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Voice, Video & Data Quality Testing
Across All Networks (VQuad™ - Dual UTA)

VQuad™ Software Ver 8.2 | VQT Software Ver 6.4 | WebViewer™ Software Ver 5.0  | Download Now!


The VQuad™ software is used to automatically send and record voice, video, and data traffic from four different types of network (Quad refers to 4 network types: Wireless, VoIP, TDM, & Analog). The VQuad™ uses a universal adapter such as Dual Universal Telephone Adapter (Dual UTA), Dual UTA HD, or VQuad™ Probe that provides multiple interfaces for connecting to any communication device on a network. The VQuad™ with any of the above hardware allows to test variety of networks, including Wireless (Bluetooth®, Wi-fi, 3G, 4G, LTE, PTT), VoIP, Analog, and TDM, practically allowing any end-point interfaces to be tested for voice, data, and video quality.

A single VQuad™ software supports up to 6 Dual UTAs, which means up to 12 telephony devices and/or 12 SIP User Agents in VoIP network can be controlled within a VQuad™. A minimum of two telephony interface types are supported per Dual UTA and all devices in Dual UTA may be configured together on a single PC. VQuad™ supports both Dual UTA HD (v.2) and Dual UTA (v.1, v.2) connected to same system and run tests simultaneously.

Dual UTA HD (High Density) includes support for Bluetooth® Wideband, FXO Wideband and SIP Wideband (ex: AMR WB), with which you can easily interface with any Mobile Device, FXO, or SIP devices supporting HD Voice.

Various associated applications (Voice Quality, Video Quality, Data tests, Echo and Delay tests, Fax tests, Voice Band Analysis) works with VQuad™ to provide "end-to-end assessment" with additional test and measuring capabilities. All the applications work in conjunction with the VQuad™ for automatically and remotely analysing the captured data and sending the test results to the central database. VQuad™ scripting allows for automated call control, and traffic simulation to conduct tests on Wireless, IP, PSTN and TDM networks.  Different types of traffic supported includes - NB and HD Voice, Video, Tones, DTMF/MF Digits, Fax, and other Data (HTTTP, UDP, TCP, SMS, Email, DNS, Route, FTP, ….).

With WebViewer™, the results can be queried and displayed on a remote client PC using web based browsers. Customized consolidated view of the VQuad™, call control and test results along with the graphical report can be generated. The status of each node in the network can be monitored. The Results, VQuad™ Nodes, and the Devices can be plotted in the WebViewer™ Google Maps using the GPS co-ordinates saved in the database. The output results can be exported to txt, xls, or pdf files.

Main Features

Single box portable solution, for QoS Testing



  • On any PC including Rack/Tower, Laptop, Netbook, and Tablet.

  • Support for up-to 6 Dual UTA units (i.e., 12 telephony devices connected simultaneously.

  • Supports up to 12 SIP UAs in VoIP interface (does not require any hardware)

  • Works with DUAL UTA,  Dual UTA HD, or VQuad™ Probe 

  • VQuad™ Probe is a self-contained unit that includes VQuad™, Dual UTA and PC

  • Supports both Dual UTA HD (v.2) and Dual UTA (v.1, v.2) connected to same VQuad™ system.

  • Supported on Windows® 7 and higher (32-bit, 64-bit) operating systems

  • Most of the communications within VQuad™ solution supports IPv6.


Automation through Scripting

  • Complete automation with enhanced scripting and remote operation including traffic generation, call control, and automated scheduling of operations

  • Local VQuad™ can control remote VQuad™ systems to expand testing for an entire network. 

  • Various commands are available for Call Control, Dual UTA device operations, File Transfer, Traffic Generation/Detection, VQT, Data Testing, Central Database Connections, and Remote VQuad operations

  • Call type identifier to report the type of Network (3G, 4G, LTE, PSTN, VoIP) on both the sides of the call

  • All results and events are automatically transferred to a Central Database

  • CLI support to access various functionalities remotely


Remote Control and Monitoring using web based WebViewer™

  • Remote monitoring with result query and real-time statistics

  • Real-time status of entire network with ability to remotely access and control any node within network

  • Support for primary and secondary Central Database IP addresses for backup and redundancy.

