Key Features include

  • ITU Standards including:
    • PESQ ITU P. 862)
    • ECHO (ITU G.131)
    • SIGNAL (ITU-T P.50)

  • Call Scenarios includes:
    • VoIP to VoIP
    • VoIP to PSTN
    • PSTN to VoIP
    • PSTN to PSTN


VoIP Quality Monitoring

ISP-I for VoIP provides continuous, real-time visibility of the health and status of the Key elements of your IP Telephony infrastructure and MOS-based quality reports of test voice calls from a single reporting interface. The platform provides monitoring and reporting across any call-path (IP, TDM, Mobile/Wireless, Voice over WiMAX) or mix of PBX or IP-PBX platforms and provides a real-time consolidated view into the QoS/performance of all call-types applicable in your environment.

Epitiro now offers a fully-automated and managed VoIP Quality test, reporting & benchmarking system and supports a wide variety of call scenarions including:

  • VoIP (SIP) to VoIP (SIP)
  • VoIP to PSTN
  • VoIP to Mobile (GSM, CDMA, WIMAX, LTE)
  • VoIP to Femtocell/Picocell
  • VoIP to Windows Live Media (Unified Communications)

Active testing agents provide on-going link quality and performance measurements for VoIP services by intitiating calls between agents & pre-defined termination points anywhere inside or outside the network. These automated test schedules are an important component of real proactive monitoring and testing, as they enable benchmarking of voice service quality, and detect degradation before end users do. The reporting module provides availability and voice quality (MOS / PESQ) measurements on every test call session. All data is reported and available in real-time through the online ISP-I portal:

VoIP Network Reporting Measurements:

SIP Reporting
  • SIP/PSTN Statistics
  • Dial Tone Delay
  • Ring Duration
  • Post Dial Delay
  • Call Setup Time
  • Call Duration
  • Call Disposition Codes
Call Performance
  • Call Performance
  • Call completion ratio (excluding BUSY signals)
  • Call loss ratio
Speech Transmission - PESQ (ITU standard P.862)
  • VoIP Speech Transmission
  • PESQ LQ MOS
  • Speech Activity
  • Speech Power
  • Loss
  • C-message noise
  • Wideband noise
Echo Detection (ITU G.131)
  • Echo Return Loss (ERL); echo attenuation in dB
  • ERLs and echo delays for multiple echoes
  • Perceptual estimation of echo annoyance, using subjective analysis results as stated in ITU-T G.131
  • Additional measurement outputs for comprehensive analysis
  • Narrowband and Wideband operation
  • Real speech signals for analysis
Network Statistics
  • RTP / Network Stats
  • Jitter
  • Packet Loss
  • Latency
  • Throughput

ISP-I for Voice will objectively determine voice quality from the all-important subscriber perspective. The system uses standards-based Perceptual Evaluation of Speech Quality (PESQ ITU P.862) to provide an automated, MOS-based objective voice quality score. The VoIP module can objectively determine voice quality from the subscriber's perspective. Agents use a standards-based Perceptual Evaluation of Speech Quality (PESQ ITU P.862) to provide an automated, MOS-based objective voice quality score.

VoIP Module Features and Benefits:

  • Real-time, Non-Intrusive, Active testing & reporting
  • Understand what your customers are experiencing in real-time from multiple locations
  • Powerful and flexible report generation, including Web browser access to all reports - Complete and flexible access to network knowledge.
  • Trend Testing - Profile the behavior of your network with continuous long term testing at different times of the day, week, or month.
  • VoIP stream quality measurements without relying on network equipment
  • Detailed analysis of each call includes PESQ ratings, signaling and voice latency
  • 'At a glance' insight of your competitors strengths and weaknesses
  • Multiple levels of drill-down detail right down to a single VoIP test
  • Remote-control and real-time availability reporting of all agents
  • Distributed high performance test agents easily managed & coordinated by centralized Operations Management server
  • Mean-Opinion-Score (MOS) Rating & E-Model Integration
  • Measures speech quality in industry-standard terms of end-user perception using a scale from 1 (worst) to 5 (best).
  • MOS score is calculated according to P.862
  • PESQ-LQ gives a quality score on a MOS-like scale
  • P.862.1 is the ITU-T standard mapping for PESQ to MOS-like scale
  • PESQ-Ie is the impairment factor, Ie, which is an input to the E-model