“Software-based SIP endpoint for active VoIP and VoLTE quality testing.”

What is VPP?

VoxPort Packet (VPP) is a software SIP endpoint designed for active testing and measurement of VoIP and VoLTE services within IP networks.
As a core component of the MultiDSLA platform, VPP enables operators, integrators, and vendors to generate and analyze real voice calls, measure speech quality with POLQA®/PESQ®, and even simulate network impairments for resilience testing.

Key Features

• Voice Quality Metrics
  ▫️Objective MOS scoring using POLQA® and PESQ®.
  ▫️Support for narrowband, wideband, and super-wideband codecs (AMR-NB/WB, EVS, Opus).
• Active VoIP/VoLTE Testing
  ▫️SIP and raw RTP call support.
  ▫️Encode/transmit speech samples, decode and analyze received streams.
• Packet Impairment Simulation
  ▫️Define precise patterns of delay, jitter, or packet loss.
  ▫️Reproduce real-world conditions by importing overlays from live captures.
• Codec Management
  ▫️Manage codec switching and rate adaptation.
  ▫️Overlay tools for Codec Mode Requests (CMR) synchronized with speech transmissions.
• Network KPIs
  ▫️Measure packet loss, jitter, and SIP message timing.
  ▫️Identify codec or network-related performance issues.
• MultiDSLA Integration
  ▫️Centralized configuration, orchestration, results collection, and reporting.
  ▫️Combine with DSLA (hardware) and OSS (smartphone-based) agents for end-to-end QoE analysis.

Benefits for the Client

• End-to-end realism – test VoIP/VoLTE services with actual SIP endpoints.
  
• Deep QoE insight – beyond MOS, capture KPIs and root cause indicators.
  
• Flexible impairment testing – reproduce degradations to assess resilience.
  
• Versatile codec coverage – validate next-gen services including EVS and Opus.
  
• Efficient integration – part of the MultiDSLA ecosystem for lab and live environments.

Why VPP is Different ?

• Software-based scalability – deployable across distributed test networks.
  
• Advanced impairment overlays – unique simulation of jitter, loss, or codec shifts.
  
• Codec-rich testing – from legacy to 5G-ready codecs (EVS).
  
• Centralized supervision – fully integrated with MultiDSLA controller and reporting.
  
• Trusted reference tool – widely used by operators and test labs worldwide.

Typical Use Cases

• Lab testing of VoIP/VoLTE implementations under controlled conditions.
• Continuous network monitoring of SIP-based services.
• Validation of EVS codec deployments in mobile networks.
• MCPTT/MCx service quality testing.
• Drive testing with packet impairment simulation.

Services & Support (What We Offer)

• VoIP/VoLTE Assessment – baseline analysis of SIP-based services.
  
• Deployment Services – integrate VPP into lab and operator environments.
  
• Overlay Workshops – simulate impairments with custom overlays.
  
• Optimization Services – codec tuning, KPI thresholds, and reporting.
  
• Managed Testing Services – VPP-enabled active testing delivered as-a-service.

“Automated active testing with real Android devices.”

What is OSS?

The Opale Smartphone Supervisor (OSS) is an Android-based software agent that automates mobile call placement and service testing while collecting wireless environment metrics (cellular and Wi-Fi).
Designed for Android 8 (Oreo) and above, OSS integrates with Opale’s MultiDSLA platform to provide a comprehensive end-user perspective of network quality, combining voice quality analysis (MOS, POLQA, PESQ) with real-time wireless context.

OSS empowers operators, integrators, and test labs to run large-scale, automated assessments of mobile QoE, making it essential for validating and monitoring mobile networks.

Key Features

• Automated Call Placement
  ▫️Initiates and controls mobile voice calls without manual intervention.
• Wireless Metrics Collection
  ▫️Captures Wi-Fi and cellular KPIs such as signal strength, handovers, throughput.
• Real-Time Data Provisioning
  ▫️Provides live network environment data to the MultiDSLA platform during tests.
• Audio & Video Recording
  ▫️Records test sessions for playback, post-analysis, and QoE validation.
• MultiDSLA Integration
  ▫️Centralized control, test orchestration, results collection, and advanced reporting.
  ▫️OSS agents complement hardware (DSLA) and software (VPP) nodes for flexible testing.