  • Customization of result view and statistics graphs

  • Remote control of VQuad™, File Monitor, VQT, and Command Center nodes

  • Console view of NetTest and VQuad results and statistics graphics

  • VQuad™ results, events, node status, and devices can be plotted on google map within WebViewer™ with the user-defined co-ordinates (absence of GPS receiver connectivity)


File Monitor Utility

  • Transfers all the degraded files to analysis system.

  • Supports connections to multiple nodes to handle network fail-overs.

  • VQuad™ also reports File Monitor status to WebViewer™ using which the utility status can be monitored


Dual UTA HD Hardware Unit

GL offers next generation Dual UTA HD hardware unit, which supports all the interfaces and telephony devices as that of Dual UTA unit in a smaller (compact) design, with most of the interfaces on front of the board.

Additionally, the Dual UTA HD (v.2) includes support for testing HD voice using Bluetooth® Wideband, and FXO Wideband along with hardware loopback controlled through the VQuad™ software (including self-test mechanisms). Dual UTA HD hardware also includes a new optimal PTT interface, Self-Test LED, GPS connect LED, enhanced flexibility added to the VQuad™ Script, and full IPV6 support.

For more details, please visit Dual UTA HD webpage.

Dual UTA

Dual UTA Hardware Unit

The Dual UTA features all the circuitry necessary to universally adapt to any telephony instrumentation, such as

  • Mobile audio interface for Smartphones
  • Bluetooth™® (NB and WB)
  • RJ-11 POTS interface 
  • Handset interface  (POTS, Digital, VoIP)
  • Balanced I/O (VoIP, HATS,...)
  • GPS sync port

A GPS sync port on the Dual UTA permits precise time synchronization between two geographically separated systems as well as location information for drive testing.  

Dual UTA is a low power USB device that has been fully tested even with an ultra-portable Dual Core NetBook (no external power required). GL’s VQuad™ with Dual UTA purchased along with the NetBook PC can be conveniently packaged as a portable test unit for field testing. This allows both the VQuad™ and VQT to reside and operate simultaneously on the same NetBook. Up to two Dual UTAs can be supported in a single NetBook (thus allowing a maximum of 4 simultaneous devices). Full support is also available for remote access of the VQuad™ and an SDK directly to the Dual UTA hardware (VQuad™ not required to be running).

NetBook a portable platform for VQuad™ with Dual UTA

VQuad™ Probe – A Self-Contained Unit with VQuad™, Dual UTA, and PC

GL's VQuad™ Probe is an all-in-one self-contained VQuad™ with Dual UTA test instrument. The VQuad™ Probe(combines with VQuad™-Dual UTA-PC into one single box) provides multiple interfaces for connecting to any communication device on a network using an efficient, portable, single box solution. This comprehensive hardware device incorporates all the features of the current VQuad™ with Dual UTA unit such as portability and remote accessibility along with the necessary PC hardware with Windows® OS.

VQuad™ with Dual UTA (VQuad™, Dual UTA, and PC)

The VQuad™ Probe can work with variety of networks, including Wireless (Bluetooth®, Wi-fi, 3G, 4G, LTE, PTT), VoIP, Analog, and TDM. The VQuad™ probe can be controlled via Ethernet Remote Desktop (with support for mouse/keyboard) and is of same length as the current Dual UTA hardware, but about twice as high and 50% wider.

With additional licensing (VQT274) VQuad™ probe can connect to a portable 10” Touchscreen Monitor via USB interface. For more details, please visit VQuad™ Probe webpage.

Dual UTA – 1U Rack Unit

GL's High Density VQuad™ is a 1U rack unit, which includes Dual UTA PTT/Audio interface and PC interfaces. VQuad™ is capable of generating TTL triggers based on PTT activation.

GL’s VQuad™ can automatically key PTT from the CWP, then transmit and receive audio signals for Voice Quality Assessment and precise delay testing. Delay testing and verification is going to be particularly important with the transition to IP, which will introduce packetization delays as well as jitter buffer delays and other uncertainties.

