Q-Master Voice System

QoE Systems ’ Q-Master System measurers the speech quality aspects of communication devices or channels. Q-Master uses perceptual analysis capabilities as defined by ITU-T P.862. The result of the measurement is a MOS (Mean Opinion Score); to interpret end-to-end quality of speech. Developers and operators can assess the correct functioning of networks (both telephony and LAN/WAN) and/or devices such as codecs, echo-cancellers, transcoders, gateways, telephones, voice activity detectors, etc., using the Q-Master System.

The Q-Master System includes dedicated hardware with a variety of available network and device interfaces. It facilitates the sending and receiving of signals over POTS (FXO and FSX), Analog Line, PSTN (T1 and E1), Phone Handset, Mobile Handset and Ethernet VoIP channels.

In addition to an overall MOS score, the Q-Master can measure within such parameters as; MOS speech only; MOS background only; time delay, MOS vs. Time and many additional measurements. The Q-Master GUI graphically represents all of these measurements.

The Q-Master GUI operates in a Windows environment, where the user interface provides a simple yet full featured test process environment that allows quick and comprehensive quality assessment measurements. The measurement results can be stored, reviewed, printed and exported.

The Q-Master can be deployed both locally as well as remotely connecting with Ethernet/LAN for control.

Features
• Measure quality with ITU standardized perceptual algorithm
• End-to-end verification of quality in IP, PSTN and Wireless services
• Easy-to-use, Windows-based user interface
• Graphical presentation of all measurements
• Local and/or remote multipoint deployment supported

Measure quality with ITU standardized perceptual algorithm
Speech quality assessment is done using the PESQ algorithm (ITU P.862). This measurement not only provides an overall MOS score identifying the quality, but also detailed performance analysis of other useful parameters and graphical representations including MOS speech only, MOS background only, time delay, MOS vs Time, Spectrum view of signal, Voice Activity Detection, Front End Clipping, Drop outs, Holdover time.

End-to-end verification of quality in IP, PSTN and Wireless services
The Q-Master product facilitates the sending and receiving of signals over PSTN, Analog Audio, VoIP channels. This allows developers and operators to assess the correct functioning of networks and/or devices such as codecs, echo-cancellers, transcoders, gateways, telephones, voice activity detectors.

Easy-to-use, Windows-based user interface
A Windows based user interface provides a simple yet full-featured test environment allowing fast and comprehensive quality assessment measurements.

Graphical presentation of all measurements

Local and/or remote multipoint deployment supported
Q-Master can be deployed both locally as well as remotely connecting by means of LAN for control. Multiple Q-Masters can be networked for measurements between locations as desired. All measurements results are stored and can be reviewed or included in reports at a later date.