Benefits for the Client

• Automated, scalable testing – eliminate manual device handling.
  • Accurate QoE validation – combine MOS scoring with wireless context.
  • Cross-environment coverage – test in the lab, in the field, or during drive campaigns.
  • Real device realism – evaluate services on the same Android phones used by subscribers.
  • Integration with voice quality platforms – seamless with MultiDSLA for deep voice analysis.

 Why OSS is Different ?

• Real smartphone-based – not an emulator; uses actual devices for end-to-end accuracy.
  
• Integration with MultiDSLA – unique link between service quality and environment data.
  
• Multi-service testing – voice, video, messaging, data, and OTT apps.
  
• Flexible deployment – lab validation, live monitoring, or drive testing.
  
• Trusted telecom-grade tool – used by operators, regulators, and vendors worldwide.

 Typical Use Cases

• Voice quality testing in the lab – automate call campaigns across Android devices.
  
• Voice network monitoring – continuous QoE validation in live networks.
  
• Mission-Critical Push-To-Talk (MCPTT/MCx) testing – validate public safety communications.
  
• Drive testing – assess mobile service quality with GPS-synchronized campaigns.

Services & Support (What We Offer)

• Mobile QoE Assessment – baseline analysis of voice and data services.
  
• Deployment Services – integrate OSS agents into operator test environments.
  
• Automation Workshops – design scripts and scheduling for large test campaigns.
  
• Optimization Services – fine-tune thresholds, reporting, and drive test setups.

“State-of-the-art voice quality testing and performance assessment.”

What is MultiDSLA?

MultiDSLA is Opale Systems’ flagship voice quality test system, widely recognized as the reference measurement platform for QoS and QoE validation in telecom networks.
It enables operators, equipment vendors, and test labs to assess voice service quality across fixed, mobile, and IP networks, from development to live operations.

By combining objective MOS scores (PESQ®, POLQA®) with advanced analytics, MultiDSLA not only measures end-user experience, but also helps identify the root causes of degradations.

Key Features

• Comprehensive Voice Quality Metrics
  ▫️ITU-T PESQ® and POLQA® MOS scoring.
  ▫️Speech & noise levels, echo, codec distortion, jitter buffer performance.
  ▫️Call setup analysis, VAD performance, DTMF integrity.
• Flexible Node Architecture
  ▫️Connects via analog ports, SIP/RTP (VoIP), mobile handsets, Bluetooth, or OSS smartphone nodes.
  ▫️Supports 100+ distributed nodes controlled from a central controller.
• Smart Automation
  ▫️Tasklist editor allows fine-grained automation (play, control, trigger events).
  ▫️Schedule or run tests on demand with graphical network representation.
• Field & Lab Testing
  ▫️Supports drive testing with GPS synchronization.
  ▫️Post-process mapping data into Google Earth for coverage visualization.
• Streaming Integrity & EVS Ready
  ▫️Detects audio break/distortion in Bluetooth/Wi-Fi voice streaming (e.g. Amazon Echo, car audio).
  ▫️Fully supports EVS codec validation for next-generation voice services.
• Open API Integration
  ▫️REST API and Python modules.
  ▫️Easy integration into CI/CD pipelines or quality test automation platforms.

Benefits for the Client

• End-to-end validation – measure from POTS to SIP, mobile-to-mobile, or VoIP-to-analog.
  
• Accurate QoE analysis – objective MOS scores + root cause indicators.
  
• High scalability – control over 100 nodes in parallel tests.
  
• Operational efficiency – automate repetitive tests for regression or SLA monitoring.
  
• Future-proof – ready for EVS and advanced voice streaming applications.

Why MultiDSLA is Different ?

• Reference-grade accuracy – trusted by operators, vendors, and regulators worldwide.
  