Dual UTA – 1U Rack Unit

Below is a list of the key features associated with it:

  • 4-Wire Balanced Audio and PTT Contact Closure Interface for connecting to the CWP Dual Jack Module as well as other 4-wire interfaces within the network 
  • Provides 4 types of TTL output - PTT Enable, PTT Disable, Audio Trigger - Start of Audio, & Audio Detect
  • Precise One-Way Delay (OWD) measurements as well as event-based TTL or CMOS trigger outputs that can feed an oscilloscope or other discrete signal loggers
  • Voice Quality Assessment using industry-standard ITU algorithms (PESQ, PAMS, PSQM & POLQA)
  • 4-Wire “Bridge” Mode –  To monitor existing TMG’s and provide event-based trigger outputs (for latency testing)
  • Test Automation Capabilities - GUI-based or SDK and CLI versions

24-Port WB FXO Test Solution (using 2U HD VQuad™ System)

VQuad™ 24 Port HD Unit

Features High-Density WB Solution
VQuad™ 24 Port HD
Space Considerations 2U multi-VQuad system with total 12 Dual UTA HD units
Ports 24 Analog FXO ports accessed via 50 Pin Amphenol connector
FXO Audio NB and WB (HD) Audio Supported
Operation Fully Independent FXO Ports with full control between VQuad systems
Bulk Call  Fully Supported via VQuad Scripting
Remote Control Fully Supported via CLI, API or WebViewer
Traffic Voice, Digits, Tones, Fax
Voice Quality POLQA (including NB and WB), and PESQ


VQuad™ can also work with handheld analog tester – vHandi™ to automate voice quality testing on analog lines. vHandi™ is a very compact handheld tester, perfect for field testing designed to simulate an FXO device.

Network Types

Automated Testing of Mobile Radio and Wireless Devices

4G LTE, VoLTE, 3G, 2G, WiFi, WiMax, Bluetooth™ ®

Wireless networks can impair voice quality by various means including poor mobile phone quality, voice/video compression and decompression algorithms, delay, loss or gain in speech levels, noise, acoustic and landline echo, and other distortions.

GL provides a compact and portable solution for testing Wireless and Mobile Radio devices for voice, video, and data quality using the GL VQuad™ application with the Dual UTA, or all-in-one VQuad™ Probe.

Some of the important features include:

  • Test mobile end-to-end voice, video, and data, quality measurement and analysis results
  • Mobile Phone call control – supports Bluetooth®,  2.5mm Audio Headset Jack interfaces, and 3.5mm terminations for Smartphones (iPhone, Android)
  • Support for voice quality testing on VoLTE network with AMR Wideband codec (with 16000 Sampling Rate) using Bluetooth® Wideband
  • Control Mobile Radios with Push-to-Talk functionality; Supports radio keying and send/record audio
  • Bluetooth® also performs RSSI, Battery level functions, and Network identity
  • Impair outgoing traffic using a noise file or user-defined white noise
  • All results along with call control information are sent to central database. Query results remotely using the WebViewer™.
  • Compatible with automated GPS location time-stamping

Some of these applications include

    • Voice Quality Testing (VQT) software for analysis according to widely accepted ITU (International Telecommunications Union) voice comparison algorithms (POLQA, PESQ LQ/LQO/WB)
    • Data Quality Testing (NetTest™)application for performing automated data testing on a wireless or wired network; tests include TCP, UDP, VoIP, Route, HTTP, FTP, DNS, SMS, Email, SIMInfo, Phone Info, and UEInfo
    • Video Quality Testing (VAC™) application for performing fully automated Video Conference testing and get Audio and Video MOS QoS results along with several analytical metrics
    • Echo Measurement Utility (EMU) for echo and delay measurements, including RTD, OWD, ERL, EPD, and more
    • Voice-band Analyzer (VBA) for monitoring voice band traffic (Speech Level, Activity Factor, RMS Factor, DC Level, Noise Level, Jitter, Echo Return Loss, Echo Delay, and Echo Dispersion)
    • Fax Quality Testing for emulation and analysis of T.30 faxes (GLInsight™ or FaxScan™)
    • Drive Testing solution for plotting all results and call control information along with co-ordinates using GPS receiver option in VQuad™, and Google Maps option within WebViewer™
    • WebViewer™ for web based controlling and monitoring VQuad™ nodes over the entire network 

Automated Testing of 2-Wire Analog interface (PSTN, ATA, Media Gateway)

GL's VQuad™ with Dual UTA provides 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.

GL’s VQuad™ application can also work with vHandi™ - an handheld analog line tester to perform centralized voice quality measurements and analysis. GL’s vHandi™ is a compact portable hand-held FXO simulator (Foreign Exchange Office) that can simulate an analog phone. The vHandi™ call and voice tests can be completely automated or manually performed. Both solutions 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.

