Overview

Assuring uninterrupted high quality voice within a network is critical irrespective of the type of network carrying the voice. Testing these networks can become cumbersome, time consuming and quite costly.
GL provides the solution for testing 2-wire and 4-Wire WB Analog interfaces using GL's VQuad™ and  Dual UTA HD.

VQuad™ with Dual UTA HD provides a complete automated network testing solution. This includes 2-wire WB Analog FXO interfaces (RJ-11) and, when coupled with the GL VQT, provides the necessary voice quality measurement and analysis tools.

Dual UTA HD 2-Wire FXO and 4-Wire Analog supports both Wide Band (WB) and Narrow Band (NB). 2-Wire Analog FXO can connect to any 2-wire interface (PSTN, ATA, Gateway) anywhere. Dual UTA HD 4-wire Analog connects to Balanced (headset -mic/speaker), RJ22 (phone Handset), PTT (Push to Talk) connecting to any mobile radio (DoD, Emergency Services, Government) and to any mobile phone, the phone will recognize the Dual UTA HD as a headset.

The analog ports may be connected to any U.S or European PSTN and, using the user-friendly VQuad™ GUI, the user can place calls to any desirable number as well as answer incoming calls in a manual or automated manner. The product can be configured manually to send and record voice files or configured to automatically send/record multiple voice files to be used in the VQT algorithms. In addition, the VQuad™ can send and detect DTMF digits while the call is established. This allows two-stage dialing as well as path confirmation.

The VQuad™ with Dual UTA HD also adds the functionality for Round Trip Delay and One Way Delay measurements. The Dual UTA HD also support Echo measurements, multiple tone detection (including busy, fast busy, SIT), Caller ID detection and display, and Flash Hook. The Dual UTA HD FXO is fully user configurable and allows any type of connection and multiple stage dialing (including immediate connect for PBX systems). For more details, please visit Dual UTA HD.

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Main Features

VQuad™ w/ Dual UTA HD in Analog interface

• Two Analog FXO ports per Dual UTA HD (RJ-11 interface)
• Manual or Automatic operation of traffic generation and full call control
• Round Trip Delay and One Way Delay measurements as well as Echo Measurements
• Supports all standard and customized call progress tones
• Detect user-defined Dial Tone, Ring Back, Busy, Fast Busy, SIT
• Send Digits during established call for two-stage dialing and IVR menu systems
• Both USA and European standards supported (FCC and TBR-21 certified)
• Remote Access for starting/stopping the tests along with retrieving results
• GL VQT Automatic Mode supports automatic execution of the VQT algorithms (PESQ, POLQA)
• Additional measurements include Clipping, Jitter, Latency, Noise and Signal Levels
• Results available in real-time or post-processing
• Each analog port may be controlled independently for traffic and call control
• Fax Testing using the Dual UTA HD 2-wire FXO or 4-wire analog interfaces. Supports up to 4 simultaneous T.30 faxes

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2-Wire Analog WB FXO Testing

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4-wire WB Analog Testing

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24-Port VQuad™ HD Analog Phone Simulator

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Voice Quality Testing (VQT)

GL's VQT may be executed automatically (real-time and/or post-processing) or manually by entering a Reference File and Degraded File. Regardless of how GL's VQT is initiated, algorithms for POLQA, PESQ MOS and PESQ LQ are executed simultaneously for the two voice files and results are shown in graphically as well as in tabular format. GL’s VQT supports POLQA WB Analysis (ITU-P.863). GL's VQT also displays cumulative statistics for large scale testing over long periods of time.

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