, and Message Automation & Protocol Simulation (MAPS™), GL's solutions support voice quality testing using portable devices for Drive and Walk testing as well as lab-based solutions. These GL solutions provide end-to-end testing with centralized analysis and network test automation. GL’s VQT solution also supports PESQ (ITU-T P.862).

Voice Quality Testing Across Modern Networks

Measure End-to-End Voice Quality

GL's VQT software compares a Reference voice file with a Degraded voice file received through the network to objectively assess speech quality. It supports POLQA® v2.4 and version 3 for enhanced assessment of VoLTE, 5G and OTT voice services, as well as the legacy PESQ algorithm.

Key capabilities:

  • Narrowband (NB), Wideband (WB), and Super-Wideband (SWB) analysis
  • Full Band Audio analysis with POLQA® version 3
  • Assessment of codecs including EVS, OPUS, AAC, and LC3
  • POLQA® MOS, E-Model, Signal Level, SNR, Jitter, Clipping, Noise Level, and Delay
  • Manual and automated analysis with graphical and tabular results
  • Optional AutoVQT™ POLQA® v2.4 solution for analyzing thousands of voice files in mere minutes
  • Command Line Interface and API support

Voice Quality Testing in the Field with vMobile™

GL's vMobile™ is an ultra-portable solution for automated voice and data quality testing of mobile phones and mobile radios. It supports drive, walk, field, and laboratory testing across mobile and satellite communication networks.

Key capabilities include:

  • Automated POLQA® voice quality testing
  • All mobile phone networks supported including 3G, VoLTE, VoWi-Fi, and 5G
  • Radio testing supported with automated PTT with connectivity to any radio
  • Bluetooth® connectivity for mobile phones and 4-Wire Analog/PTT for mobile radios
  • Voice quality testing over satellite networks
  • Automated call control, One-Way and Round-Trip Delay measurements, Audio Dropout, Call Fail, and Call Drop analysis
  • Integrated GPS for drive and walk testing
  • Indoor Tracking System when GPS is unavailable
  • Centralized results through WebViewer™

GPS information associated with test results can be plotted on Google Maps using WebViewer™, helping users correlate voice quality with geographical location.


Automate End-to-End Voice Quality Testing with VQuad™

GL's VQuad™ automates voice quality testing across wireless, VoIP, TDM and Analog networks. Programmable scripts automate call control, voice transmission and recording, measurements and result collection for repeatable end-to-end testing.

VQuad™ supports:

  • Automated call control, voice transmission, and recording
  • POLQA® voice quality assessment
  • One-Way Delay and Round-Trip Delay measurements
  • Signal-to-Noise Ratio, signal level, and Audio Dropout analysis
  • Automated scripting and distributed testing
  • Integration with vMobile™ for field-to-lab testing
  • Centralized results through WebViewer™

vMobile™ and VQuad™ can work together, with vMobile™ deployed in the field and VQuad™ operating in a laboratory or static location, providing flexible end-to-end testing across distributed environments.


Centralize and Automate Voice Quality Analysis

GL's WebViewer™ provides centralized browser-based access to voice quality results stored in the Central Database, while AutoVQT™ automates high-volume POLQA® analysis.

WebViewer™ provides:

  • Centralized access to POLQA® and PESQ results
  • Tabular and graphical result displays
  • Export results and statistics or custom output reports to *.xls, *.csv, and *.pdf file formats
  • Customized report generation with result statistics, tabular data, bar graphs and line graphs
  • GPS-based plotting of drive and walk test results on Google Maps
  • Remote access and export of results for further analysis

AutoVQT™ provides:

  • Automated analysis of thousands of voice files within minutes
  • POLQA® version 2.4 with NB, WB, and SWB analysis
  • MOS, Delay, Jitter, Packet Loss, and additional measurements
  • Integration with vMobile™, VQuad™, Voice Analysis Tool (VAT™), MAPS™, and T1 E1 Analysis platforms

Why Choose GL's Voice Quality Testing Solutions?

  • Integrated field, laboratory, automated and centralized voice quality testing
  • Supports 5G, VoLTE, VoIP, wireless, TDM, PSTN, mobile radio and satellite networks
  • vMobile™ for portable drive, walk and field testing
  • VQuad™ for automated end-to-end and distributed testing
  • WebViewer™ for centralized analysis and geographical visualization
  • AutoVQT™ and MAPS™ for automated and high-volume testing
  • Comprehensive voice quality, delay, audio and network performance measurements

Applications

  • 5G, VoLTE and VoIP voice quality testing
  • Mobile network benchmarking and optimization
  • Drive and walk testing
  • Mobile phone and device testing
  • Mobile radio with PTT testing
  • Satellite voice communication testing
  • End-to-end speech and voice codec quality assessment
  • Automated laboratory, regression and protocol testing
  • Network troubleshooting and performance analysis

Whether benchmarking 5G and VoLTE networks, validating VoIP services, performing field tests, testing mobile radio and satellite communications, or automating large-scale voice quality analysis, GL's integrated Voice Quality Testing solutions help engineers objectively measure speech quality, identify impairments, automate testing and centrally analyze results.


Why GL Communications?

  • 40+ years of expertise in voice testing solutions
  • Comprehensive voice, video, data and protocol testing solutions
  • Support for analog, TDM, VoIP, wireless, IP, 5G and defense networks
  • Solutions for laboratory, field and distributed network testing
  • Protocol expertise across hundreds of telecom and IP protocols
  • Scalable automated testing and centralized analysis solutions

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