  • Two Analog FXO ports per Dual UTA (RJ-11 interface).
  • Single FXO port per vHandi™ Handheld (RJ-11 interface)
  • Next generation Dual UTA HD includes support for FXO WB
  • Manual or Automatic operation of traffic generation and full call control
  • Each analog port may be controlled independently for traffic and call control
  • Supports all standard and customized call progress tones
  • Send/detect DTMF /MF digits, and tones of different frequencies (NB – up to 4 KHz, WB – up to 8KHz, SWB – up to 24 KHz)
  • Support for No Call Control (Quick Connect) on FXO interface 
  • Call control with Caller ID detection and display
  • Impair outgoing traffic using a noise file or user-defined white noise
  • Remote Access for starting/stopping the tests along with retrieving results.
  • All results along with call control information are sent to central database. Query results remotely using the WebViewer™.
  • Additional functionalities –

Automated Testing of VoIP (SIP) Interface, Digital VoIP Phones, VoIP Softphones

With the growing requirements for voice quality testing within VoIP networks, a major concern is testing the VoIP Network, VoIP phones, VoIP Softphones, and Analog Telephone Adaptors (ATA).

GL's VQuad™ with VoIP option, provides the ability to perform manual or automated tests on Softphones in the VoIP network.

The VQuad™ provides direct connection to the VoIP network with up to eight user agents per VQuad™ connected simultaneously. VQuad™ with Dual UTA provides the ability to test ATA’s while connected to the VoIP Network.


Automated Testing of TDM T1/E1 Interface (CAS/PRI ISDN) using T1/E1 Analyzer

Voice quality is essential for all networks as well as Gateways and Switches. The VQuad™ with TDM option includes the T1/E1 Analysis cards (PCI or PCIe) or Portable USB based T1 E1 Analyzer units for a truly portable solution.  This system provides the mechanism for signal and voice quality testing over T1/E1 trunks.

Using the T1/E1 Analyzer, the VQuad™ can generate and receive up to 12 simultaneous CAS or PRI ISDN or No Call Control (NOCC) calls on T1 or E1 trunks. Once the call is up, send/record voice via the VQuad™ to get VQT MOS results.

The T1/E1 option includes a script based CAS State Machine for creating any desired CAS protocol. Included with the PRI ISDN are all variants associated with ANSI and ETSI specifications.

  • Supports Call Control for PRI ISDN and CAS Protocols
  • Also supports No Call Control (NOCC), where the T1/E1 call is connected without any call control required.
  • Send/detect DTMF /MF digits, and tones of different frequencies (NB – up to 4 KHz, WB – up to 8KHz, SWB – up to 24 KHz)
  • Supports up to 12 simultaneous T1/E1 channels using VQuad™ interface
  • Impair outgoing traffic using a noise file or user-defined white noise
  • Additional functionalities –

Test Types

Delay Measurements

OWD - End points at same location

OWD - End points at separate location

  • One Way Delay (OWD) - VQuad™ includes an advanced method for performing One Way Delay (OWD) measurements using a Correlator algorithm. The Correlator method is extremely accurate and works on the older generation Dual UTA as well as the next generation Dual UTA HD.
  • Round Trip Delay (RTD) – the new method of measuring RTD using the Correlator algorithm supported on Dual UTA HD (Coming soon)
  • Post Dial Delay (PDD)
  • Signal-to-Noise Ratio (SNR = S/N)
  • Oscilloscope and Spectral Display
  • RMS Power as well as C-Message 
  • Audio analysis of any recorded voice file for both Power and Frequency. RMS power and frequency response outputs are necessary for testing the network for full WB voice support.

Audio Analysis

OWD using Correlator

Echo Measurements

Echo Identification

Acoustic Echo Canceller Testing

  • Supports echo measurements over any network using EMU
  • Assess sidetone, line, and acoustic echo and the corresponding delays.

Voice Band Analysis

  • Monitor voice band traffic
  • Measure Active Speech Level, Activity Factor, RMS Factor, DC Level, Noise Level, Echo Return Loss, Echo Delay, and Echo Dispersion statistics.

