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Voice Quality Testing on VoIP ATAs

Overview | Main Features | Buyer's Guide


With the growing requirements for voice quality testing within VoIP networks is a major concern is testing the VoIP network, VoIP phones, VoIP Softphones and the analog Telephone Adaptors (ATA) that will be used within the VoIP networks. The VoIP phones and ATA's must be free of noise and other hindrances that may cause a degraded voice quality when using this equipment.

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Assuring uninterrupted high quality voice within a network is critical irrespective of what type of network is carrying the voice. Testing these networks can become cumbersome, time consuming and quite costly. GL's VQuad™ with Dual UTA provide the solution for testing analog 2-wire interfaces (PSTN, ATA, Media Gateway). The Dual UTA supports 2 Analog FXO interfaces (RJ11) and provides Off/On- Hook, DTMF Dialing, Flash Hook, Tone Detection (Dialtone, Ringback, Busy, Fast Busy, SIT) and CallerID. The Dual UTA Analog interface supports two-stage dialing, IVR testing, Voice Quality Testing, Delay Measurements, and Echo Measurements. The product can be configured to automatically send/record a multitude of voice files and to perform VQT algorithms immediately after the voice file recording is complete.

The GL VQuad™ w/ Dual UTA FXO Analog option supports two analog ports that may be connected to the analog side of any ATA. The VoIP side of the ATA can be directly connected to the VQuad with VoIP option. Thus, the VQuad can support one or both sides of the ATA for call generation and traffic/voice analysis. Using the VQuad™ user-friendly GUI, the user can place calls to any desirable number as well as answer incoming calls in a manual or automated fashion. The VQuad™ can be configured manually to generate calls and send/record voice files or configured to automatically place calls and send/record a multitude of voice files to be used in the VQT algorithms. While in automode, the GL VQT may be configured to automatically perform the VQT algorithms immediately after the recorded voice file is complete. Each analog port associated with the VQuad may act independently (two different tests simultaneously). Each VoIP port associated with the VQuad may act independently (up to eight different tests simultaneously). Each analog/VoIP port may be configured for Time Triggering, Digit Triggering, or Frequency Tone Triggering (thus easily synchronizing the analog/VoIP ports with the other GL VQuad™ interfaces such as Wireless.

Additional Information

VQuad™ w/ FXO Analog Main Features:

  • Two Analog Ports per Dual UTA using industry standard RJ-11 connections.
  • Manual or Automatic operation of traffic generation and call control.
  • Remote Access for starting/stopping the tests along with retrieving results.
  • GL VQT Automatic Mode allows automatic execution of the VQT algorithms (PESQ LQ/LQO/WB).
  • Additional measurements include Clipping, Jitter, Latency, Noise and Signal Levels.
  • Round Trip Delay and One Way Delay Measurements as well as Echo Measurements
  • Results available in real-time or post-processing
  • Each Analog Port may be controlled independently for traffic and call control

Screen Shot of VQuad™ Main Window

Screen Shot of VQuad™ Manual Call Generation

Screen Shot of VQT Waveform/Spectral Viewer

Screen Shot of VQT PESQ Measurement Window

Screen Shot of VQT Measurement Results

Screen Shot of VQT Cumulative Statistics

Buyer's Guide:

Item No. Item Description
VQT010 VQuad™ Software (Stand Alone)
VQT013 VQuad™ with SIP (VoIP) Call Control
VQT015 VQuad™ with T1 E1 Call Control
  VQuad™ Miscellaneous
VQT204 GPS for Dual UTA
VQT030 Network Command Center (Multi-Node Command and Control Center for VQuad™ Systems)
VQT241 VQuad™ Dual UTA with Balanced, Analog FXO, PTT, and Phone Handset Interfaces
VQT242 VQuad™ Dual UTA Bluetooth option for controlling any Bluetooth device (Call Control and Audio)
VQT251 Dual UTA HD Next generation Dual UTA with FXO Wideband support
VQT252 Dual UTA HD – Bluetooth Option
VQT002 Voice Quality Testing (PESQ only)
VBA032 Near Real-time Voice-band Analyzer

* Specifications are subject to change without notice.

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