MultiDSLA Controller


Audio voice quality test system for voice engineers and support teams

Voice Quality Of Experience

Delivers true audio voice quality as perceived by the human ear

Standards Based Analysis

Accurate & Repeatable measurements based on international standards (PESQ, POLQA®).

Test Design Flexibility

Automation engine enables you to create any test you need. Your imagination is your only limit.

Smart Analytics

Full drill-down and detailed graphical analysis help resolve problems quickly

Seamless Integration

Delivers true and objective Voice quality perceived by end users

Plan Ahead

Stress your Service ahead of the big conference. Predict failure before you customers & users

Scalable Architecture

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

MultiDSLA Controller

MultiDSLA Controller

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.

Analog & Cellular Nodes

Analog & Cellular Nodes

Voip & Volte Nodes

Voip & Volte Nodes

ISDN and TDM 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.

Configure a system for your test application – VoIP service to analogue PBX, mobile to PRI, soft phone to POTS, BRI to Bluetooth, and so on.


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

Management Reports

SLA Management. Setup your Pass/Fail criteria on any KPI. Monitor your one-way delay, jitter, MOS, echo, speech levels…

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.

Speech Recognition

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

EVS Ready

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
Memory 2 GB
Network Interface Windows Server 2012 R2, Windows Server 2016, Windows 7 Professional SP1, or Windows 10 Professional
Screen Resolution 1024 x 768 pixels


Specification MultiDSLA Controller
#Nodes supported 100’s (depending on number of simultaneous tests required)
Controller Seats
(Add’l User Interface Application)
MS SQL Database Can reside within MultiDSLA Controller PC or on an independent server

Measurement Summary

Specification MultiDSLA Controller
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


Celebrating 20 Years of Excellence

Two decades of passionately working side-by-side with telecom leaders & business enterprises.
See how Teraquant can improve your business communications today!