Automated Voice Quality Testing

End points at same location

End points at different location

  • Network-independent VQT – Supports legacy, as well as Next Generation networks
  • POLQA (ITU-T P.863)
  • PESQ (ITU-T P.862), PESQ LQ, LQO (P.862.1), PESQ WB (P.862.2)
  • PAMS (ITU-T P.800)
  • PSQM/PSQM+ (ITU-T P.861)
  • Call control analysis (Failed Calls, Dropped Calls, and Call ID)
  • Monitoring IVR System for voice and data quality
  • Supports PESQ/POLQA (both NB and WB) measurements
  • Supports Narrow band and Wideband audio (both 8k and 16k samples/sec) 
  • Auto detects voice files with wideband attributes
  • All VoIP Codec supported including - G.711, G.711 App II with VAD, G.729, G.726, G.726 with VAD, GSM, AMR NB and WB, EVRC, SMV, iLBC, SPEEX NB and WB, G.722, and G722.1.
  • Visit Voice Codecs webpage for more comprehensive information.

Automated Data Quality Testing

VQuad™ is enhanced to support Data Testing including TCP, UDP, VoIP, Route, HTTP, FTP, DNS, SMS, Email, PhoneInfo, SimInfo, and UEInfo. The Data Tests are configured via the VQuad™ scripting and supports Wireless devices as well as PC Ethernet connections (wired, WiFi, Broadband 3G/4G, and LTE).

  • Network independent, supports 4G LTE, 3G, WiMax, and Wired Internet connections
  • Supports Mobile devices (i.e. iPhone, Android)
  • Supports PC Ethernet connection (Wired, Wi-Fi, Broadband (3G or 4G))
  • Different type of tests supported – TCP, UDP, HTTP, FTP, DNS, VoIP, Route, SMS, Email, PhoneInfo, SimInfo, and UEInfo.
  • End-to-End SMS Testing over wireless network directly and remotely
  • Remotely perform Data tests from GLNetTestApp on mobile devices (iPhone, Android); this requires connection with Mobile Device Controller server. Mobile device communicates with Mobile Device Controller from anywhere in the world.
  • Fully automated and remote testing with all results accessible via WebViewer™.

Automated Video Quality Testing

VQuad™ can now initiate, control, test, and measure video conferencing services over IP, and Wireless networks, using additional support of a Video Controller/Server and Video Clients (Agents).
Video Tests can be configured between any two active video clients with flexibility of specifying the typical characteristics of the Video test.   Video Test agents generates simulated video calls to other test agents as per these test parameters.

  • Fully automated Video Conference testing performed with QoS results provided along with several analytical metrics
  • Support for Android, PC and Linux based video clients (end points) for active Video Quality Testing
  • Both manual and automated tests are supported
  • Tests can be run directly from the Android phone or using the VQuad™ interface
  • Configure unlimited test plans; video test parameters include Codec, Bandwidth, Latency, Frame Rate, GoP (Group of Pictures) Structure, Echo, and Resolution
  • Test results include Video MOS, Audio MOS, and A/V MOS along with a variety of analytical and quality metrics
  • Fully automated and remote testing with all results accessible via WebViewer™.

Drive Testing for Wireless Networks

  • Drive test with any Wireless device with real-time GPS mapping
  • GPS connectivity for recording timing and location of tests performed
  • The GPS mapping records and adds the real-time GPS information to all test results and VQuad™ call control.
  • GPS Location includes stamping each result with Latitude, Longitude, and GPS Time Stamp
  • The Indoor Tracking System (ITS) in VQuad™ is developed to support VQT in remote locations where GPS signal is unavailable
  • The ITS information (location, timestamp) is saved to the database per VQuad™ Measurement
  • GPS information is automatically sent to central database and accessed via Google Maps feature in WebViewer™.

Automated Fax Quality Testing

  • Supports Fax testing (sending and receiving) up to 4 independent and simultaneous T.30 faxes over 2-Wire, and 4-wire analog networks
  • Support higher resolution and multi-page fax TIF files
  • Tx and Rx fax rate from 2400 baud to 33600 baud with V.34 fully supported.
  • Interfaces supported for fax generation include 2-wire FXO and 4-wire analog.
  • Automatically save the fax session (both East and West directions) to a PCM file.
  • Supports higher resolution and multi-page fax TIF files.
  • Use GLInsight™ or GL Fax Scan analysis software packages for further analysis of the recorded fax files. GL's FaxScan™ can be configured for fully automated analysis.

