Voice Quality Of Experience
Delivers true audio voice quality as perceived by the human ear
Standards Based Analysis
Test Design Flexibility
Automation engine enables you to create any test you need. Your imagination is your only limit.
Full drill-down and detailed graphical analysis help resolve problems quickly
Delivers true and objective Voice quality perceived by end users
Stress your Service ahead of the big conference. Predict failure before you customers & users
Scalable Architecture makes it usable from the product Lab environment to Enterprise Network Operations
capture all influences on your voice quality scores
MultiDSLA is the most accurate measurement system for Voice Quality Testing and voice End-User Experience Assessment and accordingly is used by most leading voice/UC organisations worldwide as the reference measurement for applications ranging from mobile to edge technology development to network operations.
In addition to objective and standards-based voice quality scores such as PESQ, POLQA & audio MOS, MultiDSLA offers smart analytics and key performance indicators to help you identify the root cause of distortions in the degraded voice signal
• Network impairments : one-way delay, packet loss, jitter buffer behaviour and echo,
• Speech & Noise level,
• Codec distortion,
• Voice activity detector (VAD) performance,
• Call setup analysis,
• DTMF sequences,
• And many more!
most versatile voice quality test solution
The MultiDSLA Controller centrally automates call set up and measurements between any MultiDSLA Nodes in your voice network. Tests occur according to a pre-defined schedule or on demand with a simple to use graphical representation of the network.
MultiDSLA offers unrivaled ease of use and can perform the most complex test processes, controlling 100+ Nodes.
ISDN and TDM Nodes
The MultiDSLA Nodes are capable of generating voice signals at any level, and measure the key performance indicators configurable via the controller. Any selection of node types can be configured. The user interface is consistent and the test process remains identical, regardless of which node types are being used, making the system easy to learn, easy to use and supremely flexible.
Flexible Automation Engine
Unparalleled granularity of single tasks to be automated.
Tasklist editor enables you to play, control, wait or trigger any event at will.
Full ETSI tests for
First Responder Apps & Networks
the only system to fully test PTT metrics such as Floor Access Time
Field Test with Outdoor Maps
Test multiple “Fixed line to Mobile” or “Mobile to Mobile” communications simultaneously. GPS localization and synchronisation. Post process mapping data into Google Earth.
Suitable for functional Automated testing of IVR routing plus Speech-To-Text libraries & SDK’s
100% Open API
APPIUM, TCL, Perl, Python, libraries support with wrappers including “on-deck” mobile control. Allows integration with any quality test automation software
Test EVS on your network, chipset, or device and validate new performance obtained.
Voice & Audio Streaming Integrity
The unique way to assess your performance of audio streaming over Bluetooth or Wi-Fi. Detects and records any break or distortion over any test period. Specially designed for voice control systems (Amazon® EchoTM), car audio systems, or cordless loudspeakers
MultiDSLA Host PC
|Minimum Recommended Specs||MultiDSLA Controller|
|CPU||Intel Core i5 processor or equivalent|
|Network Interface||Windows Server 2012 R2, Windows Server 2016, Windows 7 Professional SP1, or Windows 10 Professional|
|Screen Resolution||1024 x 768 pixels|
|#Nodes supported||100’s (depending on number of simultaneous tests required)|
(Add’l User Interface Application)
|MS SQL Database||Can reside within MultiDSLA Controller PC or on an independent server|
|Scores||POLQA Version 3, PESQ, E-Model, PEAQ with graphical analytics|
|Supported Measurement ITU Standards||• ITU-T Rec. P.56: Mean Active Speech Level
• ITU-T Rec. P862, P862.1, P862.2: PESQ
• ITU-T Rec. P863: POLQA
• ITU-R BS. 1387 : PEAQ
• ITU-T Rec. G.107 E-Model
|Signal Levels||Mean Active, Peak, and RMS speech levels|
|Delay||Mean Active, Peak, and RMS speech levels|
|Echo||• Up to three echos, level, loss, delay (analog domain)
• Simulation of echo signal and delay for echo cancellation performance assessment