• Versatile node types – support for analog, SIP, mobile, Bluetooth, and app-based endpoints.
  
• Granular root cause analysis – beyond MOS, detailed KPIs to troubleshoot degradations.
  
• Field and lab coverage – one system usable for R&D, QA, and live monitoring.
  
• Proven automation – integrates seamlessly into test frameworks via open APIs.

Typical Use Cases

• Lab validation of new VoIP, VoLTE, and EVS codec implementations.
• Field testing and drive campaigns for mobile voice quality.
• Continuous monitoring of live networks for SLA compliance.
• Troubleshooting echo, distortion, or dropped calls in fixed or mobile services.
• Functional testing of residential gateways, softphones, and smart audio devices.

Services & Support (What We Offer)

• Voice Quality Assessment – baseline QoS/QoE analysis across networks.
  
• Deployment Services – integrate MultiDSLA nodes into lab or operator infrastructures.
  
• API Workshops – enable automation within CI/CD or operator test environments.
  
• Optimization Services – fine-tune KPIs, thresholds, and reporting.

“Offline bulk voice and audio quality analysis with industry-standard algorithms.”

What is MetricServer?

MetricServer is Opale Systems’ voice and audio quality analysis platform, designed to process large volumes of speech files through industry-standard algorithms such as POLQA®, PESQ, VISQOOL, and PEAQ.
It provides Mean Opinion Score (MOS) and detailed QoE indicators, enabling service providers, integrators, and mobile carriers to monitor and troubleshoot voice and audio performance in telecom networks and test environments.

MetricServer integrates seamlessly with proprietary test systems via a Python-based API, making it a scalable and flexible tool for automated QoE validation and codec troubleshooting.

Key Features

• Standards-Based Analysis
  o Supports ITU algorithms: POLQA®, PESQ for speech, PEAQ for audio, VISQOOL for perceptual quality, DTMF integrity.
• Comprehensive QoE Metrics
  o MOS, latency, percentage of speech loss, speech/noise levels.
  o Frame-by-frame analysis for pinpointing artifacts and degradations.
• Speech Performance Analysis (SPA)
  o Unique feature providing waveform-level troubleshooting.
  o Identifies codec issues, time offsets, and speech loss causes.
• Scalability
  o Processes 50,000+ speech files per day.
  o Optimized for large-scale regression testing or operator-grade QoE monitoring.
• Flexible Integration
  o Python API for automation in proprietary systems.
  o Web user interface for direct analysis and reporting.

Benefits for the Client

• Ensure service quality – monitor and validate VoIP, VoLTE, and 5G voice performance.
  
• Troubleshoot codec problems – identify exact causes of poor MOS scores.
  
• Automate testing workflows – seamless integration into CI/CD or operator test systems.
  
• Scale efficiently – analyze tens of thousands of samples daily.
  
• Enhance user experience – provide accurate QoE metrics for optimization and SLA compliance.

Why MetricServer is Different

• Exclusive SPA feature – deep frame-by-frame troubleshooting unmatched by standard MOS tools.
  
• Multi-standard support – covers both voice and music quality metrics.
  
• Platform-independent integration – Python API for easy adoption.
  
• Carrier-grade scalability – designed for operators and large test labs.
  
• True end-user perspective – analysis reflects real perceived quality.

Typical Use Cases

• Post-processing QoE analysis of degraded speech files captured during field or lab tests.
• Automated MOS validation for VoIP/VoLTE services.
• Codec performance benchmarking under different network conditions.
• SLA and regulatory reporting for telecom operators.
• Troubleshooting voice quality in mobile and fixed networks.

Services & Support (What We Offer)

• QoE Assessment – evaluate voice and audio quality in networks or labs.
  
• Deployment Services – integrate MetricServer into operator or vendor test environments.
  
• API Workshops – customize Python scripts for automated workflows.
  
• Optimization Services – configure thresholds and regression analysis.
  
• Managed QoE Analysis – deliver MetricServer insights as-a-service.