Automated IVR Testing

  • Simulate IVR Users and IVR System
  • Single-box portable solution and Rackmount PC solution for higher density
  • Complete automation with enhanced scripting and remote operation including traffic generation and call control scripting
  • Automate the IVR testing process - call establishment and traffic generation detection process through scripts
  • Monitoring IVR System for voice and data quality
  • Perform Quality of Service (PESQ) or path confirmation tests
  • Within a proper voice call, additional analysis is available such as Round Trip Delay (RTD) and Voice Quality Testing (VQT)
  • Support for Command Line Interface (CLI) to access VQuad™ remotely

WB Bluetooth Testing

The VQuad™ with Dual UTA HD units can connect to any network or any end-equipment supporting HD (WB) audio on all interfaces. The Dual UTA HD includes interfaces for 2-wire analog FXO, 4-wire analog (Tx/Rx), Push-to-Talk for mobile radios, and Bluetooth for connecting to any mobile phone.

With the Dual UTA HD Bluetooth® option, the Dual UTA HD act as a Bluetooth® Headset and connects to the mobile phone to perform voice quality analysis along with delay measurements on Bluetooth® enabled mobile devices.

Test Bluetooth® Enabled Mobile Devices and Associated Network

As a new feature of the Dual UTA HD Bluetooth® option, and using special firmware, the Dual UTA HD can act as the Mobile Device and connect to any Bluetooth® headset to perform ‘Voice Quality Tests’ on the Bluetooth® Headsets. In other words, isolate the Bluetooth® headset for voice quality analysis.

This is extremely important for testing Bluetooth® headsets, Bluetooth® in the car, and pretty much any Bluetooth® device which connects to a mobile phone for voice. The Dual UTA HD connects to the Bluetooth® headset and allows voice quality analysis along with delay measurements. Both narrowband and wideband codecs are supported.

Test Bluetooth® Devices (Headsets, Car Stereo Kit …)

  • Mobile (3G, VoLTE, VoWiFi, VoFemto, 5G) network with both NB and WB voice
  • Mobile Phone call control – supports Bluetooth® 2.5mm Audio Headset Jack interfaces, and 3.5mm terminations for Smartphones (iPhone, Android)
  • Support for voice quality testing on VoLTE network with AMR Wideband codec (with 16000 Sampling Rate) using Bluetooth® Wideband
  • Control Mobile Radios with Push-to-Talk functionality; Supports radio keying and send/record audio
  • Bluetooth® also performs RSSI, Battery level functions, and Network identity

VQuad™ with Dual UTA HD – WB 2-wire Analog FXO

  • Connect to any PSTN, ATA, and next generation Gateways
  • Global support – can connect to any 2-wire interface anywhere
  • Supports 2 independent FXO ports per Dual UTA HD
  • Wide Band (WB) and Narrow Band (NB) support (for HD and SD Audio)
  • Full FXO Functionality via flexible Scripts

24-Port VQuad™ HD Analog Phone Simulator

VQuad™ 24-port HD FXO solution is an all-in-one 2U rack supporting both Wide Band (WB) and Narrow Band (NB) Audio. The 2U VQuad™ HD FXO system incorporates two embedded SBCs (Single Board Computer), each running latest VQuad™ software, along with 12 Dual UTA HD units supporting a total 24 FXO Analog ports. All 24 FXO ports are independent and can be fully automated or remote controlled for a fully autonomous test solution. Access to the 24 Analog ports is via an Amphenol connector on the back of the system which can be broken out to 24 RJ11 connections. Each embedded SBC includes two Gigabit Ethernet connections, two USB connections, and a VGA monitor connection. LED lights on the front of the 2U Rack display status of each SBC along with each Dual UTA HD.

Multiple VQuad 24-Port FXO Racks can be connected together for virtually unlimited FXO ports. When combined with the WebViewer Central System all results and events can be saved directly to a Central Database and accessed using the WebViewer (direct access to the database tables is also available). Analysis is provided using GL Voice Quality Analysis (both POLQA and PESQ supported), Echo Measurement Utility (EMU), Fax Analysis, and Voice Band Analyzer (VBA).

