Press Release

Telecom Test Solutiions

Linux and MS-Windows APIs for Custom Development of VQuad™ Applications

Gaithersburg, Maryland, USA - April 25, 2019- GL Communications Inc. a global leader in telecom test and measurement solutions, announced today its latest Linux and MS-Windows CLI and API Support for remote-access and custom development of VQuad™ Application on GL’s Dual UTA HD or Probe HD Hardware.

Speaking to the press Mr. Robert Bichefsky, Director of Engineering at GL Communications Inc said, “Open source is ubiquitous, it's almost unavoidable and Linux is the leader in open source. So, GL supports Linux Application Programming Interfaces (APIs) for our flagship products! Since our cards have unique features unavailable with other industry standard cards, customers can now build custom applications faster and cheaper.”

“All the functionalities of the hardware are exposed through the APIs. In addition, many software-based functions are available that ease even the most complex application development.”

He further added, “GL's Dual UTA HD and VQuad™ Probe HD, which supports all interfaces and telephony devices designed for testing HD voice using Bluetooth® Wideband, FXO Wideband and 4-wire Analog. VQuad™ Probe HD is an all-in-one self-contained VQuad™ with Dual UTA HD test instrument along with the necessary PC hardware with Windows® OS useful for portability and remote accessibility.”

Dual UTA HD Hardware Unit

Dual UTA HD Hardware Unit

VQuad™ Probe HD

VQuad™ Probe HD
(VQuad™, Dual UTA HD, and PC)


The VQuad™ functions that are generally available through APIs are as listed

  • Perform device configurations
  • Send and receive voice files on the configured devices
  • Load, Start, Stop VQuad Scripting
  • Perform call control functions (place call, receive call, disconnect)
  • Perform all traffic actions (send/detect tones/digits/files, send/record voice)
  • Perform voice quality, delay, noise, and echo measurements
  • Retrieve the all results and statistics
  • Monitor status of all remote VQuad™ nodes

The VQT functions that are generally available through APIs are listed

  • Connect/disconnect the client applications with a VQT Server
  • Perform VQT measurement with PESQ/POLQA algorithms
  • Start/Stop VQT Auto-mode operations
  • Capture individual VQT events to file in real-time
  • Retrieve VQT Statistics
  • Load VQT auto measurement configuration files

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