  • Supports 24 independent HD FXO ports per VQuad™ system (2U)
  • Scalable solution for unlimited number of FXO ports
  • Wide Band (WB) and Narrow Band (NB) support (for HD and SD Audio)
  • Multiple Users and Tests per system
  • Run tests between systems
  • Fully automated and remote accessible via CLI
  • Remote accessible via Central Database
  • Full FXO Functionality and Analysis via flexible Scripts

VQuad™ 24 Port HD connected to
Third-party DUT

VQuad™ 24 Port HD Unit

Supported FXO Functions and Analysis

Basic telephony functions
Detect ringing signal
Flash Hook

FXO Call Progress and Services
Call Progress tones
Busy tone
Call waiting tone
Dial tone
Reorder tone
Ring-back tone
Special dial tone
Test tone
Loop current drop 
All Supplementary Services

FSK related functions
Call ID Detection
Voice Mail Message Indicator (VWMI)
Call Waiting with Call ID

Audio Analysis

Voice Quality using POLQA/PESQ
Audio Path Confirmation
Prompt Recognition
IVR Support
HD Network Verification
FAX Analysis

Send/Record Voice
Send/Receive Fax
Send/Detect Single /Dual Frequency Tones
Send/Detect DTMF/MF digits

VQuad™ with Dual UTA HD – WB 4-wire Analog

  • Balanced – replaces headset (mic/speaker) anywhere
  • RJ22 – replaces the phone Handset on any phone at the Curly Cord
  • PTT (Push to Talk) – connect to any mobile radio (DoD, Emergency Services, Government) and supports voice and keying the radio
  • Mobile – connect to any mobile phone, the phone will recognize the Dual UTA as a headset.

VQuad™– WB VoIP

  • VQuad™ can be configured to support up to 12 VoIP SIP User Agents
  • Testing Analog Telephone Adapters (ATAs)
  • Supports outband DTMF/MF digits for RFC4733 and RFC2833.
  • Impair outgoing traffic using a noise file or user-defined white noise
  • Supports almost all standard Voice Codecs (PCMU, PCMA, G726_40, G726_32, G726_24, G726_16, GSM, G729, and Wideband HD audio codecs).

    For more information to

Command Line Interface (CLI) for Remote Access

The VQuad™ Command Line Interface (CLI) is designed to remotely access various application functionalities and thus controlling VQuad™ nodes located at various destinations. The supporting commands helps the VQuad™ users to run the application installed on remote PC. All Call Control functions, and traffic simulation functions are supported. These includes - Load Call Control Script Configuration, Load VQuad™ Master Configuration, Start Stop Call Control Script, Place Call, Answer Call, Disconnect Call, Set and Get Log Files., and many other operations. It also supports traffic functions such as Send and Record Voice Files, Transmit and Detect Digits, Stop Detect Digits, Send and Detect Tones, Stop Detect Tones, and Stop Traffic.


Buyer's Guide

Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX can either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), UTA or UEA (USB Units), HUT or HUE (Universal Cards), and HDT or HDE (HD cards) depending upon the hardware.

Item No. Description
  VQuad™ Network Options
VQT010 VQuad™ Software (Stand Alone)
VQT241 Dual Universal Telephony Adapter (UTA)
VQT251 Dual UTA HD Next generation Dual UTA with FXO Wideband support
VQT270 VQuad™ Probe
VQT280 VQuad Probe with Dual UTA HD
Item No.  Related Software
VQT013 VQuad™ with SIP (VoIP) Call Control
VQT015 VQuad™ with T1 E1 Call Control
VQT011 Dual UTA - Software Development Kit (SDK)
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
VQT204 GPS for Dual UTA
VQT601 Mobile Device Controller (MDC) Software
VQT600 VQuad™ NetTest Data Server Solution
VQT610 Target Data Server


VAC (includes VAC Server and VAC companion software)
VAC Windows/Linux Agent, single license, 5Mbps
VAC Windows/Linux Agent, single license, 10Mbps
VAC Windows/Linux Agent, single license, 50Mbps
VAC Android Agent, single license, 5Mbps

VQuad™ Fax Emulation (2 simultaneous ports)
VQuad™ Fax Emulation (8 simultaneous ports)
VBA038 FaxScan™ for PCM
PKV104 FaxScan™ for SIP and Fax over IP (T.38)
VQT030 Network Command Center (Multi-Node Command and Control Center for VQuad™ Systems)
VQT442 (cable) Mobile Audio Interface for Smartphones
VQT443 (cable) 3-wire headset interface Adaptor for Smartphones
VQT274 VQuad™ Probe Touchscreen Monitor
VQT002 Voice Quality Testing (PESQ only)
VQT006 VQT w/ POLQA Server License
VBA032 Near Real-time Voice-band Analyzer
EMU037 Echo Measurement Utility (EMU) Software
VQT040 WebViewer™
VQT290 vHandi™ - Handheld Analog Line Tester


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